UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549


                                    FORM 10-Q


         / x /   QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d)
                     OF THE SECURITIES EXCHANGE ACT OF 1934
                For the quarterly period ended September 30, 2006

                                       or

         /   /  TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d)
                     OF THE SECURITIES EXCHANGE ACT OF 1934
               For the transition period from _______ to ________


                         Commission File Number: 1-13245

                       PIONEER NATURAL RESOURCES COMPANY
             ------------------------------------------------------
             (Exact name of Registrant as specified in its charter)

                    Delaware                                   75-2702753
        -------------------------------                   ------------------
        (State or other jurisdiction of                    (I.R.S. Employer
        incorporation or organization)                    Identification No.)

 5205 N. O'Connor Blvd., Suite 200, Irving, Texas                75039
 ------------------------------------------------              ---------
     (Address of principal executive offices)                  (Zip Code)

                                 (972) 444-9001
              ----------------------------------------------------
              (Registrant's telephone number, including area code)

                                 Not applicable
              ----------------------------------------------------
              (Former name, former address and former fiscal year,
                          if changed since last report)

Indicate by check mark whether the Registrant (1) has filed all reports required
to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during
the  preceding 12 months (or for such  shorter  period that the  Registrant  was
required  to file  such  reports),  and  (2) has  been  subject  to such  filing
requirements for the past 90 days.

                                Yes / x / No / /

Indicate by check mark whether the registrant is a large  accelerated  filer, an
accelerated  filer, or a  non-accelerated  filer. See definition of "accelerated
filer and large  accelerated  filer" in Rule 12b-2 of the Exchange  Act.  (Check
one):

Large accelerated filer /x/   Accelerated filer / /   Non-accelerated filer / /

Indicate by check mark whether the registrant is a shell company  (as defined in
Rule 12b-2 of the Exchange Act).

                                Yes / / No / x /

Number of shares of Common Stock outstanding as of
  October 30, 2006................................................. 122,617,054






                        PIONEER NATURAL RESOURCES COMPANY

                                TABLE OF CONTENTS

                                                                        Page

Cautionary Statement Concerning Forward-Looking Statements.............   2

Definitions of Certain Terms and Conventions Used Herein...............   3

                          PART I. FINANCIAL INFORMATION

Item 1.   Financial Statements

          Consolidated Balance Sheets as of September 30, 2006
            and December 31, 2005......................................   4

          Consolidated Statements of Operations for the three and
            nine months ended September 30, 2006 and 2005..............   6

          Consolidated Statement of Stockholders' Equity for the
            nine months ended September 30, 2006.......................   7

          Consolidated Statements of Cash Flows for the three and
            nine months ended September 30, 2006 and 2005..............   8

          Consolidated Statements of Comprehensive Income for the
            three and nine months ended September 30, 2006 and 2005....   9

          Notes to Consolidated Financial Statements...................  10

Item 2.   Management's Discussion and Analysis of Financial
          Condition and Results of Operations..........................  35

Item 3.   Quantitative and Qualitative Disclosures About Market Risk...  51

Item 4.   Controls and Procedures......................................  53

                           PART II. OTHER INFORMATION

Item 1.   Legal Proceedings............................................  54

Item 1A.  Risk Factors.................................................  54

Item 2.   Unregistered Sales of Equity Securities and Use of Proceeds..  55

Item 6.   Exhibits.....................................................  55

Signatures.............................................................  56

Exhibit Index..........................................................  57

Cautionary Statement Concerning Forward-Looking Statements

     The  information  in this  Quarterly  Report on Form  10-Q  (the  "Report")
contains forward-looking  statements that involve risks and uncertainties.  When
used in this document, the words "believes," "plans," "expects,"  "anticipates,"
"intends,"  "continue," "may," "will," "could," "should," "future," "potential,"
"estimate," or the negative of such terms and similar expressions as they relate
to Pioneer Natural Resources  Company  ("Pioneer" or the "Company") are intended
to identify forward-looking statements. The forward-looking statements are based
on the Company's current  expectations,  assumptions,  estimates and projections
about the Company and the industry in which the Company  operates.  Although the
Company  believes  that  the  expectations  and  assumptions  reflected  in  the
forward-looking statements are reasonable,  they involve risks and uncertainties
that are difficult to predict and, in many cases,  beyond the Company's control.
Accordingly,  no assurances can be given that the actual events and results will
not be  materially  different  than the  anticipated  results  described  in the
forward-looking  statements.  See "Part I, Item 3.  Quantitative and Qualitative
Disclosures  About  Market  Risk" and "Part II, Item 1A.  Risk  Factors" in this
Report and "Item 1. Business -- Competition, Markets and Regulations", "Item 1A.
Risk  Factors" and "Item 7A.  Quantitative  and  Qualitative  Disclosures  About
Market Risk" in the Company's  Annual  Report on Form 10-K for a description  of
various factors that could  materially  affect the ability of Pioneer to achieve
the anticipated results described in the forward-looking statements. The Company
undertakes  no duty to publicly  update these  statements  except as required by
law.

                                       2





            Definitions of Certain Terms and Conventions Used Herein


Within this report, the following terms and conventions have specific meanings:

o    "Bbl" means a standard barrel containing 42 United States gallons.
o    "Bcf" means billion cubic feet.
o    "BOE" means a barrel of oil equivalent and is a standard convention used to
     express oil and gas  volumes on a  comparable  oil  equivalent  basis.  Gas
     equivalents  are  determined  under the relative  energy  content method by
     using the ratio of 6.0 Mcf of gas to 1.0 Bbl of oil or natural gas liquid.
o    "BOEPD" means BOE per day.
o    "Btu"  means  British  thermal  unit,  which is a measure  of the amount of
     energy  required to raise the  temperature of one pound of water one degree
     Fahrenheit.
o    "LIBOR"  means London  Interbank  Offered  Rate,  which is a market rate of
     interest.
o    "Mcf" means one thousand cubic feet and is a measure of natural gas volume.
o    "MMBbl" means one million Bbls.
o    "MMBOE" means one million BOEs.
o    "MMBtu" means one million Btus.
o    "MMcfpd" means one million cubic feet per day.
o    "NGL" means natural gas liquid.
o    "NYMEX" means the New York Mercantile Exchange.
o    "proved  reserves" mean the estimated  quantities of crude oil, natural gas
     and natural gas liquids which  geological and engineering  data demonstrate
     with  reasonable  certainty  to be  recoverable  in future years from known
     reservoirs under existing economic and operating  conditions,  i.e., prices
     and costs as of the date the estimate is made. Prices include consideration
     of changes in existing  prices  provided only by contractual  arrangements,
     but not on escalations based upon future conditions.
               (i) Reservoirs are considered proved if economic producibility is
     supported  by either actual production  or conclusive  formation test.  The
     area of a reservoir considered proved includes  (A) that portion delineated
     by drilling and defined  by gas-oil and/or  oil-water contacts, if any; and
     (B) the immediately  adjoining portions  not yet drilled,  but which can be
     reasonably  judged as  economically  productive  on the basis of  available
     geological and  engineering data.  In the  absence of  information on fluid
     contacts, the lowest known  structural occurrence of  hydrocarbons controls
     the lower proved limit of the reservoir.
                (ii)  Reserves  which  can  be  produced  economically   through
     application of improved  recovery techniques  (such as fluid injection) are
     included in the "proved" classification  when successful testing by a pilot
     project,  or  the  operation  of an  installed  program  in the  reservoir,
     provides  support  for the  engineering  analysis  on  which the project or
     program was based.
                (iii) Estimates of proved reserves do not include the following:
     (A) oil that  may become available  from known reservoirs but is classified
     separately as "indicated additional reserves";  (B) crude oil,  natural gas
     and natural  gas liquids,  the recovery  of which is subject  to reasonable
     doubt  because of  uncertainty as to geology,  reservoir characteristics or
     economic factors; (C) crude oil, natural gas and  natural gas liquids, that
     may  occur in  undrilled  prospects;  and (D)  crude oil,  natural  gas and
     natural gas liquids, that may be recovered from oil shales, coal, gilsonite
     and other such sources.
o    "SEC" means the United States Securities and Exchange Commission.
o    With  respect to  information  on the working  interest in wells,  drilling
     locations  and  acreage,  "net"  wells,  drilling  locations  and acres are
     determined by multiplying  "gross" wells,  drilling  locations and acres by
     the Company's working interest in such wells,  drilling locations or acres.
     Unless  otherwise   specified,   wells,   drilling  locations  and  acreage
     statistics  quoted  herein  represent  gross wells,  drilling  locations or
     acres.
o    Unless  otherwise  indicated,  all currency  amounts are  expressed in U.S.
     dollars.


                                       3





                          PART I. FINANCIAL INFORMATION


Item 1.     Financial Statements

                        PIONEER NATURAL RESOURCES COMPANY

                           CONSOLIDATED BALANCE SHEETS
                                 (in thousands)



                                                                     September 30,     December 31,
                                                                         2006              2005
                                                                     -------------     ------------
                                                                     (Unaudited)

                                                     ASSETS
                                                                                 
Current assets:
   Cash and cash equivalents.......................................  $   100,072       $    18,802
   Accounts receivable:
     Trade, net of allowance for doubtful accounts of $8,905 and
       $5,736 as of September 30, 2006 and December 31,
       2005, respectively..........................................      160,031           336,062
     Due from affiliates...........................................        1,445             1,596
   Inventories.....................................................      109,509            79,659
   Prepaid expenses................................................       16,497            18,091
   Deferred income taxes...........................................       82,638           158,878
   Other current assets:
     Derivatives...................................................       38,286             1,246
     Other, net of allowance for doubtful accounts of none as of
       September 30, 2006 and $6,425 as of December 31, 2005.......        9,677             9,470
                                                                     -----------       -----------
          Total current assets.....................................      518,155           623,804
                                                                     -----------       -----------
Property, plant and equipment, at cost:
   Oil and gas properties, using the successful efforts method
    of accounting:
     Proved properties.............................................    7,570,614         8,499,253
     Unproved properties...........................................      201,740           313,881
   Accumulated depletion, depreciation and amortization               (1,816,875)       (2,577,946)
                                                                     -----------       -----------
          Total property, plant and equipment......................    5,955,479         6,235,188
                                                                     -----------       -----------
Goodwill...........................................................      310,626           311,651
Other property and equipment, net..................................      107,456            90,010
Other assets:
   Derivatives.....................................................       12,954             1,048
   Other, net of allowance for doubtful accounts of $92 as of
     September 30, 2006 and December 31, 2005......................       93,615            67,533
                                                                     -----------       -----------
                                                                     $ 6,998,285       $ 7,329,234
                                                                     ===========       ===========


The financial information included as of September 30, 2006 has been prepared by
     management without audit by independent registered public accountants.

              The accompanying notes are an integral part of these
                       consolidated financial statements.

                                       4





                        PIONEER NATURAL RESOURCES COMPANY

                     CONSOLIDATED BALANCE SHEETS (Continued)
                        (in thousands, except share data)




                                                                     September 30,     December 31,
                                                                         2006              2005
                                                                     -------------     ------------
                                                                     (Unaudited)
                      LIABILITIES AND STOCKHOLDERS' EQUITY

                                                                                 
Current liabilities:
   Accounts payable:
     Trade.........................................................  $   320,612       $   330,151
     Due to affiliates.............................................       12,863            15,053
   Interest payable................................................       26,032            40,314
   Income taxes payable............................................       34,397            22,470
   Other current liabilities:
     Derivatives...................................................      147,617           320,098
     Deferred revenue..............................................      183,031           190,327
     Other.........................................................      153,935           114,942
                                                                      ----------       -----------
          Total current liabilities................................      878,487         1,033,355
                                                                      ----------       -----------
Long-term debt.....................................................    1,194,556         2,058,412
Derivatives........................................................      166,757           431,543
Deferred income taxes..............................................    1,105,118           767,329
Deferred revenue...................................................      528,576           664,511
Other liabilities and minority interests...........................      155,457           156,982
Stockholders' equity:
   Common stock, $.01 par value; 500,000,000 shares authorized;
     145,572,290 and 145,200,293 share issued as of
     September 30, 2006 and December 31, 2005, respectively........        1,456             1,452
   Additional paid-in capital......................................    3,698,204         3,775,812
   Treasury stock, at cost: 23,644,151 and 18,368,109 shares as
     of September 30, 2006 and December 31, 2005, respectively.....   (1,074,577)         (882,382)
   Deferred compensation...........................................            -           (45,827)
   Retained earnings (accumulated deficit).........................      478,345          (184,320)
   Accumulated other comprehensive income (loss):
     Net deferred hedge losses, net of tax.........................     (203,373)         (506,636)
     Cumulative translation adjustment.............................       69,279            59,003
                                                                      ----------       -----------
         Total stockholders' equity................................   2,969,334          2,217,102
Commitments and contingencies......................................
                                                                      ----------       -----------
                                                                     $ 6,998,285       $ 7,329,234
                                                                      ==========       ===========




The financial information included as of September 30, 2006 has been prepared by
     management without audit by independent registered public accountants.

              The accompanying notes are an integral part of these
                       consolidated financial statements.

                                       5





                        PIONEER NATURAL RESOURCES COMPANY

                      CONSOLIDATED STATEMENTS OF OPERATIONS
                      (in thousands, except per share data)
                                   (Unaudited)




                                                            Three months ended            Nine months ended
                                                               September 30,                September 30,
                                                         -----------------------      ---------------------------
                                                            2006          2005            2006            2005
                                                         ---------     ---------      -----------     -----------
                                                                                          
Revenues and other income:
  Oil and gas........................................    $ 418,106     $ 389,679      $ 1,205,144     $ 1,033,842
  Interest and other.................................       15,229         7,885           42,081          21,936
  Gain (loss) on disposition of assets, net..........         (708)          375           (4,184)          2,625
                                                         ---------     ---------      -----------     -----------
                                                           432,627       397,939        1,243,041       1,058,403
                                                         ---------     ---------      -----------     -----------
Costs and expenses:
  Oil and gas production.............................      102,969        92,809          300,718         253,393
  Depletion, depreciation and amortization...........       95,288        75,836          265,678         215,143
  Impairment of long-lived assets....................            -            21                -             644
  Exploration and abandonments.......................       43,820        56,364          210,080         147,691
  General and administrative.........................       30,421        29,817           92,136          83,901
  Accretion of discount on asset retirement
     obligations.....................................        1,168         1,094            3,470           3,183
  Interest...........................................       23,586        28,862           82,928          91,011
  Other..............................................       14,779        34,185           31,592          58,739
                                                         ---------     ---------      -----------     -----------
                                                           312,031       318,988          986,602         853,705
                                                         ---------     ---------      -----------     -----------
Income from continuing operations before
  income taxes.......................................      120,596        78,951          256,439         204,698
Income tax provision.................................      (40,270)      (17,438)        (111,194)        (93,234)
                                                         ---------     ---------      -----------     -----------

Income from continuing operations....................       80,326        61,513          145,245         111,464
Income from discontinued operations, net of tax......          473        62,060          566,800         282,325
                                                         ---------     ---------      -----------     -----------
Net income...........................................    $  80,799     $ 123,573      $   712,045     $   393,789
                                                         =========     =========      ===========     ===========
Basic earnings per share:
  Income from continuing operations..................    $     .65           .45      $     1.15      $       .79
  Income from discontinued operations, net of tax....           -            .45            4.52             2.01
                                                         ---------     ---------      ----------      -----------
  Net income.........................................    $     .65     $     .90      $     5.67      $      2.80
                                                         =========     =========      ==========      ===========
Diluted earnings per share:
  Income from continuing operations..................    $     .64     $     .44      $     1.14      $       .79
  Income from discontinued operations, net of tax....           -            .44            4.39             1.95
                                                         ---------     ---------      ----------      -----------
  Net income                                             $     .64     $     .88      $     5.53      $      2.74
                                                         =========     =========      ==========      ===========
Weighted average shares outstanding:
  Basic..............................................      124,021       137,655          125,520         140,436
                                                         =========     =========      ===========     ===========
  Diluted............................................      126,734       141,786          129,134         144,770
                                                         =========     =========      ===========     ===========
Dividends declared per share.........................    $     .13    $      .12      $       .25     $       .22
                                                         =========    ==========      ===========     ===========



         The financial information included herein has been prepared by
     management without audit by independent registered public accountants.

              The accompanying notes are an integral part of these
                       consolidated financial statements.

                                       6





                        PIONEER NATURAL RESOURCES COMPANY

                 CONSOLIDATED STATEMENT OF STOCKHOLDERS' EQUITY
                                 (in thousands)
                                   (Unaudited)



                                                                                               Accumulated Other
                                                                                           Comprehensive Income (Loss)
                                                                                           ---------------------------
                                                                                                  Net
                                                                                   Retained    Deferred
                                           Additional                              Earnings     Hedge     Cumulative      Total
                                   Common   Paid-in     Treasury      Deferred   (Accumulated   Losses,   Translation  Stockholders'
                                   Stock    Capital       Stock     Compensation   Deficit)   Net of Tax  Adjustment     Equity
                                   ------  ----------  -----------  ------------ -----------  ----------- -----------  ------------
                                                                                               
Balance as of January 1, 2006....  $1,452  $3,775,812  $  (882,382)  $  (45,827)  $(184,320)  $ (506,636)   $ 59,003   $ 2,217,102
  Dividends declared ($.25 per
    share).......................       -           -            -            -     (31,899)           -           -       (31,899)
  Conversion of senior notes.....       -     (62,672)      78,731            -           -            -           -        16,059
  Exercise of long-term incentive
    plan stock options...........       -       2,651       26,723            -     (17,481)           -           -        11,893
Purchase of treasury stock.......       -           -     (297,649)           -           -            -           -      (297,649)
Tax benefits related to
  stock-based compensation.......       -       2,887            -            -           -            -           -         2,887
Compensation costs:
  Adoption of SFAS 123(R)........       -     (45,827)           -       45,827           -            -           -             -
  Compensation awards............       4          (4)           -            -           -            -           -             -
  Compensation costs included in
    net income...................       -      25,357            -            -           -            -           -        25,357
Net income.......................       -           -            -            -     712,045            -           -       712,045
Other comprehensive income:
  Deferred hedging activity,
   net of tax:
    Net deferred hedge gains.....       -           -            -            -           -      105,315           -       105,315
    Net hedge losses included in
     continuing operations.......       -           -            -            -           -       71,676           -        71,676
   Net hedge losses included in
     discontinued operations.....       -           -            -            -           -      126,272           -       126,272
  Translation adjustment.........       -           -            -            -           -            -      10,276        10,276
                                   ------  ----------  -----------   ----------   ---------   ----------    --------   -----------

Balance as of September 30, 2006.  $1,456  $3,698,204  $(1,074,577)  $        -   $ 478,345   $ (203,373)   $ 69,279   $ 2,969,334
                                   ======  ==========  ===========   ==========   =========   ==========    ========   ===========


         The financial information included herein has been prepared by
     management without audit by independent registered public accountants.

              The accompanying notes are an integral part of these
                       consolidated financial statements.

                                       7






                        PIONEER NATURAL RESOURCES COMPANY

                      CONSOLIDATED STATEMENTS OF CASH FLOWS
                                 (in thousands)
                                   (Unaudited)




                                                                  Three months ended             Nine months ended
                                                                     September 30,                  September 30,
                                                              -------------------------     ---------------------------
                                                                 2006           2005            2006            2005
                                                              ----------     ----------     -----------     -----------
                                                                                                
Cash flows from operating activities:
  Net income...............................................   $   80,799     $  123,573     $   712,045     $   393,789
  Adjustments to reconcile net income to net cash provided
    by operating activities:
     Depletion, depreciation and amortization..............       95,288         75,836         265,678         215,143
     Impairment of long-lived assets.......................            -             21               -             644
     Exploration expenses, including dry holes.............       15,981         38,609         127,917          67,571
     Deferred income taxes.................................       43,336          4,383         110,520          60,759
     Loss (gain) on disposition of assts, net..............          708           (375)          4,184          (2,625)
     Loss on extinguishment of debt........................            -         18,633           8,076          25,975
     Accretion of discount on asset retirement obligations.        1,168          1,094           3,470           3,183
     Discontinued operations...............................       (3,248)        78,804        (543,903)        262,876
     Interest expense......................................        2,357          1,493           7,522           2,555
     Commodity hedge related activity......................       (3,867)         1,658          (9,420)         (9,069)
     Stock-based compensation..............................        7,047          6,449          25,357          19,619
     Amortization of deferred revenue......................      (47,396)       (21,882)       (143,231)        (53,956)
     Other noncash items...................................        4,494          4,059          14,018           9,758
  Changes in operating assets and liabilities, net of
   effects from acquisition:
     Accounts receivable, net..............................       (1,351)         9,047         161,814         (45,255)
     Inventories...........................................      (12,988)        (8,964)        (52,113)        (21,667)
     Prepaid expenses......................................       (1,673)       (13,513)            291          (7,705)
     Other current assets, net.............................       (7,214)           405           1,978            (124)
     Accounts payable......................................       80,005         27,730         (33,636)         37,294
     Interest payable......................................       (1,202)       (21,593)        (11,476)        (25,957)
     Income taxes payable..................................      (37,995)        (6,314)         17,820           5,605
     Other current liabilities.............................      (31,551)        (9,350)        (22,624)        (15,039)
                                                              ----------     ----------     -----------     -----------
       Net cash provided by operating activities...........      182,698        309,803         644,287         923,374
                                                              ----------     ----------     -----------     -----------
Cash flows from investing activities:
  Payments for acquisition, net of cash acquired...........            -              -               -            (965)
  Proceeds from disposition of assets......................         (354)        63,598       1,642,208       1,184,196
  Additions to oil and gas properties......................     (342,236)      (406,241)       (986,668)       (846,924)
  Additions to other assets and other property and
    equipment, net.........................................      (24,589)       (14,337)        (57,428)        (34,059)
                                                              ----------     ----------     -----------     -----------
       Net cash provided by (used in) investing activities.     (367,179)      (356,980)        598,112         302,248
                                                              ----------     ----------     -----------     -----------
Cash flows from financing activities:
  Borrowings under long-term debt..........................      200,000        599,700       1,098,490         976,112
  Principal payments on long-term debt.....................     (256,744)       (66,967)     (1,959,586)     (1,440,649)
  Payment of other liabilities.............................         (560)       (18,462)         (1,190)        (32,437)
  Exercise of long-term incentive plan stock options.......        7,227         12,736          11,893          40,170
  Purchase of treasury stock...............................     (125,204)      (472,580)       (297,649)       (698,804)
  Tax benefits related to stock-based compensation.........        2,887              -           2,887               -
  Payment of financing fees................................           (9)        (1,811)         (2,178)         (1,811)
  Dividends paid...........................................            -              -         (15,510)        (14,332)
                                                              ----------     ----------     -----------     -----------
       Net cash provided by (used in) financing activities.     (172,403)        52,616      (1,162,843)     (1,171,751)
                                                              ----------     ----------     -----------     -----------
Net increase (decrease) in cash and cash equivalents.......     (356,884)         5,439          79,556          53,871
Effect of exchange rate changes on cash and cash
  equivalents..............................................          (86)           618           1,714           3,380
Cash and cash equivalents, beginning of period.............      457,042         58,451          18,802           7,257
                                                              ----------     ----------     -----------     -----------
Cash and cash equivalents, end of period...................   $  100,072     $   64,508     $   100,072     $    64,508
                                                              ==========     ==========     ===========     ===========


         The financial information included herein has been prepared by
     management without audit by independent registered public accountants.

              The accompanying notes are an integral part of these
                       consolidated financial statements.

                                       8






                        PIONEER NATURAL RESOURCES COMPANY

             CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS)
                                 (in thousands)
                                   (Unaudited)





                                                            Three months ended            Nine months ended
                                                               September 30,                September 30,
                                                        -------------------------     --------------------------
                                                           2006           2005            2006            2005
                                                        ----------     ----------     -----------     ----------

                                                                                          
Net income.........................................     $   80,799     $  123,573     $   712,045     $  393,789
                                                        ----------     ----------     -----------     ----------
Other comprehensive income (loss):
  Deferred hedging activity, net of tax:
     Net deferred hedge gains (losses).............         68,367       (286,200)        105,315       (629,000)
     Net hedge losses included in continuing
       operations..................................         16,759         50,513          71,676        108,670
     Net hedge losses included in discontinued
       operations..................................              -         27,264         126,272         63,020
  Translation adjustment...........................           (507)        12,561          10,276          7,702
                                                        ----------     ----------     -----------     ----------
     Other comprehensive income (loss).............         84,619       (195,862)        313,539       (449,608)
                                                        ----------     ----------     -----------     ----------
Comprehensive income (loss)........................     $  165,418     $  (72,289)    $ 1,025,584     $  (55,819)
                                                        ==========     ==========     ===========     ==========







         The financial information included herein has been prepared by
     management without audit by independent registered public accountants.

              The accompanying notes are an integral part of these
                       consolidated financial statements.

                                       9





                        PIONEER NATURAL RESOURCES COMPANY

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                               September 30, 2006
                                   (Unaudited)


NOTE A.     Organization and Nature of Operations

     Pioneer is a Delaware  corporation  whose common stock is listed and traded
on the New York Stock Exchange.  The Company is a large  independent oil and gas
exploration and production company with operations in the United States, Canada,
Equatorial Guinea, Nigeria, South Africa and Tunisia.

NOTE B.     Basis of Presentation

     Presentation.  In the opinion of  management,  the  unaudited  consolidated
financial  statements  of the Company as of September 30, 2006 and for the three
and nine months ended  September 30, 2006 and 2005 include all  adjustments  and
accruals,  consisting only of normal recurring  accrual  adjustments,  which are
necessary for a fair presentation of the results for the interim periods.  These
interim  results are not  necessarily  indicative of results for a full year. To
conform to current period presentations, the Company reclassified the results of
discontinued  operations,  as  disclosed  in Note N, and $7.9  million and $61.8
million  of cash used for  geological  expenses  during the three and nine month
periods ended  September 30, 2005,  respectively,  from investing  activities to
operating activities in the accompanying Consolidated Statements of Cash Flows.

     Certain information and footnote disclosures normally included in financial
statements prepared in accordance with generally accepted accounting  principles
in the United States  ("GAAP") have been  condensed or omitted in this Form 10-Q
pursuant to the rules and regulations of the SEC. These  consolidated  financial
statements  should  be  read  in  connection  with  the  consolidated  financial
statements  and notes thereto  included in the  Company's  Annual Report on Form
10-K for the year ended December 31, 2005.

     Discontinued  operations.  During  2005  and  2006,  the  Company  sold its
interests in the following oil and gas asset groups:



     Country             Description of Asset Groups          Date Divested
     -------             ---------------------------          -------------
                                                     
     Canada              Martin Creek, Conroy Black and
                         Lookout Butte fields                   May 2005

     United States       Two Gulf of Mexico shelf fields        August 2005

     United States       Deepwater Gulf of Mexico fields        March 2006

     Argentina           Argentine assets                       April 2006


     In accordance with Statement of Financial Accounting Standards ("SFAS") No.
144,  "Accounting  for the  Impairment or Disposal of Long-Lived  Assets" ("SFAS
144"),  the  Company  has  reflected  the  results  of  operations  of the above
divestitures  as  discontinued  operations,   rather  than  as  a  component  of
continuing   operations.   See  Note  N  for  additional  information  regarding
discontinued operations.

     Inventories. Inventories were comprised of $107.5 million and $77.3 million
of materials and supplies and $2.0 million and $2.4 million of commodities as of
September 30, 2006 and December 31, 2005, respectively.  The Company's materials
and supplies inventory is primarily  comprised of oil and gas drilling or repair
items  such as  tubing,  casing,  chemicals,  operating  supplies  and  ordinary
maintenance  materials  and parts.  The  materials  and  supplies  inventory  is
primarily  acquired for use in future drilling  operations or repair  operations
and is carried at the lower of cost or market,  on a first-in,  first-out basis.
Commodities  inventory is carried at the lower of average  cost or market,  on a
first-in,  first-out  basis. As of September 30, 2006 and December 31, 2005, the
Company's  materials  and  supplies  inventory  was net of $7.9  million and $.2
million, respectively, of valuation reserve allowances.

                                       10





                        PIONEER NATURAL RESOURCES COMPANY

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                               September 30, 2006
                                   (Unaudited)


     Goodwill.  In accordance with SFAS No. 142,  "Goodwill and Other Intangible
Assets",  goodwill is not amortized to earnings,  but is assessed for impairment
whenever events or circumstances  indicate that impairment of the carrying value
of goodwill is likely, but no less often than annually. If the carrying value of
goodwill is determined to be impaired, it is reduced for the impaired value with
a  corresponding  charge  to  pretax  earnings  in the  period  in  which  it is
determined  to be  impaired.  During  the third  quarter  of 2006,  the  Company
performed its annual assessment of goodwill impairment and determined that there
was no impairment.

     In accordance with GAAP,  certain  qualifying  income tax benefits  derived
from  stock-based  compensation are recorded as reductions in the carrying value
of goodwill.

     Minority  interests  in  consolidated  subsidiaries.  The Company  owns the
majority interests in certain  subsidiaries with operations in the United States
and Nigeria. Associated therewith, the Company has recognized minority interests
in  consolidated  subsidiaries  of  $14.1  million  and  $9.3  million  in other
liabilities  and minority  interests in the  accompanying  Consolidated  Balance
Sheets as of September 30, 2006 and December 31, 2005, respectively.

     Minority interests in the net losses of the Company's consolidated Nigerian
subsidiary  amounting  to $742  thousand and $4.4 million for the three and nine
month periods ended September 30, 2006, respectively, and $234 thousand and $389
thousand  for the  three  and nine  month  periods  ended  September  30,  2005,
respectively,  are  included in interest  and other  income in the  accompanying
Consolidated  Statements of Operations.  Minority interests in the net income of
the Company's consolidated United States subsidiaries amounting to $589 thousand
and $2.1 million for the three and nine month periods ended  September 30, 2006,
respectively,  and $826  thousand  and $2.2 million for the three and nine month
periods ended September 30, 2005, respectively, are included in other expense in
the accompanying Consolidated Statements of Operations.

     Stock-based compensation.  On January 1, 2006, the Company adopted SFAS No.
123  (revised  2004),  "Share-Based  Payment"  ("SFAS  123(R)")  to account  for
stock-based  compensation.  Among other items, SFAS 123(R) eliminates the use of
the Accounting  Principles Board Opinion No. 25, "Accounting for Stock Issued to
Employees"  ("APB  25"),  intrinsic  value  method of  accounting  and  requires
companies to recognize  the cost of employee  services  received in exchange for
awards of equity  instruments based on the grant date fair value of those awards
in the financial statements. The Company elected to use the modified prospective
method for adoption of SFAS 123(R),  which requires  compensation  expense to be
recorded  for all unvested  stock  options and other  equity-based  compensation
beginning in the first  quarter of  adoption.  For all  unvested  stock  options
outstanding  as of January 1, 2006,  the  previously  measured but  unrecognized
compensation  expense,  based  on the  fair  value  on the  date of  grant,  was
recognized in the Company's  financial  statements over their remaining  vesting
periods,  which  ended in August  2006.  For  equity-based  compensation  awards
granted or modified subsequent to January 1, 2006,  compensation expense,  based
on the fair value on the date of grant,  is being  recognized  in the  Company's
financial   statements  over  the  vesting  period.  The  Company  utilizes  the
Black-Scholes  option  pricing  model to measure the fair value of stock options
and  utilizes  the  stock  price  on the date of  grant  for the  fair  value of
restricted  stock  awards.  Prior to the  adoption of SFAS  123(R),  the Company
followed the  intrinsic  value method in  accordance  with APB 25 to account for
stock options.  Prior period  financial  statements have not been restated.  The
modified  prospective  method  requires the Company to estimate  forfeitures  in
calculating  the expense  related to stock-based  compensation as opposed to its
prior policy of recognizing  forfeitures as they occurred.  The Company recorded
no cumulative effect as a result of adopting SFAS 123(R).

     Additionally,  under the provisions of SFAS 123(R),  deferred  compensation
recorded  under APB 25  related  to  equity-based  awards  should be  eliminated
against the  appropriate  equity  accounts.  As a result,  upon adoption of SFAS
123(R),  the Company  eliminated $45.8 million of deferred  compensation cost in
stockholders'  equity and reduced by a like amount additional paid-in capital in
the accompanying Consolidated Balance Sheet.

     For the three  and nine  months  ended  September  30,  2006,  the  Company
recorded  $7.1  million  and  $25.4   million,   respectively,   of  stock-based
compensation  costs for all plans.  The impact to net  income of  adopting  SFAS
123(R) was $359  thousand and $1.5 million for the three and nine month  periods


                                       11





                        PIONEER NATURAL RESOURCES COMPANY

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                               September 30, 2006
                                   (Unaudited)


ended September 30, 2006, respectively, or less than $.01 per diluted share. For
the three and nine month periods ended  September 30, 2006, the adoption  impact
is comprised of $153 thousand and $1.0 million,  respectively,  of  compensation
expense  associated  with stock  options and $206  thousand  and $565  thousand,
respectively,  of compensation  expense  associated with the Company's  Employee
Stock Purchase Plan,  which is a compensatory  plan under the provisions of SFAS
123(R).

     Pursuant to the provisions of SFAS 123(R),  the Company's issued shares, as
reflected in the accompanying  Consolidated Balance Sheets at September 30, 2006
and December 31, 2005, do not include  1,992,264  shares and  1,756,180  shares,
respectively,  related to  unvested  restricted  stock  awards.  During the nine
months ended September 30, 2006, the Company issued 625,098 shares of restricted
stock awards, net of associated forfeitures.

     As of  September  30,  2006,  there  was  approximately  $48.1  million  of
unrecognized  compensation expense related to unvested share-based  compensation
plan awards,  primarily  related to restricted stock awards.  This  compensation
will be recognized over the remaining vesting periods of the awards,  which is a
remaining period of less than three years.

     The following table  illustrates the pro forma effect on net income and net
income  per share as if the  Company  had  applied  the fair  value  recognition
provisions of SFAS No. 123(R) to stock-based  compensation  during the three and
nine months ended September 30, 2005:



                                                                 Three months            Nine months
                                                                    ended                   ended
                                                             September 30, 2005       September 30, 2005
                                                             ------------------       ------------------
                                                                (in thousands, except per share data)

                                                                                  
       Net income, as reported..........................        $    123,573            $    393,789
       Plus: Stock-based compensation expense
         included in net income for all awards,
         net of tax (a).................................               4,095                  12,458
       Deduct: Stock-based compensation
         determined under fair value based
         method for all awards, net of tax (a)..........              (4,586)                (14,669)
                                                                ------------            ------------
       Pro forma net income.............................        $    123,082            $    391,578
                                                                ============            ============
       Net income per share:
         Basic - as reported............................        $        .90            $       2.80
                                                                ============            ============
         Basic - pro forma..............................        $        .89            $       2.79
                                                                ============            ============
         Diluted - as reported..........................        $        .88            $       2.74
                                                                ============            ============
         Diluted - pro forma............................        $        .87            $       2.72
                                                                ============            ============

-----------
(a)  For the  three  and nine  months  ended  September  30,  2005,  stock-based
     compensation  expense included in net income is net of tax benefits of $2.4
     million and $7.2 million, respectively. Similarly, stock-based compensation
     expense  determined  under  the fair  value  method  for the three and nine
     months ended  September 30, 2005 is net of tax benefits of $2.6 million and
     $8.4 million, respectively. See Note D for additional information regarding
     the Company's income taxes.




                                       12





                        PIONEER NATURAL RESOURCES COMPANY

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                               September 30, 2006
                                   (Unaudited)


     New  accounting  pronouncements.  In July 2006,  the  Financial  Accounting
Standards  Board  ("FASB")  issued   Interpretation   No.  48,  "Accounting  for
Uncertainty  in Income Taxes" ("FIN No. 48"). The  Interpretation  clarifies the
accounting for income taxes by prescribing a minimum recognition  threshold that
a tax  position is required to meet before  being  recognized  in the  financial
statements.  FIN No. 48 also provides  guidance on measurement,  classification,
interim  accounting  and  disclosure.  FIN No. 48 is effective  for fiscal years
beginning after December 15, 2006. The Company is continuing to assess potential
impacts of this Interpretation.

     In  September  2006,  the FASB issued SFAS No. 157,  "Fair Value  Measures"
("SFAS 157"). SFAS 157 defines fair value, establishes a framework for measuring
fair value and enhances  disclosures  about fair value  measures  required under
other  accounting  pronouncements,  but does not change existing  guidance as to
whether or not an instrument is carried at fair value. SFAS 157 is effective for
fiscal years  beginning  after  November 15, 2007.  The Company is continuing to
assess the impact of SFAS 157.

     In September  2006,  the FASB issued SFAS 158,  "Employers'  Accounting for
Defined  Benefit  Pension and other  Postretirement  Plans" ("SFAS 158"),  which
amends SFAS Nos. 87, 88, 106 and 132(R).  Under SFAS 158, a business entity that
sponsors one or more single-employer defined benefit plans is required to:

     o   recognize  the  funded  status  of  a  benefit  plan--measured  as  the
         difference between plan assets at fair value  (with limited exceptions)
         and the  benefit  obligation--in its  statement of financial  position,
     o   recognize as a component of other comprehensive income, net of tax, the
         gains or  losses and  prior service costs or  credits that arise during
         the period but are not recognized as components of net periodic benefit
         cost,
     o   measure defined benefit  plan assets and  obligations as of the date of
         the employer's  fiscal  year-end  statement  of financial  position and
     o   disclose  in the notes  to financial statements  additional information
         about certain effects on net  periodic benefit cost for the next fiscal
         year that arise from delayed recognition of the gains or losses,  prior
         service costs or credits, and transition asset or obligation.

     An employer  with  publicly  traded  securities  is  required to  initially
recognize the funded status of its defined benefit  postretirement  plans and to
provide the required  disclosures  as of the end of the first fiscal year ending
after  December 15,  2006.  The Company  will adopt the  provisions  of SFAS 158
effective on December 31, 2006.  The Company's  presently  recognizes the funded
status of its defined benefit postretirement plans.  Consequently,  the adoption
of  SFAS  158  is not  expected  to  have a  material  impact  on the  Company's
consolidated financial position or results of operations.

NOTE C.     Exploratory Well Costs

     The Company  capitalizes  exploratory  well costs until a determination  is
made that the well has either found proved reserves or that it is impaired.  The
capitalized  exploratory  well costs are  presented in proved  properties in the
Consolidated  Balance  Sheets.  If the  exploratory  well  is  determined  to be
impaired, the well costs are charged to exploration and abandonments expense.


                                       13





                        PIONEER NATURAL RESOURCES COMPANY

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                               September 30, 2006
                                   (Unaudited)

     The following  table reflects the Company's  capitalized  exploratory  well
activity during the three and nine months ended September 30, 2006:



                                                                Three months             Nine months
                                                                   ended                    ended
                                                             September 30, 2006       September 30, 2006
                                                             ------------------       ------------------
                                                                           (in thousands)

                                                                                   
     Beginning capitalized exploratory well
       costs................................................    $    179,360             $    198,291
     Additions to exploratory well costs
       pending the determination of
       proved reserves......................................         120,519                  310,233
     Reclassification due to determination of
       proved reserves......................................         (53,801)                (137,272)
     Disposition of wells...................................             342                  (52,856)
     Exploratory well costs charged to exploration expense..         (13,201)                 (85,177)
                                                                ------------             ------------
      Ending capitalized exploratory well costs..............   $    233,219             $    233,219
                                                                ============             ============


     The following table provides an aging as of September 30, 2006 and December
31, 2005 of  capitalized  exploratory  well costs based on the date the drilling
was completed and the number of projects for which  exploratory  well costs have
been  capitalized for a period greater than one year since the date the drilling
was completed:



                                                               September 30,          December 31,
                                                                    2006                  2005
                                                               -------------          ------------
                                                                (in thousands, except well counts)

                                                                                
    Capitalized exploratory well costs that have been
       capitalized for a period of one year or less........    $     93,892           $     84,042
    Capitalized exploratory well costs that have been
       capitalized for a period greater than one year......         139,327                114,249
                                                               ------------           ------------
                                                               $    233,219           $    198,291
                                                               ============           ============

       Number of projects with exploratory well costs that
          have been capitalized for a period greater
          than one year....................................               7                     10
                                                               ============           ============



                                       14





                        PIONEER NATURAL RESOURCES COMPANY

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                               September 30, 2006
                                   (Unaudited)

     The following table provides the capitalized costs of exploration  projects
that have been  suspended  for more than one year as of  September  30, 2006 and
December 31, 2005:



                                                               September 30,          December 31,
                                                                    2006                  2005
                                                               -------------          ------------
                                                                          (in thousands)
                                                                               
       United States:
          Clipper..........................................    $     70,707           $          -
          Ozona Deep.......................................               -                 19,423
          Thunder Hawk.....................................               -                 25,769
          Oooguruk.........................................          52,205                 52,205

       Canada - Other......................................             211                    805
       South Africa........................................           7,227                  7,227
       Tunisia.............................................           8,977                  8,820
                                                               ------------           ------------
            Total..........................................    $    139,327           $    114,249
                                                               ============           ============


     The  following   discussion  describes  the  history  and  status  of  each
significant suspended exploratory project:

     Clipper. During 2005, the Company drilled its first exploratory well on the
Clipper  prospect,  which was a  discovery.  During  2006,  the Company  drilled
additional  wells to  determine  the  magnitude  of the  discovery,  which  were
successful. The Company is currently evaluating the plans for development of the
discovery.

     Ozona Deep and  Thunder  Hawk.  During  March 2006,  the  Company  sold its
interests in the Ozona Deep and Thunder Hawk properties as part of the Company's
deepwater  Gulf of Mexico  divestiture.  See Note N for  additional  information
regarding the Company's  divestiture of its deepwater Gulf of Mexico oil and gas
assets.

     Oooguruk. During 2003, the Company's Alaskan Oooguruk discovery wells found
quantities of oil believed to be commercial.  In 2003, the Company began farm-in
discussions with the owner of undeveloped  discoveries in adjacent acreage given
its  proximity and the potential  cost benefits of a larger scale  project.  The
farm-in was completed during 2004. Along with completing the farm-in  agreement,
Pioneer  obtained  access to  exploration  well and seismic  data to improve the
Company's  understanding  of the potential of the discoveries  without having to
drill  additional  wells.  In late 2004,  the  Company  completed  an  extensive
technical  and economic  evaluation  of the resource  potential  and a front-end
engineering design study ("FEED study") for the area.

     During the first quarter of 2006, the Company sanctioned the development of
the  discovery  and obtained the  necessary  regulatory  approvals.  The Company
installed an offshore gravel drilling and production site during the 2006 winter
construction  season and completed armoring activities during the third quarter.
A subsea flowline and facilities will be installed during 2007 to carry produced
liquids to existing  onshore  processing  facilities  at the Kuparuk River Unit.
Pioneer  plans  to drill  approximately  40  horizontal  wells  to  develop  the
discovery.  Depending  on  weather  conditions  and  facilities  completion  and
accessibility,  drilling  could begin as early as the fall of 2007.  The Company
estimates first production will occur in 2008.

     South  Africa.   During  2000,  the  Company   drilled  two  South  African
exploratory wells in the Company's Boomslang prospect. One well was unsuccessful
but the other well found  quantities of hydrocarbons  believed to be commercial.
The Boomslang discovery was not included in the initial development phase of the
South Coast Gas project.  Boomslang is an oil discovery  with a significant  gas
cap. Continued studies of the  commercialization of the project are ongoing. One
of the objectives of these studies is to determine the  commercialization of the
discovery as an oil project,  gas project or both. If  commercialized  as an oil
discovery,  earliest  production  would be 2009 and if  commercialized  as a gas
discovery, earliest production would be 2012. Partner meetings are scheduled for
the  latter  part  of 2006  to  further  discuss  the  commercialization  of the
Boomslang discovery.


                                       15







                        PIONEER NATURAL RESOURCES COMPANY

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                               September 30, 2006
                                   (Unaudited)


     Tunisia.  During  2003,  the  Company  drilled an  exploration  well on its
Anaguid Block in Tunisia which found  quantities of gas and condensate  believed
to be commercial.  During 2004, the well was scheduled and approved for extended
production tests.  However, the project operator delayed the extended production
tests  due to issues  unrelated  to the  Company  or the  project.  In the third
quarter of 2005, the project operator, along with the Company, drilled an offset
appraisal  well to the  exploration  well.  The appraisal  well  offsetting  the
exploration  well  encountered  gas and  condensate in a similar  horizon to the
initial well. The Company is currently reviewing data from the appraisal well to
determine whether development of the area is economical.

NOTE D.     Income Taxes

     The Company  accounts for income taxes in accordance with the provisions of
SFAS No. 109, "Accounting for Income Taxes" ("SFAS 109"). SFAS 109 requires that
the Company  continually assess both positive and negative evidence to determine
whether it is more  likely  than not that  deferred  tax assets can be  realized
prior  to  their  expiration.  Pioneer  monitors  Company-specific,  oil and gas
industry and worldwide  economic  factors and assesses the  likelihood  that the
Company's  net  operating  loss  carryforwards  ("NOLs") and other  deferred tax
attributes in the United States and state,  local and foreign tax  jurisdictions
will be utilized  prior to their  expiration.  During the first quarter of 2006,
the Company  utilized all of its available  United States NOLs, other than those
subject to limitations,  primarily  related to the sale of the deepwater Gulf of
Mexico assets;  accordingly,  this has accelerated the Company's payment of cash
taxes.  As of September 30, 2006 and December 31, 2005, the Company's  valuation
allowances  (relating primarily to foreign tax jurisdictions) were $96.2 million
and $95.8 million, respectively.

     Income tax provision.  The Company's income tax provisions  attributable to
income from continuing  operations  consisted of the following for the three and
nine months ended September 30, 2006 and 2005:



                                                   Three months ended             Nine months ended
                                                      September 30,                 September 30,
                                               --------------------------     --------------------------
                                                  2006            2005           2006            2005
                                               ----------      ----------     ----------      ----------
                                                                    (in thousands)
                                                                                  
       Current:
         U.S. federal.....................     $  (10,681)     $    3,308     $  (23,654)     $    7,965
         U.S. state and local.............            (55)           (474)           (52)           (343)
         Foreign..........................          7,670          10,221         24,380          24,853
                                               ----------      ----------     ----------      ----------
                                                   (3,066)         13,055            674          32,475
                                               ----------      ----------     ----------      ----------
       Deferred:
         U.S. federal.....................         34,721           2,853         83,361          55,812
         U.S. state and local.............          2,204            (203)        16,303           1,455
         Foreign..........................          6,411           1,733         10,856           3,492
                                               ----------      ----------     ----------      ----------
                                                   43,336           4,383        110,520          60,759
                                               ----------      ----------     ----------      ----------
                                               $   40,270      $   17,438     $  111,194      $   93,234
                                               ==========      ==========     ==========      ==========


                                       16






                        PIONEER NATURAL RESOURCES COMPANY

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                               September 30, 2006
                                   (Unaudited)


     The Company's  effective tax rate on continuing  operations of 33.4 percent
and 43.4  percent  during the three and nine months  ended  September  30, 2006,
respectively,  differs  from  the  combined  United  States  federal  and  state
statutory rate of approximately 36.5 percent primarily due to:

     o     foreign tax rates,
     o     adjustments  to the  deferred  tax  liability  for changes in enacted
           tax laws and rates, as discussed below,
     o     statutes in  foreign  jurisdictions that  differ  from  those  in the
           United States
     o     recognition of  $6.2 million  of deferred  tax benefit,  in the third
           quarter of 2006,  as a result of  conversion  of  senior  convertible
           notes prior  to the Company's repayment  of the  debt principal  (see
           Note E) and
     o     expenses for  unsuccessful well costs and associated acreage costs in
           foreign locations where the Company does not expect to receive income
           tax benefits; during the three and nine month periods ended September
           30, 2006,  this primarily related to Nigerian exploration expenses of
           approximately $2.6 million and $41.8 million, respectively.

     On May 18, 2006,  the State of Texas enacted  legislation  that changed the
existing Texas  franchise tax from a tax based on net income or taxable  capital
to an income tax based on a defined  calculation  of gross  margin  (the  "Texas
margin tax").  Also, during the second quarter of 2006, the Canadian federal and
provincial  governments  enacted tax rate reductions that will be phased in over
several  years.  SFAS 109  requires  that  deferred  tax balances be adjusted to
reflect tax rate  changes  during the periods in which the tax rate  changes are
enacted.  The  adjustment  due to the  enactment of the Texas margin tax and the
Canadian tax rate changes  resulted in a $13.5 million United States tax expense
and a $9.8 million  Canadian tax benefit during the nine months ended  September
30, 2006.

     Included in the Company's  income tax provision from continuing  operations
for the three and nine months  ended  September  30,  2005 is the  reversal of a
$27.3 million tax benefit recorded principally in the third quarter of 2004 as a
result  of the  cancellation  of the  development  of the  Olowi  block  and the
Company's decision to exit Gabon.  Reversal of the tax benefit was the result of
signing an agreement in June 2005 to sell the Company's shares in the subsidiary
that owns the interest in the Olowi block to an unaffiliated  buyer,  which made
it more  likely  than not that the  Company  would not  realize  the  originally
recorded tax benefit.  The Company completed the sale of the Gabonese subsidiary
during 2005.

     Discontinued  operations.  The Company's income tax provisions attributable
to income from discontinued  operations consisted of the following for the three
and nine months ended September 30, 2006 and 2005:



                                             Three months ended              Nine months ended
                                                September 30,                  September 30,
                                          -------------------------      --------------------------
                                             2006           2005            2006            2005
                                          ----------     ----------      ----------     -----------
                                                                    (in thousands)
                                                                            
      Current:
        U.S. federal..................    $      385     $        -      $   148,984     $    2,751
        U.S. state and local..........            27              -            1,877            118
        Foreign.......................             -         (1,056)           2,126          3,964
                                          ----------     ----------      -----------     ----------
                                                 412         (1,056)         152,987          6,833
                                          ----------     ----------      -----------     ----------
      Deferred:
        U.S. federal..................          (877)        28,257          140,025        112,324
        U.S. state and local..........           169          1,431            6,488          5,171
        Foreign.......................            (2)         7,280             (125)        49,633
                                          ----------     ----------      -----------     ----------
                                                (710)        36,968          146,388        167,128
                                          ----------     ----------      -----------     ----------
                                          $     (298)    $   35,912      $   299,375     $  173,961
                                          ==========     ==========      ===========     ==========


                                       17





                        PIONEER NATURAL RESOURCES COMPANY

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                               September 30, 2006
                                   (Unaudited)

NOTE E.     Long-term Debt

     Lines of credit.  The Company has an Amended and Restated 5-Year  Revolving
Credit Agreement (the "Credit  Agreement") that had an original maturity date in
September  2010  unless  extended  in  accordance  with the terms of the  Credit
Agreement.  The terms of the Credit Agreement provide for initial aggregate loan
commitments  of $1.5  billion,  which may be  increased  to a maximum  aggregate
amount of $1.8 billion if the lenders increase their loan commitments or if loan
commitments of new financial institutions are added to the Credit Agreement.  As
of  September  30, 2006,  the Company had no  outstanding  borrowings  under the
Credit  Agreement.  If the Company had  outstanding  borrowings,  the  Company's
annual  interest  rate  incurred  on such  borrowings  would  approximate  LIBOR
(approximately  5.4  percent  per annum at  September  30,  2006) plus a current
additional margin to LIBOR (.875 percent per annum as of September 30, 2006).

     Effective September 29, 2006,  participating  lenders extended the maturity
date on $1.395 billion of aggregate loan commitments  under the Credit Agreement
to September 30, 2011.

     As of September 30, 2006, the Company had $157.2 million of undrawn letters
of credit,  of which $153.6  million were undrawn  commitments  under the Credit
Agreement,  leaving the Company with $1.3 billion of unused  borrowing  capacity
under the Credit Agreement.  The letters of credit  outstanding under the Credit
Agreement are subject to a per annum fee,  based on a grid of the Company's debt
rating,  currently  representing  the  Company's  LIBOR margin (.875  percent at
September 30, 2006) plus .125 percent.

     The Credit Agreement  contains certain financial  covenants,  which include
the (i) maintenance of a ratio of the Company's  earnings before gain or loss on
the  disposition  of  assets,  interest  expense,  income  taxes,  depreciation,
depletion  and  amortization  ("DD&A")  expense,  exploration  and  abandonments
expense and other noncash charges and expenses to consolidated  interest expense
of at least  3.5 to 1.0;  (ii)  maintenance  of a ratio  of  total  debt to book
capitalization less intangible assets,  accumulated other  comprehensive  income
and certain  noncash asset  impairments  not to exceed .60 to 1.0; and (iii) the
maintenance of an annual ratio of the net present value of the Company's oil and
gas  properties to total debt of at least 1.50 to 1.0 until March 2007, and 1.75
to 1.0 thereafter. The lenders may declare any outstanding obligations under the
Credit Agreement immediately due and payable upon the occurrence, and during the
continuance of, an event of default,  which includes a defined change in control
of the Company. As of September 30, 2006, the Company was in compliance with all
of its debt covenants.

     Senior notes.  During May 2006,  the Company  issued $450 million of 6.875%
senior  notes  due 2018 (the  "6.875%  Notes")  and  received  proceeds,  net of
issuance  discount and underwriting  costs, of $447.4 million.  The Company used
the net  proceeds  from the issuance of the 6.875%  Notes to  repurchase  $346.2
million of its  outstanding  $350  million of 6.50%  senior  notes due 2008 (the
"6.50% Notes") and for general corporate purposes. The Company recorded a charge
of $8.1  million  in the  second  quarter  of 2006  associated  with  the  early
extinguishment of the 6.50% Notes.

     Senior  convertible  notes.  In connection  with the Evergreen  merger,  in
September  2004, the Company  assumed $100 million of 4 3/4% senior  convertible
notes due 2021  (the  "Convertible  Notes").  The  Convertible  Notes are due on
December 15, 2021,  but are  redeemable  at either the  Company's  option or the
holder's option on other specified  dates. As a result of the Evergreen  merger,
the Convertible Notes are convertible at any time by the holders as discussed in
the following paragraph. Holders may also require the Company to purchase all or
part of the  Convertible  Notes on  December  20,  2006,  December  15,  2011 or
December 15, 2016 at a purchase price of 100 percent of the principal  amount of
the  Convertible  Notes plus accrued and unpaid interest  (including  contingent
interest).  On December 20, 2006, the Company may redeem the Convertible  Notes,
in whole or in part, in cash, for shares of common stock,  or in any combination
of cash and common stock. On December 15, 2011 or December 15, 2016, the Company
must pay the repurchase price in cash. The Company currently intends to exercise
its rights under the indenture and redeem the Convertible  Notes on December 20,
2006 in cash at par value, if the  Convertible  Notes have not been converted by
the holders.

                                       18






                        PIONEER NATURAL RESOURCES COMPANY

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                               September 30, 2006
                                   (Unaudited)


     Each $25.00 principal  balance  outstanding  under the Convertible Notes is
convertible  into .58175  shares of the  Company's  common stock plus $19.98 per
share (as an example,  each $1,000 of Convertible Notes principal would exchange
for 23.27 shares of the Company's  common stock plus $799 of cash).  The portion
of the  Convertible  Notes  exchangeable  into  the  Company's  common  stock is
included in the computation of the Company's average diluted shares outstanding.

     During the second and third  quarters  of 2006,  holders of $73  million of
Convertible Notes exercised their conversion rights.  Associated therewith,  the
Company paid $58.3  million in cash,  issued 1.7 million  shares of common stock
and recognized a net increase to stockholders' equity of $16.1 million.

     Rating  agencies.   In  January  2006,  Moody's  Investor  Services,   Inc.
("Moody's")  downgraded  the  Company's  debt  ratings  from  Baa3 to  Ba1.  The
downgrade  triggered  increases  in the pricing  grid for  borrowings  under the
Credit Agreement.

NOTE F.     Derivative Financial Instruments

     Fair value  hedges.  The  Company  monitors  the debt  capital  markets and
interest  rate  trends to  identify  opportunities  to enter into and  terminate
interest  rate  swap  contracts  with the  objective  of  reducing  its costs of
capital.  As of September 30, 2006 and December 31, 2005,  the Company was not a
party to any open fair value hedges.

     As of September 30, 2006,  the carrying  value of the  Company's  long-term
debt in the  accompanying  Consolidated  Balance Sheets  included a $3.4 million
reduction  attributable  to net deferred  hedge losses on terminated  fair value
hedges that are being  amortized as net  increases to interest  expense over the
original  terms of the terminated  agreements.  During the three and nine months
ended  September 30, 2006, the Company's  amortization  of deferred hedge losses
and gains on  terminated  interest rate swaps  increased the Company's  reported
interest expense by $56 thousand and decreased the reported  interest expense by
$153 thousand,  respectively,  as compared to deferred gains  amortization which
reduced  the  Company's  reported  interest  expense by $487  thousand  and $3.8
million during the same respective periods in 2005.

     The following  table sets forth,  as of September  30, 2006,  the scheduled
amortization  of net deferred  hedge losses on  terminated  interest rate hedges
(including  terminated  fair value and cash flow hedges) that will be recognized
as increases to the Company's future interest expense:



                            Three months
                               ending                      Year ending December 31,
                            December 31,     -------------------------------------------------
                                2006            2007         2008         2009          2010      Thereafter
                           --------------    ---------    ---------     ---------    ---------    ----------
                                                           (in thousands)

                                                                                
    Net deferred hedge

      losses.............     $     57       $     325    $     371     $     416    $     466    $    3,530
                              ========       =========    =========     =========    =========    ==========


     Cash flow hedges.  The Company utilizes commodity swap and collar contracts
to (i) reduce the effect of price  volatility  on the  commodities  the  Company
produces and sells,  (ii) support the  Company's  annual  capital  budgeting and
expenditure  plans and (iii) reduce commodity price risk associated with certain
capital projects.  As of September 30, 2006, all of the Company's open commodity
hedges are designated as hedges of Canadian and United States  forecasted sales.
The Company also, from time to time,  utilizes interest rate contracts to reduce
the effect of interest rate volatility on the Company's indebtedness and forward
currency  exchange  agreements  to reduce the effect of U.S.  dollar to Canadian
dollar exchange rate volatility.

                                       19





                        PIONEER NATURAL RESOURCES COMPANY

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                               September 30, 2006
                                   (Unaudited)


     Oil prices.  All material physical sales contracts  governing the Company's
oil  production  have been tied  directly or  indirectly  to NYMEX  prices.  The
following  table sets forth the  volumes  hedged in Bbls under  outstanding  oil
hedge  contracts  and the  weighted  average  NYMEX  prices  per  Bbl for  those
contracts as of September 30, 2006:




                                    First            Second            Third             Fourth          Outstanding
                                   Quarter           Quarter          Quarter            Quarter           Average
                                -------------    --------------    --------------    --------------    --------------
                                                                                        
Average daily oil
  Production hedged:
  2006 - Swap Contracts
     Volume (Bbl)..........                                                                   5,000             5,000
     Price per Bbl.........                                                          $        37.20    $        37.20

  2006 - Collar Contracts
     Volume (Bbl).........                                                                    6,500             6,500
     Price per Bbl........                                                           $ 41.92-$66.41    $ 41.92-$66.41

  2007 - Swap Contracts (a)
     Volume (Bbl).........              6,000             6,000             6,000             6,000             6,000
     Price per Bbl........      $       31.26    $        31.26    $        31.26    $        31.26    $        31.26

  2007 - Collar Contracts (a)
     Volume (Bbl).........              1,000             1,000             1,000             1,000             1,000
     Price per Bbl........      $ 50.00-89.00    $ 50.00-$89.00    $ 50.00-$89.00    $ 50.00-$89.00    $ 50.00-$89.00

  2008 - Swap Contracts
     Volume (Bbl).........              6,500             6,500             6,500             6,500             6,500
     Price per Bbl........      $       31.19$            31.19    $        31.19    $        31.19    $        31.19

---------
(a)  Subsequent  to  September  30,  2006,  the  Company  reduced  its oil hedge
     positions by terminating  (i) 1,000 Bbls per day of 2007 oil swap contracts
     with an average  per Bbl fixed price of $30.80 and (ii) the 2007 oil collar
     contracts included in the table above.



     The Company reports average oil prices per Bbl including the effects of oil
quality  adjustments,  amortization of deferred  volumetric  production  payment
("VPP") revenue and the net effect of oil hedges. The following table sets forth
(i)  the  Company's  oil  prices  from  continuing  operations,   both  reported
(including  hedge results and amortization of deferred VPP revenue) and realized
(excluding  hedge  results and  amortization  of  deferred  VPP  revenue),  (ii)
amortization of deferred VPP revenue to oil revenue from  continuing  operations
and (iii) the net effect of  settlements of oil price hedges on oil revenue from
continuing operations for the three and nine months ended September 30, 2006 and
2005:



                                                  Three months ended        Nine months ended
                                                     September 30,            September 30,
                                                ----------------------    ----------------------
                                                   2006        2005         2006          2005
                                                ---------    ---------    ---------    ---------

                                                                           
    Average price reported per Bbl.........     $   70.89    $   42.51    $   66.83    $   38.15
    Average price realized per Bbl.........     $   69.87    $   60.35    $   65.67    $   52.03
    VPP increase to oil revenue
      (in millions)........................     $    29.2    $       -    $    87.2    $       -
    Reduction to oil revenue from hedging
      activity (in millions) (a)...........     $   (26.9)   $   (51.5)   $   (79.4)   $  (122.0)

------------
(a)  Excludes  hedge  losses  of  $12.3  million  attributable  to  discontinued
     operations  for the nine months ended  September 30, 2006 and $13.2 million
     and $39.8  million  during the three and nine months  ended  September  30,
     2005, respectively.




                                       20





                        PIONEER NATURAL RESOURCES COMPANY

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                               September 30, 2006
                                   (Unaudited)


     Natural  gas  liquids  prices.  During  the  three  and nine  months  ended
September  30,  2006 and 2005,  the  Company  did not  enter  into any NGL hedge
contracts. There were no outstanding NGL hedge contracts at September 30, 2006.

     Gas prices.  The  Company  employs a policy of hedging a portion of its gas
production based on the index price upon which the gas is actually sold in order
to mitigate the basis risk between  NYMEX  prices and actual  index  prices,  or
based on NYMEX  prices if NYMEX  prices  are  highly  correlated  with the index
price.  The  following  table  sets  forth the  volumes  hedged in MMBtus  under
outstanding gas hedge contracts and the weighted  average index prices per MMBtu
for those contracts as of September 30, 2006:




                                    First            Second            Third             Fourth          Outstanding
                                   Quarter           Quarter          Quarter            Quarter           Average
                                -------------    --------------    --------------    --------------    --------------
                                                                                        
Average daily gas
  production hedged:
  2006 - Swap Contracts
     Volume (MMBtu)..........                                                                63,875            63,875
     Price per MMBtu.........                                                        $         4.32    $         4.32

  2006 - Collar Contracts
     Volume (MMBtu).........                                                                 95,000            95,000
     Price per MMBtu........                                                         $  6.55-$14.49    $  6.55-$14.49

  2007 - Swap Contracts (a)
     Volume (MMBtu).........           59,071            59,146            59,231            59,329            59,195
     Price per MMBtu........    $        7.07    $         7.06    $         7.06    $         7.06    $         7.06

  2007 - Collar Contracts
     Volume (MMBtu).........           25,000                 -                 -                 -              6,164
     Price per MMBtu........    $ 9.00-$11.52                 -                 -                 -    $  9.00-$11.52

  2008 - Swap Contracts
     Volume (MMBtu).........           15,000            15,000            15,000            15,000            15,000
     Price per MMBtu........    $        8.62    $         8.62    $         8.62    $         8.62    $         8.62

-------------
(a)  Subsequent  to September  30,  2006,  the Company  increased  its gas hedge
     position by entering  into gas swap  contracts for (i) 40,000 MMBtu per day
     of forecasted 2007 gas sales at a weighted average price per MMBtu of $7.40
     (Panhandle  Eastern  Pipeline  Oklahoma  (mainline)  index  price) and (ii)
     10,000  MMBtu per day of  forecasted  2007 gas sales at a weighted  average
     price per MMBtu of $7.80 (Houston Ship Channel index price).




                                       21





                        PIONEER NATURAL RESOURCES COMPANY

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                               September 30, 2006
                                   (Unaudited)


     The Company reports average gas prices per Mcf including the effects of Btu
content,  gas processing,  shrinkage  adjustments,  amortization of deferred VPP
revenue and the net effect of gas hedges. The following table sets forth (i) the
Company's gas prices from continuing operations,  both reported (including hedge
results and amortization of deferred VPP revenue) and realized  (excluding hedge
results and amortization of deferred VPP revenue), (ii) amortization of deferred
VPP revenue to gas revenue from  continuing  operations and (iii) the net effect
of settlements of gas price hedges on gas revenue from continuing operations for
the three and nine months ended September 30, 2006 and 2005:



                                                Three months ended         Nine months ended
                                                  September 30,              September 30,
                                             -----------------------     ----------------------
                                                2006          2005         2006         2005
                                             ----------    ---------    ---------     ---------

                                                                          
  Average price reported per Mcf........     $    6.33     $    7.22    $    6.43     $    6.66
  Average price realized per Mcf........     $    5.77     $    7.51    $    6.17     $    6.53
  VPP increase to gas revenue
    (in millions).......................     $    18.2     $    21.9    $    56.0     $    54.0
  Reduction to gas revenue from hedging
    activity (in millions) (a)..........     $    (1.3)    $   (31.1)       (32.9)    $   (37.4)

------------
(a)  Excludes  hedge  losses  of  $3.4  million   attributable  to  discontinued
     operations  for the nine months ended  September 30, 2006 and $26.6 million
     and $54.1  million  during the three and nine months  ended  September  30,
     2005, respectively.



     Interest rate.  During April 2006, the Company entered into costless collar
contracts and  designated  the  contracts as cash flow hedges of the  forecasted
interest  rate risk  associated  with the coupon  rate on the  Company's  6.875%
Notes,  which were issued on May 1, 2006. The Company  terminated these costless
collar  contracts for a gain of $1.3 million,  which was recorded in accumulated
other comprehensive income (loss) - net deferred hedge losses, net of tax ("AOCI
- Hedging").  The Company did not realize any ineffectiveness in connection with
the costless collar  contracts  during the three and nine months ended September
30, 2006. See Note E for information regarding the 6.875% Notes.

     Hedge  ineffectiveness.  During the three months ended  September 30, 2006,
the Company recorded $1.4 million of net hedge ineffectiveness  charges to other
expense from  continuing  operations and during the nine months ended  September
30, 2006, the Company recorded $9.6 million of net hedge ineffectiveness credits
to other  expense from  continuing  operations,  as compared to $9.2 million and
$18.5 million of net ineffectiveness  charges during the same respective periods
in 2005.  Hedge  ineffectiveness  credits and charges  represent the ineffective
portions  of  changes  in the fair  values of the  Company's  cash flow  hedging
instruments.  These  credits  and  charges  primarily  result  from  changes  in
correlations and derivative fair values  associated with commodity price indexes
of financial  hedge  derivatives  and the commodity  price indexes of the hedged
forecasted production for certain fields.

     AOCI - Hedging.  As of September  30, 2006 and  December  31, 2005,  AOCI -
Hedging  represented  net deferred  losses of $203.4 million and $506.6 million,
respectively.  The AOCI - Hedging balance as of September 30, 2006 was comprised
of $165.0 million of net deferred losses on the effective  portions of open cash
flow hedges,  $156.5  million of net  deferred  losses on  terminated  cash flow
hedges  (including  $1.8 million of net deferred  losses on terminated cash flow
interest  rate  hedges)  and  $118.1  million of  associated  net  deferred  tax
benefits.  The decrease in AOCI - Hedging during the nine months ended September
30, 2006 was primarily  attributable to the termination and  reclassification to
discontinued  operations of the underlying  balances related to hedges that were
designated as deepwater Gulf of Mexico hedges, declines in market-quoted forward
commodity  prices and the  reclassification  of net deferred hedge losses to net
income as derivatives matured by their terms. The net deferred losses associated
with open cash flow hedges remain subject to market price fluctuations until the
positions  are  either  settled  under  the  terms  of the  hedge  contracts  or
terminated prior to settlement.  The net deferred losses on terminated cash flow
hedges are fixed.

                                       22





                        PIONEER NATURAL RESOURCES COMPANY

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                               September 30, 2006
                                   (Unaudited)


     During  the twelve  months  ending  September  30,  2007,  based on current
estimates of future  commodity  prices,  the Company expects to reclassify $49.4
million of net deferred losses  associated with open commodity  hedges and $52.7
million  of net  deferred  losses on  terminated  commodity  hedges  from AOCI -
Hedging  to oil and  gas  revenues.  The  Company  also  expects  to  reclassify
approximately  $37.3 million of net deferred income tax benefits associated with
commodity  hedges during the twelve months ending September 30, 2007 from AOCI -
Hedging to income tax benefit.

     The following  table sets forth,  as of September  30, 2006,  the scheduled
amortization of net deferred gains (losses) on terminated  commodity hedges that
will be recognized as decreases in the case of losses, and increases in the case
of gains, to the Company's future oil and gas revenues:



                                            First        Second         Third        Fourth
                                           Quarter       Quarter       Quarter       Quarter        Total
                                          ---------     ---------     ---------     ---------     ----------
                                                                      (in thousands)

                                                                                   
2006 net deferred hedge gain...........                                             $   1,438     $    1,438
2007 net deferred hedge losses (a).....   $ (18,819)    $ (17,928)    $ (17,416)    $ (16,272)    $  (70,435)
2008 net deferred hedge losses.........   $ (20,285)    $ (17,541)    $ (17,403)    $ (17,718)    $  (72,947)
2009 net deferred hedge losses.........   $  (2,329)    $    (232)    $    (230)    $    (822)    $   (3,613)
2010 net deferred hedge losses.........   $    (666)    $    (620)    $    (578)    $    (539)    $   (2,403)
2011 net deferred hedge losses.........   $    (873)    $    (889)    $    (903)    $    (906)    $   (3,571)
2012 net deferred hedge losses.........   $    (810)    $    (791)    $    (784)    $    (772)    $   (3,157)
                                                                                                  ----------
                                                                                                  $ (154,688)
                                                                                                  ==========

---------
(a)  Does not  include  approximately  $12  million of 2007 net  deferred  hedge
     losses attributable to commodity hedges terminated after September 30, 2006
     that are included in the Company's  derivative  obligations as of September
     30, 2006.




                                       23





                        PIONEER NATURAL RESOURCES COMPANY

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                               September 30, 2006
                                   (Unaudited)


NOTE G.     Asset Retirement Obligations

     The Company's asset retirement  obligations  primarily relate to the future
plugging  and  abandonment  of proved  properties  and related  facilities.  The
Company  does not  provide  for a market  risk  premium  associated  with  asset
retirement  obligations  because a reliable  estimate cannot be determined.  The
Company has no assets that are legally restricted for purposes of settling asset
retirement  obligations.  The following  table  summarizes  the Company's  asset
retirement obligation transactions recorded in accordance with the provisions of
SFAS No. 143,  "Accounting  for Asset  Retirement  Obligations"  and SFAS No. 5,
"Accounting for Contingencies"  during the three and nine months ended September
30, 2006 and 2005:



                                                      Three months ended             Nine months ended
                                                          September 30,                 September 30,
                                                   -------------------------     -------------------------
                                                      2006           2005           2006           2005
                                                   ----------     ----------     ----------     ----------
                                                                       (in thousands)

                                                                                    
       Beginning asset retirement obligations      $  155,583     $  117,753     $  157,035     $  120,879
         Liabilities assumed in acquisitions....          226          3,013            909          3,013
         New wells placed on production and
            changes in estimates (a)............        8,597         32,813         51,634         35,408
         Disposition of wells...................            -        (17,863)       (44,042)       (23,101)
         Liabilities settled....................       (9,913)        (3,311)       (13,783)        (7,566)
         Accretion of discount on continuing
            operations..........................        1,168          1,094          3,470          3,183
         Accretion of discount on discontinued
            operations..........................            -            874            804          3,027
         Currency translation...................          (23)           754            611            284
                                                   ----------     ----------     ----------     ----------
       Ending asset retirement obligation.......   $  155,638     $  135,127     $  155,638     $  135,127
                                                   ==========     ==========     ==========     ==========

-----------
(a)  During the nine months ended  September  30, 2006 and each of the three and
     nine month periods ended September 30, 2005, the Company recorded increases
     of $42.0  million  and  $32.8  million,  respectively,  to the  abandonment
     estimates of the respective  periods for the East Cameron  facilities  that
     were  destroyed by Hurricane  Rita in 2005,  which amounts are reflected in
     exploration  and  abandonments  expense  in the  accompanying  Consolidated
     Statements of Operations.



     The Company records the current and noncurrent portions of asset retirement
obligations  in other current  liabilities  and other  liabilities  and minority
interests,  respectively,  in the accompanying  Consolidated Balance Sheets. The
current  portions of the Company's asset  retirement  obligations  totaled $79.4
million and $58.0  million as of  September  30,  2006 and  December  31,  2005,
respectively.

NOTE H.     Postretirement Benefit Obligations

     As of September  30, 2006 and  December 31, 2005,  the Company had recorded
$19.0  million  and  $18.6  million,   respectively,   of  unfunded  accumulated
postretirement benefit obligations, the current and noncurrent portions of which
are included in other current  liabilities  and other  liabilities  and minority
interests,  respectively, in the accompanying Consolidated Balance Sheets. These
obligations  are  comprised  of five plans of which four  relate to  predecessor
entities  that the Company  acquired.  These plans had no assets as of September
30, 2006 or December 31, 2005. The  participants of these plans,  other than the
Company's retirement plan, are not current employees of the Company.


                                       24





                        PIONEER NATURAL RESOURCES COMPANY

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                               September 30, 2006
                                   (Unaudited)


     The  following  table   reconciles   changes  in  the  Company's   unfunded
accumulated  postretirement  benefit obligations during the three and six months
ended September 30, 2006 and 2005:



                                                          Three months ended          Nine months ended
                                                             September 30,              September 30,
                                                       -----------------------     ----------------------
                                                          2006          2005          2006         2005
                                                       ---------     ---------     ---------     --------
                                                                          (in thousands)

                                                                                     
       Beginning accumulated postretirement
         benefit obligations......................     $  18,915     $  15,517     $  18,576     $  15,534
         Net benefit payments.....................          (376)         (413)         (964)       (1,042)
         Service costs............................           204            81           612           243
         Accretion of discounts...................           259           225           778           675
                                                       ---------     ---------     ---------     ---------
       Ending accumulated postretirement
         benefit obligations......................     $  19,002     $  15,410     $  19,002     $  15,410
                                                       =========     =========     =========     =========


NOTE I.     Commitments and Contingencies

     Legal actions. The Company is party to the legal actions that are described
below. The Company is also party to other  proceedings and claims  incidental to
its business.  While many of these matters  involve  inherent  uncertainty,  the
Company believes that the amount of the liability,  if any,  ultimately incurred
with  respect to such  other  proceedings  and  claims  will not have a material
adverse effect on the Company's consolidated financial position as a whole or on
its liquidity,  capital  resources or future annual  results of operations.  The
Company will continue to evaluate its litigation matters on a quarter-by-quarter
basis and will  adjust its  litigation  reserves as  appropriate  to reflect its
assessment of the then current status of litigation.

     Alford.  The Company is party to a 1993 class action  lawsuit  filed in the
26th Judicial District Court of Stevens County, Kansas by two classes of royalty
owners,  one for  each  of the  Company's  gathering  systems  connected  to the
Company's  Satanta gas plant.  The  plaintiffs in the case assert that they were
improperly  charged  expenses  (primarily field  compression),  which plaintiffs
allege are a "cost of production,"  and for which the plaintiffs  claim they, as
royalty  owners,  are not  responsible.  Plaintiffs  also  claim  that  they are
entitled  to 50 percent of the value of the helium  extracted  at the  Company's
Satanta gas plant.

     During the third  quarter of 2006,  the  Company  reached an  agreement  to
settle the claims made in the  lawsuit.  Under the terms of the  agreement,  the
Company  agreed to make cash  payments  to settle the  plaintiffs'  claims  with
respect to production  occurring on and before  December 31, 2005. The Company's
portion of the cash payments is expected to be approximately  $32.7 million (all
of which has been previously accrued),  of which approximately $17.0 million was
paid  during the third  quarter of 2006 and the  remaining  approximately  $15.7
million  will be paid in the third  quarter of 2007.  The Company also agreed to
adjust  the  manner  in which  royalty  payments  to the class  members  will be
calculated for production  occurring on and after January 1, 2006,  which change
is not expected to have a material effect on the Company's liquidity,  financial
position or future results of operations.

     The  settlement  is not final  until  approved by the court and any appeals
filed within 60 days of final approval are resolved. A final approval hearing is
scheduled for December 15, 2006,  and if court  approval is obtained and appeals
are not taken,  it is expected that the  settlements  will be final in the first
quarter of 2007.

     MOSH  Holding.  The Company and its  principal  United  States  subsidiary,
Pioneer  Natural  Resources USA, Inc., were named as defendants in MOSH Holding,
L.P. v Pioneer Natural Resources  Company;  Pioneer Natural Resources USA, Inc.;
Woodside  Energy (USA) Inc.; and JPMorgan Chase Bank, NA, as Trustee of the Mesa
Offshore  Trust,  which was filed on April 11, 2005,  in the  District  Court of
Travis County,  Texas (250th Judicial District).  The plaintiff is a unit holder
in the Mesa  Offshore  Trust,  which  was  created  in 1982 as the sole  limited
partner in a partnership  that holds an overriding  royalty  interest in certain
oil and gas leases offshore  Louisiana and Texas. The plaintiff alleges that the
Company,  together with Woodside Energy (USA) Inc.  ("Woodside"),  concealed the

                                       25





                        PIONEER NATURAL RESOURCES COMPANY

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                               September 30, 2006
                                   (Unaudited)


value of the royalty  interest and worked to terminate the Mesa  Offshore  Trust
prematurely  and to capture for itself and  Woodside  profits that belong to the
Mesa Offshore  Trust.  The plaintiff  also alleges  breaches of fiduciary  duty,
misapplication of trust property, common law fraud, gross negligence, and breach
of the conveyance  agreement for the  overriding  royalty  interest.  The claims
appear to relate principally to farmout arrangements established in 2003 for two
offshore  properties,  the Brazos Area Block A-7 and Brazos Area Block A-39. The
relief  sought by the  plaintiff  includes  monetary  and  punitive  damages and
certain equitable relief,  including an accounting of expenses,  a setting aside
of certain  farmouts,  and a temporary  and  permanent  injunction.  The Company
believes  the  claims  are  without  merit and  intends  to defend  the  lawsuit
vigorously.

     Dorchester  Refining  Company  Site. A  subsidiary  of the Company has been
notified by a letter from the Texas Commission on Environmental Quality ("TCEQ")
dated August 24, 2005 that the TCEQ considers the subsidiary to be a potentially
responsible  party  with  respect  to  the  Dorchester  Refining  Company  State
Superfund  Site  located  in  Mount  Pleasant,  Texas.  In  connection  with the
acquisition  of oil and gas  assets in 1991,  the  Company  acquired  a group of
companies,  one of which was an entity that had owned a refinery  located at the
Mount Pleasant site from 1977 until 1984.  According to the TCEQ,  this refinery
was  responsible  for releases of  hazardous  substances  into the  environment.
Pursuant to applicable Texas law, the Company's  subsidiary,  which does not own
any  material  assets or  conduct  any  material  operations,  may be subject to
strict,  joint and  several  liability  for the costs of  conducting  a study to
evaluate  potential  remedial  options  and  for the  costs  of  performing  any
remediation  ultimately  required  by the TCEQ.  The  Company  does not know the
nature  and  extent  of  the  alleged  contamination,  the  potential  costs  of
remediation  or the portion,  if any, of such costs that may be allocable to the
Company's  subsidiary;  however,  the Company has noted that there  appear to be
other operators or owners who may share  responsibility for these costs and does
not expect  that any such  additional  liability  will have a  material  adverse
effect on its  consolidated  financial  position as a whole or on its liquidity,
financial position or future annual results of operations.

     Environmental  Protection  Agency  Investigation.  On November 4, 2005, the
Company learned from the U.S.  Environmental  Protection  Agency that the agency
was  conducting a criminal  investigation  into a 2003 spill that  occurred at a
Company-operated  drilling  rig  located  on an ice island  offshore  Kuparuk in
Harrison Bay, Alaska.  The  investigation is being conducted in conjunction with
the U.S.  Attorney's Office for the District of Alaska. The spill was previously
investigated by the Alaska  Department of  Environmental  Conservation  ("ADEC")
and,  following  completion of a clean up, the ADEC issued a letter  stating its
determination  that,  at that  time,  the site  did not  pose a threat  to human
health, safety or welfare, or the environment.  The Company is fully cooperating
with the government's investigation.

NOTE J.     Income Per Share From Continuing Operations

     Basic income per share from  continuing  operations is computed by dividing
income from  continuing  operations  by the  weighted  average  number of common
shares  outstanding for the period.  The computation of diluted income per share
from continuing  operations  reflects the potential dilution that could occur if
securities or other  contracts to issue common stock that are dilutive to income
from  continuing  operations  were  exercised or converted  into common stock or
resulted in the  issuance of common  stock that would then share in the earnings
of the Company.

                                       26




                        PIONEER NATURAL RESOURCES COMPANY

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                               September 30, 2006
                                   (Unaudited)

     The following  table is a  reconciliation  of basic income from  continuing
operations to diluted income from  continuing  operations for the three and nine
months ended September 30, 2006 and 2005:


                                                     Three months ended             Nine months ended
                                                        September 30,                  September 30,
                                                  -------------------------     -------------------------
                                                     2006           2005           2006           2005
                                                  ----------     ----------     ----------     ----------
                                                                       (in thousands)
                                                                                   
      Basic income from continuing
        operations...........................     $   80,326     $   61,513     $  145,245     $  111,464
      Interest expense on convertible notes,
        net of tax...........................            311            802          1,914          2,405
                                                  ----------     ----------     ----------     ----------
      Diluted income from continuing
        operations...........................     $   81,637     $   62,315     $  147,159     $  113,869
                                                  ==========     ==========     ==========     ==========

     The following table is a  reconciliation  of basic weighted  average common
shares outstanding to diluted weighted average common shares outstanding for the
three and nine months ended September 30, 2006 and 2005:


                                                     Three months ended             Nine months ended
                                                        September 30,                  September 30,
                                                  -------------------------     ------------------------
                                                     2006           2005           2006           2005
                                                  ----------     ----------     ----------     ---------
                                                                       (in thousands)
                                                                                   
      Weighted average common shares
        outstanding (a):
           Basic.............................        124,021        137,655        125,520       140,436
           Dilutive common stock options (b).            697          1,106            816         1,169
           Restricted stock awards...........          1,135            698            954           838
           Convertible notes dilution (c)....            881          2,327          1,844         2,327
                                                  ----------     ----------     ----------     ---------

           Diluted ..........................        126,734        141,786        129,134       144,770
                                                  ==========     ==========     ==========     =========

---------------
(a)  During August 2005, the Company's board of directors (the "Board") approved
     a share repurchase program  authorizing the purchase of up to $1 billion of
     the Company's common stock, $641 million of which was completed in 2005 and
     an additional  $294.2 million of which has been completed through September
     30, 2006.
(b)  Common  stock  options  to  purchase  2,857  shares  of common  stock  were
     outstanding but not included in the computation of diluted income per share
     from  continuing  operations for the three months ended September 30, 2006,
     because the  exercise  prices of the options  were greater than the average
     market price of the common shares and would be anti-dilutive to
       the computations.
(c)  The  Company  had  $27  million  and  $100  million  principal  amounts  of
     Convertible  Notes outstanding on September 30, 2006 and December 31, 2005,
     respectively.  During 2006,  holders converted $73 million principal amount
     of the Convertible Notes. See Note E for additional  information  regarding
     the 2006 conversions.



NOTE K.     Geographic Operating Segment Information

     The Company has operations in only one industry segment, that being the oil
and  gas  exploration  and  production   industry;   however,   the  Company  is
organizationally  structured along geographic operating segments or regions. The
Company has reportable  operations in the United  States,  Canada and Africa and
Other.  Africa and Other is primarily comprised of current or past operations in
Equatorial Guinea, Gabon, Morocco, Nigeria, South Africa and Tunisia.

     As previously referred to in Note B, during 2005, the Company sold Canadian
and United States oil and gas properties having carrying values of $58.9 million
and $31.4  million,  respectively,  on their dates of sale.  Also as  previously
referred to in Note B, during 2006, the Company sold Argentine assets and United
States oil and gas properties  having  carrying  values,  including net deferred
hedge losses, of $658.7 million and $431.6 million, respectively. The results of
operations of those properties have been reclassified as discontinued operations
in  accordance  with SFAS 144 and are  excluded  from the  geographic  operating
segment  information  provided below.  See Note N for information  regarding the
Company's discontinued operations.

                                       27





                        PIONEER NATURAL RESOURCES COMPANY

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                               September 30, 2006
                                   (Unaudited)


     The following  tables provide the Company's  interim  geographic  operating
segment  data for the three and nine months ended  September  30, 2006 and 2005.
Geographic  operating  segment  income  tax  benefits   (provisions)  have  been
determined  based on statutory  rates existing in the various tax  jurisdictions
where the Company has oil and gas producing activities. The "Headquarters" table
column  includes  income and  expenses  that are not  routinely  included in the
earnings measures  internally  reported to management on a geographic  operating
segment basis.



                                       28







                        PIONEER NATURAL RESOURCES COMPANY

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                               September 30, 2006
                                   (Unaudited)




                                         United                         Africa                        Consolidated
                                         States          Canada        and Other      Headquarters        Total
                                       ----------      ----------     ----------      ------------    ------------
                                                                    (in thousands)
                                                                                       
Three months ended
  September 30, 2006:

Revenues and other income:
  Oil and gas                          $  346,295      $   33,993     $   37,818      $        -      $  418,106
  Interest and other..............              -               -              -          15,229          15,229
  Loss on disposition of assets,
    net...........................           (601)              -              -            (107)           (708)
                                       ----------       ---------     ----------      ----------      ----------
                                          345,694          33,993         37,818          15,122         432,627
                                       ----------       ---------     ----------      ----------      ----------
Costs and expenses:
  Oil and gas production..........         83,905          14,283          4,781               -         102,969
  Depletion, depreciation
     and amortization.............         74,269          12,488          2,245           6,286          95,288
  Exploration and abandonments....         32,456           2,814          8,550               -          43,820
  General and administrative......              -               -              -          30,421          30,421
  Accretion of discount of asset
     retirement obligations.......              -               -              -           1,168           1,168
  Interest........................              -               -              -          23,586          23,586
  Other...........................              -               -              -          14,779          14,779
                                       ----------       ---------     ----------      ----------      ----------
                                          190,630          29,585         15,576          76,240         312,031
                                       ----------       ---------     ----------      ----------      ----------
  Income (loss) from continuing
     operations before income
     taxes........................        155,064           4,408         22,242         (61,118)        120,596
  Income tax benefit (provisions).        (56,599)         (1,066)       (15,742)         33,137         (40,270)
                                       ----------       ---------     ----------      ----------      ----------
  Income (loss) from continuing
     operations...................     $   98,465      $    3,342     $    6,500      $  (27,981)     $   80,326
                                       ==========      ==========     ==========       =========      ==========
Three months ended
  September 30, 2005:

Revenues and other income:
  Oil and gas.....................     $  307,134      $   29,571     $   52,974      $        -      $  389,679
  Interest and other..............              -               -              -           7,885           7,885
  Gain on disposition of assets,
     net..........................            290               -              -              85             375
                                       ----------       ---------     ----------      ----------      ----------
                                          307,424          29,571         52,974           7,970         397,939
                                       ----------       ---------     ----------      ----------      ----------
Costs and expenses:
  Oil and gas production..........         74,594           9,766          8,449               -          92,809
  Depletion, depreciation
     and amortization.............         54,874           8,988          6,796           5,178          75,836
  Impairment of long-lived assets.              -               -             21               -              21
  Exploration and abandonments....         46,757           1,405          8,202               -          56,364
  General and administrative......              -               -              -          29,817          29,817
  Accretion of discount of asset
     retirement obligations.......              -               -              -           1,094           1,094
  Interest........................              -               -              -          28,862          28,862
  Other...........................              -               -              -          34,185          34,185
                                       ----------       ---------     ----------      ----------      ----------
                                          176,225          20,159         23,468          99,136         318,988
                                       ----------       ---------     ----------      ----------      ----------
  Income (loss) from continuing
     operations before income
     taxes........................        131,199           9,412         29,506         (91,166)         78,951
  Income tax benefit (provisions).        (47,887)         (3,435)       (10,905)         44,789         (17,438)
                                       ----------       ---------     ----------      ----------      ----------
  Income (loss) from continuing
     operations...................     $   83,312      $    5,977     $   18,601      $  (46,377)     $   61,513
                                       ==========      ==========     ==========      ==========      ==========


                                       29





                        PIONEER NATURAL RESOURCES COMPANY

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                               September 30, 2006
                                   (Unaudited)




                                         United                         Africa                        Consolidated
                                         States          Canada        and Other      Headquarters        Total
                                       ----------      ----------     ----------      ------------    ------------
                                                                    (in thousands)
                                                                                       
Nine months ended
  September 30, 2006:

Revenues and other income:
  Oil and gas.....................     $  987,388      $   96,509     $  121,247       $        -     $ 1,205,144
  Interest and other..............              -               -              -           42,081          42,081
  Gain (loss) on disposition of
     assets, net..................           (451)             77              -           (3,810)         (4,184)
                                       ----------      ----------     ----------       ----------     -----------
                                          986,937          96,586        121,247           38,271       1,243,041
                                       ----------      ----------     ----------       ----------     -----------
Costs and expenses:
  Oil and gas production..........        245,366          35,977         19,375                -         300,718
  Depletion, depreciation
    and amortization..............        205,190          32,156         10,680           17,652         265,678
  Exploration and abandonments....        139,072           9,410         61,598                -         210,080
  General and administrative......              -               -              -           92,136          92,136
  Accretion of discount of asset
    retirement obligations........              -               -              -            3,470           3,470
  Interest........................              -               -              -           82,928          82,928
  Other...........................              -               -              -           31,592          31,592
                                       ----------      ----------     ----------       ----------     -----------
                                          589,628          77,543         91,653          227,778         986,602
                                       ----------      ----------     ----------       ----------     -----------
  Income (loss) from continuing
    operations before income
    taxes.........................        397,309          19,043         29,594         (189,507)        256,439
  Income tax benefit (provisions).       (145,018)         (6,279)       (14,089)          54,192        (111,194)
                                       ----------      ----------     ----------       ----------     -----------
  Income (loss) from continuing
    operations....................     $  252,291      $   12,764     $   15,505       $ (135,315)    $   145,245
                                       ==========      ==========     ==========       ==========     ===========

Nine months ended
  September 30, 2005:

Revenues and other income:
  Oil and gas.....................     $  810,255      $   73,620     $  149,967       $        -     $ 1,033,842
  Interest and other..............              -               -              -           21,936          21,936
  Gain on disposition of assets,
     net..........................          2,322               -              -              303           2,625
                                       ----------      ----------      ---------       ----------     -----------
                                          812,577          73,620        149,967           22,239       1,058,403
                                       ----------      ----------      ---------       ----------     -----------
Costs and expenses:
  Oil and gas production..........        202,174          27,370         23,849                -         253,393
  Depletion, depreciation
    and amortization..............        153,688          23,429         23,434           14,592         215,143
  Impairment of long-lived assets               -               -            644                -             644
  Exploration and abandonments....         98,984           7,828         40,879                -         147,691
  General and administrative......              -               -              -           83,901          83,901
  Accretion of discount of asset
    retirement obligations........              -               -              -            3,183           3,183
  Interest........................              -               -              -           91,011          91,011
  Other...........................              -               -              -           58,739          58,739
                                       ----------      ----------      ---------       ----------     -----------
                                          454,846          58,627         88,806          251,426         853,705
                                       ----------      ----------      ---------       ----------     -----------
  Income (loss) from continuing
    operations before income
    taxes.........................        357,731          14,993         61,161         (229,187)        204,698
  Income tax benefit (provisions).       (130,571)         (5,472)       (21,440)          64,249         (93,234)
                                       ----------      ----------      ---------       ----------     -----------
  Income (loss) from continuing
    operations....................     $  227,160      $    9,521      $  39,721       $ (164,938)    $   111,464
                                       ==========      ==========      =========       ==========     ===========



                                       30






                        PIONEER NATURAL RESOURCES COMPANY

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                               September 30, 2006
                                   (Unaudited)



                               United                                     Africa                        Consolidated
                               States        Argentina      Canada       and Other     Headquarters        Total
                             -----------     ---------     ---------     ---------     ------------     ------------
                                                      (in thousands)
                                                                                      
Segment assets (as of
  September 30, 2006)...     $ 6,080,674     $       -     $ 541,695     $ 251,926      $  123,990      $ 6,998,285
                             ===========     =========     =========     =========      ==========      ===========
Segment assets (as of
  December 31, 2005)....     $ 5,899,637     $ 735,191     $ 363,773     $ 170,484      $  160,149      $ 7,329,234
                             ===========     =========     =========     =========      ==========      ===========


NOTE L.     Volumetric Production Payments

     During  2005,  the Company  sold 27.8 MMBOE of proved  reserves by means of
three  VPP  agreements  for  net  proceeds  of  $892.6  million,  including  the
assignment  of  the  Company's   obligations  under  certain   derivative  hedge
agreements.  Proceeds from the VPPs were  initially  used to reduce  outstanding
indebtedness.  The  first  VPP  sold  58 Bcf of gas  volumes  over  an  expected
five-year  term that began in February  2005. The second VPP sold 10.8 MMBbls of
oil volumes over an expected  seven-year  term that began in January  2006.  The
third VPP sold 6.0 Bcf of gas volumes over an expected  32-month term that began
in May 2005 and 6.2 MMBbls of oil volumes over an expected  five-year  term that
began in January 2006.

     The Company's VPPs represent  limited-term  overriding royalty interests in
oil and gas reserves  which:  (i) entitle the  purchaser  to receive  production
volumes over a period of time from specific lease  interests;  (ii) are free and
clear of all associated future production costs and capital expenditures;  (iii)
are nonrecourse to the Company (i.e.,  the  purchaser's  only recourse is to the
assets  acquired);  (iv)  transfer  title to the  purchaser;  and (v)  allow the
Company to retain  the assets  after the VPPs  volumetric  quantities  have been
delivered.

     Under SFAS No.  19,  "Financial  Accounting  and  Reporting  by Oil and Gas
Producing  Companies,"  a VPP is  considered  a sale of  proved  reserves.  As a
result,  the Company (i) removed the proved  reserves  associated with the VPPs;
(ii)  recognized the VPP proceeds as deferred  revenue which are being amortized
on a  unit-of-production  basis to oil and gas  revenues  over the  terms of the
VPPs; (iii) retained  responsibility for 100 percent of the production costs and
capital costs related to VPP interests; and (iv) no longer recognizes production
associated with the VPP volumes.

     The  following  table  provides  information  about  the  deferred  revenue
carrying values of the Company's VPPs:


                                                        Gas                 Oil                 Total
                                                    -----------         ------------         -----------
                                                                       (in thousands)
                                                                                    
    Deferred revenue at December 31, 2005.....      $   249,323         $    605,515         $   854,838
    Less 2006 amortization....................          (56,074)             (87,157)           (143,231)
                                                    -----------         ------------         -----------
      Deferred revenue at September 30, 2006..      $   193,249         $    518,358         $   711,607
                                                    ===========         ============         ===========

     The  above  deferred  revenue  amounts  will be  recognized  in oil and gas
revenues in the Consolidated  Statements of Operations as noted below,  assuming
the related VPP production volumes are delivered as scheduled (in thousands):


                                                 
              Remaining 2006........................   $     47,096
              2007..................................        181,232
              2008..................................        158,138
              2009..................................        147,906
              2010..................................         90,215
              2011..................................         44,951
              2012..................................         42,069
                                                        -----------
                                                        $   711,607
                                                        ===========



                                       31






                        PIONEER NATURAL RESOURCES COMPANY

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                               September 30, 2006
                                   (Unaudited)


NOTE M.     Insurance Claims

     Fain Plant. During May 2005, the Company sustained damages as a result of a
fire at its Fain gas plant in the West Panhandle field. The damages  interrupted
production  from  mid-May  through  mid-July  of 2005.  The  Company  maintained
business   interruption  and  physical  damage   insurance   coverage  for  such
circumstances.  The  Company  recognized  a total of $17.9  million in  business
interruption   recoveries  and  $4.4  million  in  physical  damage   recoveries
associated with the Fain gas plant fire. The Company recognized $14.2 million of
the business  interruption  recoveries  in 2005 and the  remaining  $3.7 million
during  the first  quarter of 2006,  which is  included  in other  income in the
Company's accompanying Consolidated Statements of Operations.

     Hurricanes  Katrina and Rita. During August and September 2005, the Company
sustained  damages  as a  result  of  Hurricanes  Katrina  and  Rita at  various
facilities in the Gulf of Mexico. Other than the East Cameron facility discussed
further  below,  the damages to the facilities  were covered by physical  damage
insurance.

     The Company filed a business interruption claim with its insurance provider
related  to its  Devils  Tower  field  resulting  from  its  inability  to  sell
production as a result of damages to third-party  facilities.  During the second
quarter of 2006, the Company  settled its business  interruption  claim with its
insurance  provider  for  $18.5  million,  which  is  included  in  income  from
discontinued operations in the Company's accompanying Consolidated Statements of
Operations.

     As a result of Hurricane  Rita,  the  Company's  East Cameron  facility was
destroyed  and the Company  does not plan to rebuild the  facility  based on the
economics  of the  field.  Assuming  that the  Company  will be able to "reef" a
substantial  portion of East Cameron debris in place, the Company estimates that
it will cost  approximately  $86 million to reclaim and abandon the East Cameron
facility,  based upon an analysis  and fee  proposal  prepared by a  third-party
engineering  firm.  During the first  quarter of 2006,  the Company  recorded an
additional  abandonment  obligation  charge of $42 million  which is included in
exploration and  abandonments  in the  accompanying  Consolidated  Statements of
Operations to fully accrue the estimated reclamation and abandonment charges. If
the  Company is unable to reef a  substantial  portion  of debris in place,  the
total  costs  to  reclaim  and  abandon  the  East   Cameron   facility  may  be
substantially  more than the $86 million  estimate  that has been  accrued as of
September 30, 2006. The Company  believes that any additional costs incurred due
to an inability to reef the debris  would be covered by  insurance.  The Company
updated  its  application  to reef the  debris in place  and filed the  modified
application with the appropriate  regulatory  agency during the third quarter of
2006. The Company expects to have more clarity around its reefing application by
the end of the fourth quarter of 2006.

     The Company has filed a claim with its  insurance  provider  regarding  the
loss at East Cameron.  Under the Company's  insurance  policy,  the East Cameron
facility had the  following  coverages:  (a) $14 million of  scheduled  property
value for the  platform,  (b) $4  million  of  scheduled  business  interruption
insurance after a deductible waiting period, (c) in excess of a $100 million for
debris  removal  coverage for all assets per  occurrence and (d) $100 million of
"make well safe" coverage, in total, for all assets per occurrence.

     In December 2005, the Company received the $14 million  scheduled value for
the East Cameron  assets and recognized a gain of $9.7 million during the fourth
quarter of 2005. The Company received the $4.0 million of business  interruption
recoveries  during the first  quarter of 2006.  The  Company  believes  that its
debris removal and make well safe coverages, in combination,  will substantially
cover the costs to  abandon  the East  Cameron  facility.  The  Company  has not
recorded any  estimated  recoveries  related to insurance  due to  uncertainties
around the final amount of the deductible related to the claim.


                                       32








                        PIONEER NATURAL RESOURCES COMPANY

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                               September 30, 2006
                                   (Unaudited)


NOTE N.     Discontinued Operations

     During 2005 and 2006,  the Company sold its  interests in the following oil
and gas assets:



      Country             Description of Assets              Date Divested        Net Proceeds           Gain
      -------             ---------------------              -------------        ------------         ----------
                                                                                          (in millions)
                                                                                        
      Canada              Martin Creek, Conroy Black
                          and Lookout Butte fields           May 2005             $   197.2            $   138.3

      United States       Two Gulf of Mexico shelf           August 2005          $    59.2            $    27.9
                          fields

      United States       Deepwater Gulf of Mexico           March 2006           $ 1,156.3 (a)        $   724.7
                          fields

      Argentina           Argentine assets                   April 2006           $   669.6            $    10.9


-----------
(a)  Net  proceeds  do not  reflect  the cash  payment  of  $193.2  million  for
     terminated hedges associated with the deepwater Gulf of Mexico assets.



     Pursuant to SFAS 144, the Company has  reflected  the results of operations
of the above divestitures as discontinued operations, rather than as a component
of continuing  operations.  The following table represents the components of the
Company's discontinued  operations for the three and nine months ended September
30, 2006 and 2005:



                                                     Three months ended             Nine months ended
                                                        September 30,                  September 30,
                                                  -------------------------     -------------------------
                                                     2006           2005           2006           2005
                                                  ----------     ----------     ----------     ----------
                                                                       (in thousands)
                                                                                   
Revenues and other income:
  Oil and gas................................     $     (312)    $  175,140     $  199,365     $  603,497
  Interest and other.........................          1,959          1,575         23,217         63,753
  Gain on disposition of assets..............          2,989         27,494        735,773        166,274
                                                  ----------     ----------     ----------     ----------
                                                       4,636        204,209        958,355        833,524
                                                  ----------     ----------     ----------     ----------
Costs and expenses:
  Oil and gas production.....................             22         28,319         31,264         91,923
  Depletion, depreciation and
     amortization............................              -         61,975         37,327        227,828
  Exploration and abandonments...............            122          7,742          7,327         36,221
  General and administrative.................             78          2,933          9,047          7,783
  Accretion of discount on asset
    retirement obligation....................              -            874            804          3,027
  Interest...................................              -            406            460          1,720
  Other......................................          4,239          3,988          5,951          8,736
                                                  ----------     ----------     ----------     ----------
                                                       4,461        106,237         92,180        377,238
                                                  ----------     ----------     ----------     ----------
Income from discontinued operations
  before income taxes........................            175         97,972        866,175        456,286
Income tax benefit (provision):
  Current....................................           (412)         1,056       (152,987)        (6,833)
  Deferred...................................            710        (36,968)      (146,388)      (167,128)
                                                  ----------     ----------     ----------     ----------
Income from discontinued operations,
  net of tax ................................     $      473     $   62,060     $  566,800     $  282,325
                                                  ==========     ==========     ==========     ==========




                                       33





                        PIONEER NATURAL RESOURCES COMPANY

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                               September 30, 2006
                                   (Unaudited)


     The Company has provided  the  purchaser of its  Argentine  assets  certain
indemnifications  and remains  responsible for certain  contingent  liabilities,
subject to defined  limitations.  The Company  does not  currently  believe that
these   obligations,   which   primarily   pertain  to  matters  of  litigation,
environmental contingencies,  royalty obligations and income taxes, are probable
of having a  material  impact on its  liquidity,  financial  position  or future
results of operations.



                                       34






                        PIONEER NATURAL RESOURCES COMPANY


Item 2.     Management's Discussion and Analysis of Financial Condition and
            Results of Operations

Financial and Operating Performance

     The Company's financial and operating  performance for the third quarter of
2006 included the following highlights:

o    The recognition of income from continuing operations of $80.3 million ($.64
     per  diluted  share) for the third  quarter of 2006,  as  compared to $61.5
     million ($.44 per diluted share) for the third quarter of 2005.
o    The recognition of third quarter 2006 net income of $80.8 million ($.64 per
     diluted share),  as compared to $123.6 million ($.88 per diluted share) for
     the third  quarter of 2005.  The decrease in net income is  reflective of a
     $61.6 million ($.44 per diluted share) decrease in income from discontinued
     operations, which is due to the sale of two of the Company's Gulf of Mexico
     shelf fields  during  August 2005 and  substantially  all of the  Company's
     deepwater Gulf of Mexico and Argentine  assets during March and April 2006,
     respectively.
o    A reduction in net cash provided by operating  activities to $182.7 million
     for the third quarter of 2006 from $309.8  million during the third quarter
     of 2005.  The  reduction in net cash provided by operating  activities  was
     primarily due to operations  discontinued  during 2005 and 2006,  partially
     offset by increases in oil and gas sales from continuing operations.
o    During the third quarter of 2006, the Company extended the maturity on $1.4
     billion of its $1.5 billion loan commitments  under the Credit Agreement by
     one year.
o    A reduction in outstanding  debt of $863.9  million,  or 42 percent,  as of
     September 30, 2006 as compared to debt outstanding as of December 31, 2005,
     resulting in a decrease in the Company's debt to book  capitalization to 29
     percent at September 30, 2006 from 48 percent at December 31, 2005.
o    During the third  quarter of 2006,  the  Company  repurchased  3.1  million
     shares of its common stock at an aggregate cost of $124.4 million.  Through
     the nine months ended  September 30, 2006, the Company has  repurchased 7.5
     million shares of its common stock at an aggregate cost of $294.2  million.
     The  Company  had  approximately  $65  million of  remaining  purchases  to
     complete under its $1 billion share repurchase  program as of September 30,
     2006.
o    The August 25  declaration  of a $.13 per  common  share  dividend  payable
     October 12, 2006 to  shareholders  of record on September  28,  2006.  This
     declaration  represented  the  second  consecutive  year  during  which the
     Company has increased its dividends on common stock.

Fourth Quarter 2006 Outlook

     Based on current  estimates,  the Company  expects that fourth quarter 2006
production  will  average  98,000 to 103,000  BOEPD.  The lower end of the range
reflects the typical  variability in the timing of oil cargo  shipments in South
Africa and Tunisia.

     Fourth quarter production costs (including  production and ad valorem taxes
and transportation costs) are expected to average $11.00 to $12.00 per BOE based
on current  NYMEX  strip  prices for oil and gas.  DD&A  expense is  expected to
average $10.00 to $11.00 per BOE.

     Total exploration and abandonment  expense is expected to be $45 million to
$110 million and could  include (i) $15 million to $30 million  attributable  to
the unsuccessful  Flying Cloud exploration well (deepwater Gulf of Mexico) and a
well currently drilling to test the Mississippi  Norphlet play, (ii) $45 million
related to activities in the Edwards Trend,  Uinta/Piceance  basins,  Canada and
Tunisia  resource  plays,  and associated  acreage  abandonments,  and (iii) $30
million to $35 million for seismic investments and personnel,  primarily related
to the  onshore  resource  plays  Pioneer is  currently  pursuing.  General  and
administrative  expense is expected to be $29 million to $33  million.  Interest
expense is expected to be $24 million to $28 million. Interest income, primarily
from cash investments,  is expected to be $1 million to $3 million. Accretion of
discount on asset retirement obligations is expected to be $1 million to $2
million.

                                       35





                        PIONEER NATURAL RESOURCES COMPANY


     The Company's fourth quarter effective income tax rate is expected to range
from 35 percent to 45 percent  based on current  capital  spending  plans.  Cash
income taxes are  expected to range from $5 million to $15 million,  principally
related to Tunisian income taxes.

Acquisitions, Divestments, Operations and Drilling Highlights

     During  the  first  nine  months  of  2006,   the  Company   completed  the
divestitures  of certain of its  deepwater  Gulf of Mexico  assets and Argentine
assets. Additionally, during 2005, the Company sold its interests in certain oil
and gas  properties  on the shelf of the Gulf of Mexico  and  certain  fields in
Canada.  Operating  results and the related gains on  disposition of assets from
these divestitures are reported as discontinued operations.  See Note N of Notes
to Consolidated  Financial Statements included in "Item 1. Financial Statements"
for additional information regarding the Company's discontinued operations.

     During the first nine months of 2006, the Company  incurred $1.1 billion in
finding  and  development   costs  including   $646.4  million  for  development
activities,  $334.8  million for  exploration  activities and $155.9 million for
acquisitions and land. The majority of the Company's development and exploration
expenditures   were  spent  on  drilling  wells,   acquiring  seismic  data  and
constructing infrastructure associated with successful drilling activities.

       The following table summarizes by geographic area the Company's finding
and development costs incurred, excluding asset retirement obligations, during
the first nine months of 2006 and the total wells planned to be drilled during
the year ending December 31, 2006:



                              Acquisition Costs                                                  2006
                            --------------------    Exploration    Development                   Wells
                             Proved     Unproved       Costs          Costs         Total       Planned
                            --------    --------    -----------    -----------    ----------    -------
                                                              ($ in thousands)
                                                                              
United States:
   Gulf of Mexico (a)..     $      -    $     10     $   76,144     $   8,621     $   84,775          3
   Onshore Gulf Coast..       11,914      28,116         50,449        31,441        121,920         57
   Permian Basin.......       38,476      23,681          6,740       190,541        259,438        335
   Mid-Continent.......          103           -            140        21,159         21,402         16
   Rocky Mountains.....           61       6,797         32,861       130,473        170,192        387
   Alaska..............        6,000       7,918         26,656        78,042        118,616          3
                            --------    --------     ----------     ---------     ----------     ------
                              56,554      66,522        192,990       460,277        776,343        801
                            --------    --------     ----------     ---------     ----------     ------
Argentina (a)..........            -           2         10,223        25,543         35,768          -
Canada.................           27      19,801         80,790        75,817        176,435        271
Nigeria................            -       8,034         25,055             -         33,089          1
South Africa...........            -           -            163        84,977         85,140          5
Tunisia................            -       5,000         18,601          (233)        23,368          7
Other..................            -           -          6,998             -          6,998          -
                            --------    --------     ----------     ---------     ----------     ------
                                  27      32,837        141,830       186,104        360,798        284
                            --------    --------     ----------     ---------     ----------     ------
   Total Worldwide.....     $ 56,581    $ 99,359     $  334,820     $ 646,381     $1,137,141      1,085
                            ========    ========     ==========     =========     ==========     ======

-----------
(a)  Approximately  $8.2 million of the finding and  development  costs incurred
     are associated  with the divested  deepwater  Gulf of Mexico  assets;  and,
     $35.8  million are  associated  with the  divested  Argentine  assets.  The
     Company's  $1.4 billion 2006 capital  budget does not include (i) the costs
     incurred  on  the  divested  deepwater  Gulf  Mexico  assets  or any of the
     Argentine  assets,  because the Company was in the process of selling those
     assets  when the budget was  prepared;  (ii)  capitalized  interest,  which
     totaled $6.6 million to date in 2006; and (iii)  geological and geophysical
     personnel costs, which totaled $31.6 million to date in 2006.



                                       36





                        PIONEER NATURAL RESOURCES COMPANY


     The   following   table   summarizes   the   Company's    development   and
exploration/extension  drilling  activities for the nine months ended  September
30, 2006:



                                                         Development Drilling
                          --------------------------------------------------------------------------------
                           Beginning                                                            Ending
                             Wells        Wells     Successful    Unsuccessful    Disposed      Wells
                          in Progress     Spud         Wells           Wells       Wells      in Progress
                          -----------    -------    ----------    ------------    --------    -----------

                                                                            
United States........           29           468          474             6             -          17
Argentina............            2            21           14             1             8           -
Canada...............            3             2            2             -             -           3
Africa...............            -             4            1             -             -           3
                             -----       -------      -------        ------        ------       -----
 Total Worldwide.....           34           495          491             7             8          23
                             =====       =======      =======        ======        ======       =====





                                                    Exploration/Extension Drilling
                          --------------------------------------------------------------------------------
                           Beginning                                                            Ending
                             Wells        Wells     Successful    Unsuccessful    Disposed      Wells
                          in Progress     Spud         Wells           Wells       Wells      in Progress
                          -----------    -------    ----------    ------------    --------    -----------

                                                                            
United States........            7            50           32             5             -          20
Argentina............            4             6            4             2             4           -
Canada...............          109           179          243             8             -          37
Africa...............            3             5            1             2             -           5
                             -----       -------      -------        ------        ------       -----
 Total Worldwide.....          123           240          280            17             4          62
                             =====       =======      =======        ======        ======       =====


     Gulf of Mexico area. During October 2005, the Company announced a discovery
on its Clipper  prospect in the Green Canyon Blocks 299 and 300 in the deepwater
Gulf of Mexico.  The Company  expects to develop the  Clipper  discovery  and is
currently evaluating sub-sea tie-back options to third party production handling
facilities in the area. Pioneer operates the Clipper discovery with a 55 percent
working  interest.  During  2006,  the Company  drilled two  successful  Clipper
appraisal  wells,  but drilled an  unsuccessful  exploratory  well at the Flying
Cloud prospect, a prospect near the Clipper discovery.

     As a result of Hurricane  Rita,  the  Company's  East Cameron  facility was
destroyed  and the Company  does not plan to rebuild the  facility  based on the
economics  of the  field.  Assuming  that the  Company  will be able to "reef" a
substantial  portion of East Cameron debris in place, the Company estimates that
it will cost  approximately  $86 million to reclaim and abandon the East Cameron
facility,  based upon an analysis  and fee  proposal  prepared by a  third-party
engineering  firm.  During the first  quarter  of 2006 and the third  quarter of
2005, the Company recorded  additional  abandonment  obligation charges of $42.0
million  and  $32.8  million,  respectively,   which  amounts  are  included  in
exploration and  abandonments  in the  accompanying  Consolidated  Statements of
Operations.  If the Company is unable to reef a substantial portion of debris in
place,  the total costs to reclaim and abandon the East Cameron  facility may be
substantially  more than the $86 million  estimate  that has been  accrued as of
September 30, 2006.  The Company  updated its  application to reef the debris in
place and filed the modified application with the appropriate  regulatory agency
during  the third  quarter of 2006.  The  Company  expects to have more  clarity
around its reefing  application  by the end of the fourth  quarter of 2006.  The
Company expects a substantial  portion of the loss and any  incremental  cost if
the Company is unable to reef the debris in place to be covered by insurance.

     Pioneer is currently  pursuing the  divestment  of its Gulf of Mexico shelf
properties.  No assurance can be given that Pioneer and any potential  purchaser
will reach an agreement on final terms or that a sale will be consummated.

                                       37






                        PIONEER NATURAL RESOURCES COMPANY


     Onshore Gulf Coast area. In South Texas,  the Company has five rigs working
in the Edwards  Trend and expects to add another rig in early 2007.  The Company
has 245,000  gross acres under lease and  continues  to develop its Pawnee field
while expanding the potential of the trend by drilling exploration and appraisal
wells on new field  prospects.  The Company  drilled a new discovery  during the
third quarter of 2006 and has drilled six  discoveries  to date in 2006. Two new
processing  facilities  were also added  during the third  quarter of 2006.  The
Company  has tied in five new  discovery  wells  which are  currently  producing
approximately  6  MMcfpd,  and has  twelve  Edwards  expansion  wells  currently
drilling  or waiting to be tied in to  pipelines,  including  two wells that are
expected to begin producing in early November, which tested at approximately 3.5
MMcfpd each.

     During  the  fourth  quarter  of 2006,  the  Company  plans to test one new
prospect and drill five appraisal wells and four development wells. In addition,
approximately  850 square  miles of 3-D  seismic  data will be  acquired  on new
discoveries  in South  Texas  through  2007 to  support  new  field  development
drilling which is expected to be initiated mid-2007.

     The Company has acquired  and  continues  to acquire  acreage  positions in
Mississippi for its Norphlet and Cotton Valley  resource  plays.  The Company is
currently drilling Norphlet and Cotton Valley test wells and expects to know the
well results by the end of 2006.

     Permian Basin area. During 2006, the Company expects to drill approximately
335 wells,  which is an increase of  approximately 78 percent over the number of
wells  drilled in the area  during  2005 and by almost 200  percent  relative to
average annual wells drilled over the past five years.  The Company has acquired
over  90,000  additional  gross acres in the area during 2006 and is drilling to
the deeper Wolfcamp  formations in the majority of wells in the Spraberry field,
resulting in incremental production and proved reserves.

     Mid-Continent  area.  The  Company's  2006  drilling  plans  are  primarily
comprised  of  drilling  development  wells in the  Hugoton  and West  Panhandle
fields. Pioneer is pursuing regulatory relief in the West Panhandle to allow for
additional future drilling locations.

     Rocky  Mountain  area.  In the Raton Basin,  production  is increasing as a
result  of a  pipeline  expansion  that  was  completed  in  October  2005  plus
additional   field  and   wellhead   compression.   Pioneer   expects  to  drill
approximately  330 wells in the  Raton  field  during  2006.  Additionally,  the
Company  intends to  continue  efforts  during 2006 to  optimize  gathering  and
compression facilities in the area.

     In  northwest  Colorado,  the  Company's  programs to evaluate  the coalbed
methane  ("CBM")  resource  potential  at Lay Creek and  Columbine  Springs  are
progressing.  At Lay Creek,  the  Company  has  drilled  six pilot  wells in two
separate pilot areas and completed workovers and recompletions on fourteen wells
drilled by the previous  operator.  Results to date  indicate that the coals are
thicker than expected. During the fourth quarter of 2006, Pioneer plans to drill
additional pilot wells and development  wells and install the  infrastructure to
initiate sales by the end of 2006. At Columbine  Springs,  the Company completed
its extension pilot program and put these wells and existing wells to production
during third quarter of 2006 to assess production  potential and  water-handling
requirements.  If the CBM projects are determined to have commercial  quantities
of gas,  full-field  development  could begin in both areas in 2007. The Company
also plans to drill  additional  wells to further  evaluate its resource play at
Castlegate  and to test its  conventional  Entrada  gas play,  both in the Uinta
Basin in Utah.

     Alaska area.  The Company's  2005-2006  winter  drilling  season program in
Alaska included three exploratory  wells (Hailstorm,  Cronus and Antigua) in the
Central  North Slope area where  Pioneer and its partners  tested  multiple play
types that were  close to  existing  infrastructure.  The  Company's  Arctic Fox
drilling rig was  utilized for the  three-well  program.  All three  exploratory
wells were determined to be unsuccessful.

     In June 2006, the Company  exercised its option to acquire an additional 40
percent working interest, for a total current working interest of 50 percent, in
the  Cosmopolitan  Unit.  Pioneer was also elected  operator of the Cosmopolitan
Unit.  The  Company  expects  to drill an  appraisal  well to test the  previous
Cosmopolitan discovery during 2007.

                                       38





                        PIONEER NATURAL RESOURCES COMPANY


     On the Oooguruk  project,  the Company  continues to procure  equipment and
services,  fabricate  equipment  and modify a drilling rig for  installation  in
2007.  Development drilling on the project is expected to begin in late 2007 and
first  production is expected in 2008. In addition,  during the 2006-2007 winter
drilling season the Company plans to drill two exploratory wells in the National
Petroleum Reserve - Alaska area.

     Canada.  The Company's current  operations are focused upon CBM projects in
the Horseshoe Canyon area. In the Horseshoe Canyon area, the Company has drilled
85 wells through October 2006 and expects to complete and commence production on
approximately  120 wells by the end of the  fourth  quarter of 2006 and to place
approximately  55 additional  wells on production in early 2007. The Company has
completed its 2006  Chinchaga area drilling  program.  The Company has completed
drilling its three  Mannville  CBM pilot  projects  and is currently  production
testing  the  projects  to  determine  if  commercial  quantities  of gas can be
produced.

     West Africa.  During the first quarter of 2006, the Company participated in
the  drilling  of the Pina 1-X well on Block 256 in the  deepwater  of  Nigeria,
which was  unsuccessful.  As a result,  the  Company  recorded a charge of $34.0
million for the dry hole cost and related acreage impairment.  The Company has a
25  percent  working  interest  in the  block.  The  partners  plan to  drill an
additional well on Block 256 in 2007 to test a different play type.

     In  2005,  a  partially-owned  subsidiary  of  the  Company  joined  Oranto
Petroleum and Orandi  Petroleum in an existing  production  sharing  contract on
Block 320 in  deepwater  Nigeria to gain  exploration  rights from the  Nigerian
National  Petroleum  Corporation.  The  subsidiary,  which  holds  a 51  percent
interest  in Block 320,  is owned 59 percent by the Company and 41 percent by an
unaffiliated  party.  The Company  acquired 3-D seismic data  covering the block
during the fourth quarter of 2005 and the first quarter of 2006 and is currently
evaluating  the  data.  The  Company's  subsidiary  plans  to  drill  the  first
exploration well on the block during late 2007 or early 2008.

     In  addition,  the  Company  expects  to drill a well on  Block H  offshore
Equatorial  Guinea in 2007. The Company holds a 50 percent  working  interest in
the block.

     The Company has been  evaluating  alternatives to reduce its future capital
commitments  for its West Africa  assets,  including the possible  divestment of
such assets.  In that regard,  the Company has retained a third party adviser to
assist it in  marketing  the assets  and has opened a data room,  which has been
visited by a number of potential purchasers. The Company expects that any offers
to purchase  the  properties  will be received  during the fourth  quarter.  Any
purchase  would likely be subject to the approvals of the relevant  governmental
authorities.  No assurance  can be given that any  potential  purchaser  will be
willing to purchase  the  properties  on terms  acceptable  to Pioneer or, if an
agreement is reached, that governmental approval will be obtained.

     South  Africa.  During the first nine  months of 2006,  the Company and its
partner  drilled  three  wells and plans to  continue  drilling  the  additional
development wells to develop the gas and condensate  fields discovered  offshore
South   Africa.   The  Company  also   invested   $51.7  million  in  facilities
infrastructure  and design work, with  installation  expected to commence at the
end of 2006.  First  production  from the South Coast Gas project is expected in
the second half of 2007.

     Tunisia. In the Adam Concession,  the Company spudded three appraisal wells
during 2006, of which the Adam 4 and Hawa 3 wells were successful and the Adam 5
was  unsuccessful  and  expensed  as a dry hole  during  the third  quarter.  An
additional  exploration well is planned in the Adam Concession during the fourth
quarter of 2006. In 2006,  the  Company's  interest in the Adam  Concession  was
reduced  from 24  percent  to 20  percent  in  accordance  with the terms of the
concession.  On the  adjacent  Jenein  Nord  block,  the  Company  acquired  the
remaining equity interest it did not already own in February 2006,  becoming the
operator  of the block with 100  percent  working  interest.  During  2006,  the
Company  completed a 3-D  seismic  survey on both the Jenein Nord block and Adam
Concession.  The Company began drilling the Waha 1 well on the Jenein Nord block
during the third quarter of 2006 and expects to drill one additional well on the
Jenein Nord block  during the fourth  quarter of 2006.  Also,  a well is planned
during the fourth quarter of 2006 on the Borj El Khadra block, which is adjacent
to the Adam Concession.

                                       39





                        PIONEER NATURAL RESOURCES COMPANY


Results of Operations

     Oil and gas  revenues.  Oil and gas  revenues  from  continuing  operations
totaled  $418.1  million and $1.2  billion for the three and nine month  periods
ended September 30, 2006,  respectively,  as compared to $389.7 million and $1.0
billion for the same respective periods of 2005.

     The increase in oil and gas revenues from continuing  operations during the
three months ended  September  30, 2006, as compared to the same period of 2005,
resulted from increases in sales prices,  partially offset by decreases in sales
volumes.  During the three months ended  September  30, 2006, as compared to the
three  months  ended  September  30,  2005,  the  Company  reported a 67 percent
increase  in oil  prices,  a 12 percent  increase in NGL prices and a 12 percent
decrease in gas prices.  The Company also realized a three  percent  decrease in
average  daily BOE sales  volumes,  which is  reflective  of a  decrease  in oil
volumes sold, partially offset by increases in NGL and gas volumes. The increase
in oil and gas revenues from continuing  operations during the nine months ended
September  30,  2006,  resulted  from  increases  in oil and NGL  sales  prices,
partially  offset by a decline in reported  sales volumes.  In the  year-to-date
comparisons,  the Company  reported a 75 percent  increase  in oil prices,  a 21
percent increase in NGL prices and a three percent  decrease in gas prices.  The
Company  also  realized a decrease  in oil  volumes  sold,  partially  offset by
increases in NGL and gas volumes sold.

     The primary factors in the quarterly and nine-month  relative  increases in
reported  oil prices and  decreases  in reported  oil sales  volumes  were first
deliveries  of oil volumes under the Company's  VPP  agreements  during  January
2006. In accordance  with GAAP,  VPP deliveries  result in VPP deferred  revenue
amortization being recognized with no associated sales volumes being recorded.

     The following  table provides  average daily sales volumes from  continuing
operations, by geographic area and in total, for the three and nine months ended
September 30, 2006 and 2005:



                                       Three months ended          Nine months ended
                                          September 30,              September 30,
                                     ----------------------     ----------------------
                                        2006         2005          2006         2005
                                     ---------    ---------     ---------    ---------

                                                                 
Oil (Bbls):
  United States.................        17,575       21,484        17,406       21,290
  Canada........................           312          209           299          194
  Africa........................         5,812        9,666         6,680       10,686
                                     ---------    ---------     ---------    ---------
  Worldwide.....................        23,699       31,359        24,385       32,170
                                     =========    =========     =========    =========
NGLs (Bbls):
  United States.................        18,884       18,176        18,599       16,835
  Canada........................           468          502           433          510
                                     ---------    ---------     ---------    ---------
  Worldwide.....................        19,352       18,678        19,032       17,345
                                     =========    =========     =========    =========
Gas (Mcf):
  United States.................       286,182      274,390       282,450      269,807
  Canada........................        46,664       37,562        42,456       36,160
                                     ---------    ---------     ---------    ---------
  Worldwide.....................       332,846      311,952       324,906      305,967
                                     =========    =========     =========    =========
Total (BOE):
  United States.................        84,155       85,391        83,080       83,093
  Canada........................         8,558        6,972         7,808        6,731
  Africa........................         5,812        9,666         6,680       10,686
                                     ---------    ---------     ---------    ---------
  Worldwide.....................        98,525      102,029        97,568      100,510
                                     =========    =========     =========    =========


     During the three months ended  September 30, 2006, as compared to the three
months ended  September 30, 2005,  average  daily sales volumes  increased by 23
percent in Canada,  while average daily sales volumes decreased by 40 percent in
Africa and one  percent  in the United  States.  During  the nine  months  ended
September  30, 2006,  as compared to the nine months ended  September  30, 2005,
average  daily sales  volumes  increased by 16 percent in Canada,  while average
daily sales volumes  decreased by 37 percent in Africa and remained  essentially

                                       40





                        PIONEER NATURAL RESOURCES COMPANY


unchanged  in the United  States.  Canadian  average  daily sales  volumes  from
continuing  operations  increased due to new  production  from wells drilled and
connected to infrastructure during the fourth quarter of 2005 and the first nine
months  of  2006.  Partially  offsetting  these  production  increases  were the
aforementioned  increases in volumes sold under VPPs and production decreases in
Africa which were  primarily  attributed  to normal  production  declines in the
Company's  Sable oil field in South Africa and timing of oil  shipments for both
South Africa and Tunisia.

     During the three months ended  September 30, 2006, as compared to the three
months ended September 30, 2005,  average daily oil volumes  delivered under the
Company's  VPPs  increased  by 8,803  Bbls,  while  average  daily  gas  volumes
delivered  decreased by 7,957 Mcf (1,326  BOE).  On a  year-to-date  comparison,
average daily oil volumes  delivered under the Company's VPPs increased by 8,857
Bbls and average daily gas volumes delivered increased by 927 Mcf (154 BOE).

     The following table provides average daily sales volumes from  discontinued
operations,  by geographic  area and in total,  during the three and nine months
ended September 30, 2006 and 2005:



                                       Three months ended          Nine months ended
                                          September 30,              September 30,
                                     ----------------------     ----------------------
                                        2006         2005          2006         2005
                                     ---------    ---------     ---------    ---------

                                                                 
Oil (Bbls):
  United States.................            -         3,715         3,208        5,478
  Argentina.....................            -         7,930         3,362        7,972
  Canada........................            -             -             -           38
                                     --------     ---------     ---------    ---------
  Worldwide.....................            -        11,645         6,570       13,488
                                     ========     =========     =========    =========
NGLs (Bbls):
  United States.................            -           131             -           87
  Argentina.....................            -         1,917           563        1,814
  Canada........................            -             2             -          149
                                     --------     ---------     ---------    ---------
  Worldwide.....................            -         2,050           563        2,050
                                     ========     =========     =========    =========
Gas (Mcf):
  United States.................         (140)      189,429        48,195      248,556
  Argentina.....................            -       142,399        58,700      136,023
  Canada........................            -           347            58        8,676
                                     --------     ---------     ---------    ---------
  Worldwide.....................         (140)      332,175       106,953      393,255
                                     ========     =========     =========    =========
Total (BOE):
  United States.................          (23)       35,416        11,241       46,992
  Argentina.....................            -        33,581        13,708       32,456
  Canada........................            -            60            10        1,633
                                     --------     ---------     ---------    ---------
  Worldwide.....................          (23)       69,057        24,959       81,081
                                     ========     =========     =========    =========


                                       41





                        PIONEER NATURAL RESOURCES COMPANY


     The oil,  NGL and gas  prices  that the  Company  reports  are based on the
market  price  received  for the  commodities  adjusted  by the  results  of the
Company's  cash flow hedging  activities  and the  amortization  of deferred VPP
revenue.  The following table provides  average  reported prices from continuing
operations  (including the results of hedging activities and the amortization of
deferred VPP revenue) and average  realized  prices from  continuing  operations
(excluding the results of hedging  activities and the  amortization  of deferred
VPP  revenue)  by  geographic  area and in total,  for the three and nine months
ended September 30, 2006 and 2005:



                                       Three months ended          Nine months ended
                                          September 30,              September 30,
                                     ----------------------     ----------------------
                                        2006         2005          2006         2005
                                     ---------    ---------     ---------    ---------

                                                                 
  Average reported prices:
    Oil (per Bbl):
       United States..............   $   70.96    $   34.57     $   66.91    $   31.37
       Canada.....................   $   70.44    $   68.77     $   70.09    $   51.73
       Africa.....................   $   70.73    $   59.57     $   66.49    $   51.40
       Worldwide..................   $   70.89    $   42.51     $   66.83    $   38.15
    NGLs (per Bbl):
       United States..............   $   38.73    $   34.40     $   36.15    $   29.78
       Canada.....................   $   53.11    $   49.93     $   55.01    $   43.22
       Worldwide..................   $   39.08    $   34.82     $   36.58    $   30.18
    Gas (per Mcf):
       United States..............   $    6.24    $    7.18     $    6.30    $    6.67
       Canada.....................   $    6.91    $    7.51     $    7.27    $    6.57
       Worldwide..................   $    6.33    $    7.22     $    6.43    $    6.66
  Average realized prices:
    Oil (per Bbl):
       United States..............   $   69.58    $   60.61     $   65.34    $   52.35
       Canada.....................   $   70.44    $   68.77     $   70.09    $   51.73
       Africa.....................   $   70.73    $   59.57     $   66.34    $   51.40
       Worldwide..................   $   69.87    $   60.35     $   65.67    $   52.03
    NGLs (per Bbl):
       United States..............   $   38.73    $   34.40     $   36.15    $   29.78
       Canada.....................   $   53.11    $   49.93     $   55.01    $   43.22
       Worldwide..................   $   39.08    $   34.82     $   36.58    $   30.18
    Gas (per Mcf):
       United States..............   $    5.70    $    7.50     $    6.07    $    6.51
       Canada.....................   $    6.28    $    7.82     $    6.82    $    6.68
       Worldwide..................   $    5.77    $    7.51     $    6.17    $    6.53


     Hedging  activities.   The  Company  utilizes  commodity  swap  and  collar
contracts  in  order  to (i)  reduce  the  effect  of  price  volatility  on the
commodities the Company  produces and sells,  (ii) support the Company's  annual
capital  budgeting and expenditure  plans and (iii) reduce  commodity price risk
associated with certain capital projects. During the three and nine months ended
September 30, 2006, the Company's  commodity price hedges  decreased oil and gas
revenues  from  continuing  operations  by $28.2  million  and  $112.3  million,
respectively,  as compared to $82.6 million and $159.4  million  during the same
respective  periods  in 2005.  See Note F of  Notes  to  Consolidated  Financial
Statements included in "Item 1. Financial  Statements" for specific  information
regarding  the  Company's  hedging  activities  during the three and nine months
ended September 30, 2006 and 2005.

     Deferred  revenue.  During the three and nine months  ended  September  30,
2006, the Company's  amortization of deferred VPP revenue  increased oil and gas
revenues  from  continuing  operations  by $47.4  million  and  $143.2  million,
respectively,  as compared to $21.9  million and $54.0  million  during the same
respective periods in 2005. See Notes F and L of Notes to Consolidated Financial
Statements included in "Item 1. Financial  Statements" for specific  information
regarding the Company's VPPs.

     Interest  and other  income.  Interest  and other  income  from  continuing
operations  for the three and nine  months  ended  September  30, 2006 was $15.2
million and $42.1 million,  respectively,  as compared to $7.9 million and $21.9
million for the same  respective  periods in 2005. The $7.3 million  increase in

                                       42





                        PIONEER NATURAL RESOURCES COMPANY

interest and other  income from  continuing  operations  during the three months
ended  September 30, 2006, as compared to the same period in 2005, was primarily
due to the Company's receipt of $5.6 million for Alaskan  exploration  incentive
tax credits  during the third  quarter of 2006,  and a $5.2 million  increase in
interest income primarily from the investment of Argentine divestiture proceeds,
partially offset by a $4.8 million decrease in business  interruption  insurance
recoveries associated with the 2005 Fain plant fire.  Significant factors in the
$20.2 million  increase in interest and other income from continuing  operations
during the nine months ended  September 30, 2006, as compared to the same period
in 2005,  included an $11.4 million  increase in interest income  primarily from
the investment of Argentine and deepwater Gulf of Mexico  divestiture  proceeds,
the  aforementioned  Alaskan  exploration  incentive  credits and a $4.0 million
increase  in  minority  interest  reimbursements,  partially  offset by an $10.6
million decrease in business interruption  insurance claims. See Note M of Notes
to Consolidated  Financial Statements included in "Item 1. Financial Statements"
for  additional   information  regarding  the  Company's  business  interruption
insurance claims.

     Oil and gas production  costs.  The Company recorded oil and gas production
costs from continuing operations of $103.0 million and $300.7 million during the
three and nine months ended  September  30, 2006,  respectively,  as compared to
$92.8  million and $253.4  million for the same  respective  periods of 2005. In
general, lease operating expenses and workover expenses represent the components
of oil and gas production  costs over which the Company has management  control,
while  production and ad valorem taxes are directly  related to commodity  price
changes and third-party  transportation charges are related to volumes produced.
Total oil and gas production costs per BOE from continuing  operations increased
by 15 percent  and 22  percent,  respectively,  during the three and nine months
ended  September 30, 2006, as compared to the same  respective  periods in 2005,
primarily  due  to (i)  increases  of  approximately  $.82  and  $.99  per  BOE,
respectively,  resulting from 96 percent and 138 percent  relative  increases in
VPP volume  deliveries  on a BOE basis,  for which the Company  records no sales
volumes but bears all associated  production  costs,  (ii) general  inflation of
field service costs and (iii)  increases in ad valorem taxes,  production  taxes
and field utility costs due to increases in commodity prices.

     The following  tables provide the components of the Company's total oil and
gas production  costs per BOE from  continuing  operations and total oil and gas
production  costs per BOE from continuing  operations by geographic area for the
three and nine months ended September 30, 2006 and 2005:


                                       Three months ended          Nine months ended
                                          September 30,              September 30,
                                     ----------------------     ----------------------
                                        2006         2005          2006         2005
                                     ---------    ---------     ---------    ---------

                                                                  
Lease operating expenses............  $   5.98     $   5.63      $   6.12     $   5.14
Third-party transportation charges..      1.25         1.00          1.22         1.02
Taxes:
  Ad valorem........................      1.34         1.05          1.35         1.07
  Production........................      1.86         1.67          1.80         1.42
Workover costs......................       .93          .54           .80          .58
                                      --------     --------      --------     --------
  Total production costs............  $  11.36     $   9.89      $  11.29     $   9.23
                                      ========     ========      ========     ========




                                       Three months ended          Nine months ended
                                          September 30,              September 30,
                                     ----------------------     ----------------------
                                        2006         2005          2006         2005
                                     ---------    ---------     ---------    ---------

                                                                  
  United States.....................  $  10.84     $   9.50      $  10.82     $   8.91
  Canada............................  $  18.14     $  15.23      $  16.88     $  14.90
  Africa............................  $   8.94     $   9.50      $  10.62     $   8.19
  Worldwide.........................  $  11.36     $   9.89      $  11.29     $   9.23


     Depletion,  depreciation and amortization expense. The Company's total DD&A
expense from  continuing  operations  was $10.51 and $9.97 per BOE for the three
and nine months ended September 30, 2006, respectively, as compared to $8.08 and
$7.84 per BOE during the same respective periods of 2005. Depletion expense from
continuing  operations,  the largest  component of DD&A expense from  continuing
operations,  was $9.82 and $9.31 per BOE during the three and nine months  ended
September  30,  2006,  as  compared  to $7.53 and $7.31 per BOE  during the same
respective  periods in 2005.  The  increase in per BOE  depletion  expense  from

                                       43





                        PIONEER NATURAL RESOURCES COMPANY


continuing operations during the three and nine months ended September 30, 2006,
as compared to the same  respective  periods in 2005, was primarily due to (i) a
generally  increasing  trend in the Company's oil and gas properties' cost bases
per BOE of proved and proved  developed  reserves,  (ii)  downward  revisions of
proved reserves during 2006 as compared to 2005, primarily due to the period end
commodity price declines, (iii) the aforementioned sale of proved reserves under
VPP  agreements,   for  which  the  Company  removed  proved  reserves  with  no
corresponding  decrease in cost basis,  (iv) $.03 and $1.30 per BOE increases in
respective Tunisian depletion expense primarily  associated with a 2005 and 2006
decrease in the Company's  working  interest in the Adam  Concession and (v) the
Company being limited in the amount of proved reserves that could be recorded in
Canada  associated  with its 2006 winter  drilling  program in  Chinchaga  until
certain well performance  data is obtained.  The increases were partially offset
by $5.78 and $3.64 per BOE respective  decreases in South African  depletion due
to 2005 and year-to-date  2006 positive reserve  revisions  attributable to well
performance.

     The following  table  provides  depletion  expense per BOE from  continuing
operations by geographic  area for the three and nine months ended September 30,
2006 and 2005:



                                       Three months ended          Nine months ended
                                          September 30,              September 30,
                                     ----------------------     ----------------------
                                        2006         2005          2006         2005
                                     ---------    ---------     ---------    ---------

                                                                  
  United States..................     $   9.59     $   6.98      $   9.05     $   6.78
  Canada.........................     $  15.86     $  14.01      $  15.09     $  12.75
  Africa.........................     $   4.20     $   7.64      $   5.86     $   8.03
  Worldwide......................     $   9.82     $   7.53      $   9.31     $   7.31


     Exploration,  abandonments, geological and geophysical costs. The following
table provides the Company's  geological and geophysical costs,  exploratory dry
hole expense,  lease abandonments and other exploration  expense from continuing
operations by geographic  area for the three and nine months ended September 30,
2006 and 2005:



                                                   United                     Africa
                                                   States       Canada       and Other         Total
                                                 ----------    ---------    ------------    ----------
                                                                           (in thousands)

                                                                                
Three months ended September 30, 2006:
   Geological and geophysical..............      $   19,390    $   1,510      $    6,092    $   26,992
   Exploratory dry holes...................           9,718          904           2,458        13,080
   Leasehold abandonments and other........           3,348          400               -         3,748
                                                 ----------    ---------      ----------    ----------
                                                 $   32,456    $   2,814      $    8,550    $   43,820
                                                 ==========    =========      ==========    ==========
Three months ended September 30, 2005:
   Geological and geophysical..............      $   11,875    $     892      $    3,214    $   15,981
   Exploratory dry holes...................             (19)         184           4,988         5,153
   Leasehold abandonments and other........          34,901          329               -        35,230
                                                 ----------    ---------      ----------    ----------
                                                 $   46,757    $   1,405      $    8,202    $   56,364
                                                 ==========    =========      ==========    ==========
Nine months ended September 30, 2006:
   Geological and geophysical..............      $   52,012    $   4,314      $   26,105    $   82,431
   Exploratory dry holes...................          41,076        3,941          17,670        62,687
   Leasehold abandonments and other........          45,984        1,155          17,823        64,962
                                                 ----------    ---------      ----------    ----------
                                                 $  139,072    $   9,410      $   61,598    $  210,080
                                                 ==========    =========      ==========    ==========
Nine months ended September 30, 2005:
   Geological and geophysical..............      $   49,201    $   3,756      $   23,073    $   76,030
   Exploratory dry holes...................          11,423        3,413          17,487        32,323
   Leasehold abandonments and other........          38,360          659             319        39,338
                                                 ----------    ---------      ----------    ----------
                                                 $   98,984    $   7,828      $   40,879    $  147,691
                                                 ==========    =========      ==========    ==========


                                       44






                        PIONEER NATURAL RESOURCES COMPANY

     The  Company's   exploration  and   abandonment   expense  from  continuing
operations  during the third quarter of 2006 was primarily  attributable  to dry
hole  provisions of $7.5 million and $1.8 million  associated with the Company's
unsuccessful  Gulf of  Mexico  shelf  Antigua  prospect  and the  Adam 5 well in
Tunisia,   respectively,   and  property  abandonment  provisions.   Significant
components of the Company's  exploration and abandonment expense from continuing
operations  during the nine months ended  September  30, 2006 included (i) $34.0
million  attributable to an unsuccessful well and related  impairment of acreage
on the Company's Block 256 permit in Nigeria, (ii) $16.7 million associated with
three  unsuccessful  wells in the Company's  winter drilling  program in Alaska,
(iii) $20.0 million  attributable to the write-off of the Company's Platypus and
Antigua  prospects  on the shelf of the Gulf of Mexico  and (iv)  various  other
exploratory wells. The United States leasehold  abandonments and other costs for
the nine months ended  September 30, 2006  includes a $42.0 million  increase in
East Cameron  abandonment  obligations that resulted from Hurricane Rita damage.
During the nine  months  ended  September  30,  2006,  the  Company  drilled and
evaluated  297  exploration/extension  wells,  280 of  which  were  successfully
completed as discoveries. During the same respective period in 2005, the Company
drilled  and  evaluated  97  exploration/extension   wells,  73  of  which  were
successfully completed as discoveries.

     General and administrative expense. General and administrative expense from
continuing operations for the three and nine months ended September 30, 2006 was
$30.4 million and $92.1 million,  respectively, as compared to $29.8 million and
$83.9  million  during the same  respective  periods in 2005.  The  increases in
general and administrative expense from continuing operations were primarily due
to increases in administrative staff and performance-related  compensation costs
including the  amortization of restricted  stock awarded to officers,  directors
and employees.  The Company continues to monitor its general and  administrative
expenses  and is focused on a number of cost  control  initiatives  to limit its
expenditures.

     Interest  expense.  Interest  expense from continuing  operations was $23.6
million  and $82.9  million for the three and nine months  ended  September  30,
2006, respectively,  as compared to $28.9 million and $91.0 million for the same
respective  periods in 2005. The weighted average interest rate on the Company's
indebtedness  for the three and nine months ended September 30, 2006,  including
the effects of interest  rate  derivatives  and  capitalized  interest,  was 6.1
percent  and 6.5  percent,  respectively,  as  compared  to 6.6  percent and 6.5
percent  for each of the  same  respective  periods  in 2005.  The  decrease  in
interest  expense  from  continuing  operations  during the three  months  ended
September 30, 2006, as compared to the same period of 2005, was primarily due to
a $2.9  million  increase  in interest  capitalized  on the  Company's  Oooguruk
development  project in Alaska and South  Coast Gas project in South  Africa,  a
$2.1 million decrease in interest incurred on senior notes,  primarily resulting
from redemptions of higher yielding senior notes with proceeds from the issuance
of lower  yielding  senior  notes,  and  reduced  average  borrowings  under the
Company's  Credit  Agreement  primarily  as a result of the  application  of the
proceeds from the disposition of assets.  The decrease in interest  expense from
continuing  operations  during the nine months  ended  September  30,  2006,  as
compared  to the same  period  of 2005,  was  primarily  due to a $12.3  million
decrease in interest  incurred on senior notes,  resulting  from  redemptions of
higher  yielding  senior  notes  during  2005 and 2006  with  proceeds  from the
issuance  of lower  yielding  senior  notes and a $5.6  million  increase in the
aforementioned capitalized interest. Partially offsetting these decreases were a
$5.0 million increase in interest  incurred on Credit Agreement  borrowings as a
result of higher average  borrowings and Credit Agreement  borrowing rates and a
$3.9 million decrease in the amortization of interest rate hedge gains.

     Other expenses. Other expenses from continuing operations for the three and
nine  months  ended  September  30, 2006 were $14.8  million and $31.6  million,
respectively,  as  compared  to $34.2  million  and $58.7  million  for the same
respective  periods in 2005.  The  decrease in other  expenses  from  continuing
operations  for the three months ended  September  30, 2006,  as compared to the
same period of 2005, is primarily  attributable  to $18.6 million of 2005 losses
on bond redemptions and a $7.8  million decrease in hedge  ineffectiveness.  The
decrease in other  expenses from  continuing  operations  during the nine months
ended  September  30, 2006, as compared to the same period of 2005, is primarily
attributable to a $28.1 million  decrease in hedge  ineffectiveness  and a $17.6
million decrease in losses on bond redemptions and conversions, partially offset
by a $6.3 million increase in litigation contingency accrual.

                                       45






                        PIONEER NATURAL RESOURCES COMPANY


     Income tax  provision.  The Company  recognized  income tax  provisions  on
continuing  operations of $40.3 million and $111.2  million during the three and
nine months ended September 30, 2006, respectively, as compared to $17.4 million
and  $93.2  million  for the same  respective  periods  in 2005.  The  Company's
effective  tax rate on  continuing  operations  of 33.4 percent and 43.4 percent
during the three and nine months ended September 30, 2006, respectively, differs
from  the  combined   United  States   federal  and  state   statutory  rate  of
approximately 36.5 percent primarily due to:

o    foreign tax rates,
o    adjustments  to the deferred tax  liability for changes in enacted tax laws
     and rates;  during the nine months ended September 30, 2006, this primarily
     related to a $13.5 million  increase  associated  with the Texas margin tax
     and $9.8 million decrease due to reductions in Canadian tax rates,
o    statutes  in foreign  jurisdictions  that  differ  from those in the United
     States,
o    recognition  of $6.2 million of deferred tax benefit,  in the third quarter
     of 2006, as a result of conversion of senior convertible notes prior to the
     Company's  repayment  of  the  debt  principal  (see  Note  E of  Notes  to
     Consolidated Financial Statements) and
o    expenses  for  unsuccessful  well  costs and  associated  acreage  costs in
     foreign  locations  where the Company does not expect to receive income tax
     benefits; during the three and nine month periods ended September 30, 2006,
     this primarily  related to Nigerian  exploration  expenses of approximately
     $2.6 million and $41.8 million, respectively.

     See Note D of Notes to Consolidated  Financial Statements included in "Item
1.  Financial  Statements"  for additional  information  regarding the Company's
income  taxes,  the Texas  margin  tax,  changes in  Canadian  tax rates and the
effects of the 2005 Gabon divestment.

     Discontinued  operations.  During  2005  and  2006,  the  Company  sold its
interests in the following oil and gas assets and has reflected their results of
operations in discontinued operations:



       Country              Description of Assets              Date Divested
       -------              ---------------------              -------------

                                                      
       Canada               Martin Creek, Conroy Black         May 2005
                            and Lookout Butte fields

       United States        Two Gulf of Mexico                 August 2005
                            shelf fields

       United States        Deepwater Gulf of Mexico           March 2006
                            Fields

       Argentina            Argentine assets                   April 2006


     The Company recognized income from discontinued  operations of $0.5 million
and $566.8  million  during the three and nine months ended  September 30, 2006,
respectively,  as  compared  to $62.1  million  and $282.3  million for the same
respective  periods of 2005.  The income from  discontinued  operations  for the
third  quarter  of 2006  is  attributable  to  post-closing  settlements  on the
deepwater Gulf of Mexico and Argentine divestitures.

Capital Commitments, Capital Resources and Liquidity

     Capital  commitments.   The  Company's  primary  needs  for  cash  are  for
development, exploration and acquisition of oil and gas properties, repayment of
contractual obligations and working capital obligations.  Funding for these cash
needs,  as well as  funding  for any  stock  repurchases  that the  Company  may
undertake, may be provided by any combination of internally-generated cash flow,
proceeds from the  disposition of nonstrategic  assets or alternative  financing
sources as discussed in "Capital resources" below.


                                       46





                        PIONEER NATURAL RESOURCES COMPANY


     Oil and gas properties.  The Company's cash  expenditures  for additions to
oil and gas properties during the three and nine months ended September 30, 2006
totaled $342.2 million and $986.7 million,  respectively,  as compared to $406.2
million and $846.9 million for the same respective  periods of 2005.  During the
three and nine months ended September 30, 2006, the Company's  expenditures  for
additions  to oil and gas  properties  were funded by $182.7  million and $644.3
million,  respectively,  of net cash  provided  by  operating  activities  and a
portion of the $1.6 billion of net  proceeds  received in  conjunction  with the
sale of the  Company's  deepwater  Gulf of Mexico and  Argentine  assets (net of
payments to terminate derivative  instruments associated with the deepwater Gulf
of Mexico  assets).  During the three  months  ended  September  30,  2005,  the
Company's  additions to oil and gas properties  were funded by $309.8 million of
net cash provided by operating  activities and borrowings on the Company's lines
of credit.  During the nine months  ended  September  30,  2005,  the  Company's
additions to oil and gas properties were internally  funded by $923.4 million of
net cash provided by operating activities.

     Contractual  obligations,  including  off-balance  sheet  obligations.  The
Company's  contractual  obligations  include  long-term debt,  operating leases,
drilling commitments, derivative obligations, other liabilities,  transportation
commitments  and VPP  obligations.  From  time-to-time,  the Company enters into
off-balance  sheet  arrangements and transactions that can give rise to material
off-balance  sheet  obligations  of the Company.  As of September 30, 2006,  the
material  off-balance  sheet  arrangements and transactions that the Company has
entered  into  included  (i) undrawn  letters of credit,  (ii)  operating  lease
agreements,  (iii) drilling  commitments,  (iv) VPP  obligations  (to physically
deliver volumes and pay related lease operating  expenses in the future) and (v)
contractual  obligations for which the ultimate settlement amounts are not fixed
and  determinable  such as  derivative  contracts  that are  sensitive to future
changes in  commodity  prices.  Other than the  off-balance  sheet  arrangements
described  above,  the  Company  has  no  transactions,  arrangements  or  other
relationships with unconsolidated  entities or other persons that are reasonably
likely to  materially  affect the  Company's  liquidity  or  availability  of or
requirements  for capital  resources.  Since  December  31,  2005,  the material
changes in the  Company's  contractual  obligations  included (i) a $900 million
reduction in outstanding borrowings under the Credit Agreement, (ii) an increase
of approximately  $332 million in the Company's  drilling  commitments,  (iii) a
$437.3  million  decrease in  derivative  obligations  and (iv) a $69.4  million
increase in outstanding undrawn letters of credit. See "Item 3. Quantitative and
Qualitative  Disclosures  About  Market Risk" for a table of changes in the fair
value of the Company's  open  derivative  contract  liabilities  during the nine
months ended September 30, 2006.

     Environmental contingency. A subsidiary of the Company has been notified by
a letter  from the TCEQ  dated  August  24,  2005  that the TCEQ  considers  the
subsidiary to be a potentially  responsible party with respect to the Dorchester
Refining  Company State  Superfund Site located in Mount  Pleasant,  Texas.  The
subsidiary,  which was acquired by the Company in 1991, owned a refinery located
at the Mount  Pleasant  site from 1977 until 1984.  According to the TCEQ,  this
refinery  was  responsible  for  releases  of  hazardous   substances  into  the
environment.  The  Company  does not know the nature  and extent of the  alleged
contamination,  the potential costs of remediation,  or the portion,  if any, of
such costs that may be allocable to the Company's subsidiary.  However, based on
the limited information  currently available and assessed regarding this matter,
the  Company  has no reason to  believe  that the  matter  will have a  material
adverse  effect on its future  financial  condition,  results of  operations  or
liquidity.  See Note I of Notes to Consolidated Financial Statements included in
"Item 1. Financial Statements" for additional  information regarding this matter
as well as other environmental and legal contingencies involving the Company.

     Capital  resources.  The Company's  primary capital  resources are net cash
provided  by  operating  activities,  proceeds  from  financing  activities  and
proceeds from sales of nonstrategic  assets.  During the next twelve months, the
Company  anticipates  that net cash  provided  by  operating  activities  may be
insufficient  to fund its capital  commitments;  however,  net cash  provided by
operating  activities combined with proceeds from financing activities and sales
of nonstrategic assets are expected to be sufficient to fund capital commitments
during the foreseeable future.

     Asset  divestitures.  During  March  2006,  the  Company  sold  all  of its
interests in certain oil and gas  properties in the deepwater Gulf of Mexico for
net proceeds of $1.2 billion,  resulting in a pretax gain of $724.7 million. The
proceeds were reduced by $193.2 million of net payments to terminate  derivative
instruments  associated  with the deepwater Gulf of Mexico assets.  During April
2006, the Company sold its Argentine  assets for net proceeds of $669.6 million,
resulting  in a gain  of  $10.9  million.  The  net  cash  proceeds  from  these
divestitures  were  used to reduce  outstanding  indebtedness  under the  Credit
Agreement and for general corporate purposes.

                                       47





                        PIONEER NATURAL RESOURCES COMPANY


     Operating activities.  Net cash provided by operating activities during the
three and nine months  ended  September  30, 2006 was $182.7  million and $644.3
million,  respectively, as compared to $309.8 million and $923.4 million for the
same respective  periods in 2005. The decreases were primarily due to operations
discontinued  in 2005 and 2006,  partially  offset by  increases  in oil and gas
sales from continuing operations.  As a result of the sale of the deepwater Gulf
of Mexico assets,  the Company utilized all of its available United States NOLs,
other than those subject to limitations.  The use of the available United States
NOLs has accelerated the Company's payment of cash taxes.

     Investing  activities.  Investing activities used $367.2 million and $357.0
million of net cash during the three month periods ended  September 30, 2006 and
2005,  respectively,  and provided $598.1 million and $302.2 million of net cash
during the nine month periods ended  September 30, 2006 and 2005,  respectively.
The increase in net cash provided by investing activities during the nine months
ended September 30, 2006 as compared to the nine months ended September 30, 2005
was primarily due to a $458.0 million  increase in proceeds from  disposition of
assets,  partially  offset by a $139.7 million  increase in additions to oil and
gas properties.

     Financing  activities.  Net cash used in  financing  activities  during the
three months ended  September  30, 2006 was $172.4  million,  as compared to net
cash provided by financing activities of $52.6 million during the same period in
2005.  Net cash  used in  financing  activities  during  the nine  months  ended
September 30, 2006 and 2005 was $1.2 billion.

     During February 2006, the Board declared a semiannual  dividend of $.12 per
common  share,  payable  April 12, 2006 to  shareholders  of record on March 29,
2006.  Associated  therewith,  the  Company  paid  $15.5  million  of  aggregate
dividends during April 2006. During August 2006, the Board declared a semiannual
dividend of $.13 per common share,  payable on October 12, 2006 to  shareholders
of record on September 28, 2006.  Associated  therewith,  the Company paid $16.4
million of aggregate  dividends during October 2006. Future dividends are at the
discretion of the Board, and the Board may change the current dividend amount in
the future if warranted by future liquidity and capital resource attributes.

     During  August  2005,  the  Board  approved  a  share  repurchase   program
authorizing the purchase of up to $1 billion of the Company's common stock, $641
million of which was completed in 2005.  Purchase of the remaining  $359 million
of the  authorization  was initiated in mid-May 2006.  During the three and nine
months ended September 30, 2006, the Company  expended $125.2 million to acquire
3.2 million  shares of treasury  stock and $297.6 million to acquire 7.5 million
shares of  treasury  stock,  respectively,  of which  $124.4  million and $294.2
million, respectively, were repurchased pursuant to the repurchase program.

     During May 2006,  the Company  issued $450  million of 6.875% Notes for net
proceeds of $447.4  million.  The Company used the net proceeds  from the 6.875%
Notes to repurchase  $346.2 million of its 6.50% Notes and for general corporate
purposes.

     During  2006,  holders of $73 million of the  Company's  Convertible  Notes
exercised their conversion rights.  Associated therewith, the Company paid $58.3
million in cash, issued 1.7 million shares and recorded a $16.1 million increase
to stockholders'  equity. During the remainder of 2006, the Company expects that
the remaining $27 million of Convertible  Notes will be converted by the holders
or redeemed by the Company for cash at par value.

     The  Company's  financing  activities  through  September  30, 2006 had the
effect of extending the maturities of the Company's long-term debt and minimally
increasing the Company's  future  weighted  average  interest rate on fixed rate
debt.  Effective  September 29, 2006,  the  participating  lenders  extended the
maturity  on $1.395  billion  of  aggregate  loan  commitments  under the Credit
Agreement to September 30, 2011.

     As the Company  pursues its  strategy,  it may  utilize  various  financing
sources,  including  fixed  and  floating  rate  debt,  convertible  securities,
preferred  stock or common  stock.  The  Company  may also issue  securities  in
exchange for oil and gas  properties,  stock or other interests in other oil and
gas  companies  or  related  assets.  Additional  securities  may be of a  class
preferred  to common  stock  with  respect  to such  matters  as  dividends  and
liquidation  rights and may also have other rights and preferences as determined
by the Board.

                                       48





                        PIONEER NATURAL RESOURCES COMPANY


     Liquidity.  The Company's principal source of short-term  liquidity is cash
on hand and unused  borrowing  capacity on the Credit  Agreement.  There were no
outstanding  borrowings  under the Credit  Agreement as of  September  30, 2006.
After  deducting  $153.6  million of undrawn and  outstanding  letters of credit
under the Credit  Agreement,  the Company had $1.3  billion of unused  borrowing
capacity as of September 30, 2006. In the future,  to the extent that  Pioneer's
liquidity  results in cash in excess of immediate capital needs, the Company may
invest in short-term cash equivalent securities.

     Debt  ratings.  The Company  receives  debt credit  ratings from Standard &
Poor's Ratings  Group,  Inc.  ("S&P") and Moody's,  which are subject to regular
reviews.  During the fourth  quarter of 2005,  S&P cut the  Company's  corporate
credit  rating to BB+ with a stable  outlook  from BBB-.  During  January  2006,
Moody's cut the Company's corporate credit rating to Ba1 with a negative outlook
from Baa3. S&P and Moody's  consider many factors in  determining  the Company's
ratings including:  production growth opportunities,  liquidity, debt levels and
asset and reserve mix. As a result of the downgrades, the interest rate and fees
the Company pays on the Credit  Agreement  have  increased and  additional  debt
covenant  requirements  under the Credit  Agreement were  triggered.  During the
first nine months of 2006,  primarily as a result of the Company's downgrades by
the rating agencies, the Company increased its outstanding letters of credits by
approximately  $69 million  pursuant to agreements that contain  provisions with
rating  triggers.  The  downgrades  are not  expected to  materially  affect the
Company's  financial  position or  liquidity,  but could  negatively  impact the
Company's ability to obtain  additional  financing or the interest rate and fees
associated with such additional financing.

     Book capitalization and current ratio. The Company's book capitalization at
September  30, 2006 was $4.2  billion,  consisting  of debt of $1.2  billion and
stockholders'  equity of $3.0 billion. The Company's debt to book capitalization
decreased  to 29 percent at  September  30, 2006 from 48 percent at December 31,
2005,  primarily due to the recording of gains and the  application  of proceeds
from the  aforementioned  asset  dispositions.  The  Company's  ratio of current
assets to current  liabilities was .59 to 1.00 at September 30, 2006 as compared
to .60 to 1.00 at December 31, 2005.

     New accounting pronouncement.  In July 2006, the FASB issued Interpretation
No. 48,  "Accounting  for  Uncertainty  in Income  Taxes"  ("FIN No.  48").  The
Interpretation  clarifies  the  accounting  for income  taxes by  prescribing  a
minimum  recognition  threshold  that a tax  position is required to meet before
being recognized in the financial statements.  FIN No. 48 also provides guidance
on measurement, classification, interim accounting and disclosure. FIN No. 48 is
effective for fiscal years  beginning  after  December 15, 2006.  The Company is
continuing to assess potential impacts of this Interpretation.

     In  September  2006,  the FASB issued SFAS No. 157,  "Fair Value  Measures"
("SFAS 157"). SFAS 157 defines fair value, establishes a framework for measuring
fair value and enhances  disclosures  about fair value  measures  required under
other  accounting  pronouncements,  but does not change existing  guidance as to
whether or not an  instrument  is carried at fair value.  SFAS is effective  for
fiscal years  beginning  after  November 15, 2007.  The Company is continuing to
assess the impact of SFAS 157.

     In September  2006,  the FASB issued SFAS 158,  "Employers'  Accounting for
Defined Benefit Pension and other Postretirement Plans" ("SFAS 158"). Under SFAS
158, a business entity that sponsors one or more single-employer defined benefit
plans is required to:

o    recognize the funded status of a benefit  plan--measured  as the difference
     between plan assets at fair value (with limited exceptions) and the benefit
     obligation--in its statement of financial position,
o    recognize as a component  of other  comprehensive  income,  net of tax, the
     gains or losses and prior  service  costs or credits  that arise during the
     period but are not recognized as components of net periodic benefit cost,
o    measure  defined  benefit plan assets and obligations as of the date of the
     employer's fiscal year-end statement of financial position and
o    disclose in the notes to financial statements additional  information about
     certain effects on net periodic  benefit cost for the next fiscal year that
     arise from delayed recognition of the gains or losses,  prior service costs
     or credits, and transition asset or obligation.

                                       49





                        PIONEER NATURAL RESOURCES COMPANY


     An employer  with  publicly  traded  securities  is  required to  initially
recognize the funded status of its defined benefit  postretirement  plans and to
provide the required  disclosures  as of the end of the first fiscal year ending
after  December 15,  2006.  The Company  will adopt the  provisions  of SFAS 158
effective on December 31, 2006.  The Company's  presently  recognizes the funded
status of its defined benefit postretirement plans.  Consequently,  the adoption
of  SFAS  158  is not  expected  to  have a  material  impact  on the  Company's
liquidity, financial position or future results of operations.



                                       50





                        PIONEER NATURAL RESOURCES COMPANY


Item 3.     Quantitative and Qualitative Disclosures About Market Risk

     The following  quantitative and qualitative  disclosures  about market risk
are  supplementary to the quantitative and qualitative  disclosures  provided in
the Company's  Annual Report on Form 10-K for the year ended  December 31, 2005.
As such, the information contained herein should be read in conjunction with the
related  disclosures  in the  Company's  Annual Report on Form 10-K for the year
ended December 31, 2005.

     Although certain derivative contracts to which the Company has been a party
did not qualify as hedges,  the Company does not enter into  derivative or other
financial instruments for trading purposes.

     The following table reconciles the changes that occurred in the fair values
of the Company's open derivative contracts during the first nine months of 2006:



                                                    Derivative Contract Net Liabilities (a)
                                              ----------------------------------------------------
                                                              Foreign
                                                              Exchange     Interest
                                              Commodities       Rate         Rate          Total
                                              -----------     --------     --------     ----------
                                                                     (in thousands)

                                                                            
Fair value of contracts outstanding
   as of December 31, 2005................    $  (748,477)    $      -     $      -     $ (748,477)
Changes in contract fair value (b)........        168,493           78        1,349        169,920
Contract maturities.......................        122,767          (78)           -        122,689
Contract terminations.....................        293,467            -       (1,349)       292,118
                                              -----------     --------     --------     ----------
Fair value of contracts outstanding
   as of September 30, 2006...............    $  (163,750)    $      -     $      -     $ (163,750)
                                              ===========     ========     ========     ==========

---------------
(a)  Represents the fair values of open derivative  contracts  subject to market
     risk.  The Company also had $99.4 million and $870 thousand of  obligations
     under  terminated  derivatives  as of  September  30, 2006 and December 31,
     2005, respectively, for which no market risk exists.
(b)  At  inception,  derivative  contracts  entered  into by the Company have no
     intrinsic value.



     Foreign  exchange  rate  sensitivity.  From  time to  time,  the  Company's
Canadian  subsidiary  enters into  short-term  forward  currency  agreements  to
purchase Canadian dollars with U.S. dollar gas sales proceeds.  The Company does
not designate these derivatives as hedges due to their short-term nature.  There
were no  outstanding  forward  currency  agreements  at  September  30,  2006 or
December 31, 2005.

     Interest  rate  sensitivity.  During April 2006,  the Company  entered into
costless  collar  contracts  to hedge the coupon  rate on the  Company's  6.875%
Notes,  which were issued on May 1, 2006. The Company  terminated these costless
collar  contracts  for $1.3  million of deferred  gains.  See Note E of Notes to
Consolidated Financial Statements included in "Item 1. Financial Statements" and
Capital  Commitments,  Capital  Resources  and  Liquidity  included  in "Item 2.
Management's  Discussion  and  Analysis of  Financial  Condition  and Results of
Operations" for additional information regarding these debt transactions.

                                       51






                        PIONEER NATURAL RESOURCES COMPANY


     The following table provides information about other financial  instruments
to which the Company was a party as of September 30, 2006 and that are sensitive
to  changes  in  interest  rates.  For  debt  obligations,  the  table  presents
maturities by expected  maturity  dates,  the weighted  average  interest  rates
expected  to be paid on the debt  given  current  contractual  terms and  market
conditions  and the debt's  estimated  fair  value.  For fixed  rate  debt,  the
weighted average  interest rate represents the contractual  fixed rates that the
Company was obligated to periodically  pay on the debt as of September 30, 2006.
As of September  30, 2006,  the Company was not a party to material  derivatives
that would subject it to interest rate sensitivity.

                            Interest Rate Sensitivity
                    Debt Obligations as of September 30, 2006





                        Three Months                                                                              Liability
                           ending                            Year ending December 31,                           Fair Value at
                        December 31,    --------------------------------------------------------------------    September 30,
                            2006          2007       2008       2009       2010     Thereafter       Total          2006
                        ------------    -------    -------    -------    -------    ----------    ----------    -------------
                                                                      ($ in thousands)
                                                                                        
Total Debt:
 Fixed rate principal
    maturities (a).....   $     -       $32,075    $ 3,777    $     -    $     -    $1,259,985    $1,295,837      $1,299,742
 Weighted average
    interest rate......      6.52          6.51       6.48       6.48       6.48          6.48

-------------
(a)  Represents  maturities  of principal  amounts  excluding  (i) debt issuance
     discounts and premiums and (ii) net deferred fair value hedge losses.



     Commodity price sensitivity. The following table provides information about
the Company's oil and gas derivative  financial  instruments that were sensitive
to changes in oil or gas price as of  September  30, 2006.  As of September  30,
2006, the Company was a party to one gas index basis swap that is not designated
as a hedge and which  represented  a $9 thousand  asset.  Otherwise,  all of the
Company's oil and gas derivative financial instruments qualified as hedges.

     See Note F of Notes to Consolidated  Financial Statements included in "Item
1. Financial  Statements" for  information  regarding the terms of the Company's
derivative  financial  instruments  that are  sensitive to changes in oil or gas
prices as well as hedge volumes and weighted average prices by calendar quarter.


                                       52






                        PIONEER NATURAL RESOURCES COMPANY


                          Oil and Gas Price Sensitivity
            Derivative Financial Instruments as of September 30, 2006




                                                                                                   Asset
                                                   Three months           Year ending           (Liability)
                                                      Ending              December 31,         Fair Value at
                                                   December 31,     ---------------------      September 30,
                                                       2006           2007         2008             2006
                                                   ------------     --------     ---------     -------------
                                                                                               (in thousands)
                                                                                   
Oil Hedge Derivatives:
  Average daily notional Bbl volumes:
    Swap contracts............................           5,000          6,000        6,500       $(171,573)
      Weighted average fixed price per Bbl....       $   37.20      $   31.26    $   31.19
    Collar contracts (a)......................           6,500          1,000            -       $  (7,322)
      Weighted average ceiling price
         per Bbl..............................       $   66.41      $   89.00    $       -
      Weighted average floor price per Bbl....       $   41.92      $   50.00    $       -
  Average forward NYMEX oil prices (b)........       $   57.82      $   65.15    $   68.72

Gas Hedge Derivatives:
  Average daily notional MMBtu volumes (c):
    Swap contracts (a)........................          63,875         59,195       15,000       $  (5,503)
      Weighted average fixed price per MMbtu..       $    4.32      $    7.06         8.62
    Collar contracts..........................          95,000          6,164                    $  20,648
      Weighted average ceiling price
         per MMbtu............................       $   14.49      $   11.52     $      -
      Weighted average floor price per MMbtu..       $    6.55      $    9.00     $      -
  Average forward NYMEX gas prices (b)........       $    7.32      $    8.06     $   7.68

-------------
(a)  Subsequent  to September  30,  2006,  the Company (i) reduced its oil hedge
     position by terminating 2007 oil swap contracts for 1,000 Bbls per day with
     a fixed  price of  $30.80  per Bbl and  terminating  the  2007  oil  collar
     contracts  that are included in the table above and (ii)  increased its gas
     hedge position by entering into gas swap contracts for 40,000 MMBtu per day
     of forecasted 2007 gas sales at a weighted average price per MMBtu of $7.40
     (Panhandle  Eastern  Pipeline  Oklahoma  (mainline) index price) and 10,000
     MMBtu per day of forecasted 2007 gas sales at a weighted  average price per
     MMBtu of $7.80 (Houston Ship Channel index price).
(b)  The average  forward NYMEX oil and gas prices are based on October 30, 2006
     market quotes.
(c)  To minimize  basis risk,  the Company enters into basis swaps for a portion
     of its gas hedges to convert the index price of the hedging instrument from
     a NYMEX index to an index which reflects the geographic area of production.
     The Company  considers these basis swaps as part of the associated swap and
     collar contracts and, accordingly, the effects of the basis swaps have been
     presented together with the associated contracts.



Item 4.     Controls and Procedures

     Evaluation of disclosure controls and procedures. The Company's management,
with  the  participation  of  its  principal  executive  officer  and  principal
financial  officer,  have  evaluated,  as required by Rule  13a-15(b)  under the
Exchange Act, the Company's  disclosure  controls and  procedures (as defined in
Exchange Act Rule 13a-15(e)) as of the end of the period covered by this Report.
Based  on  that  evaluation,  the  principal  executive  officer  and  principal
financial  officer  concluded  that the design and  operation  of the  Company's
disclosure  controls and procedures  are effective in ensuring that  information
required to be  disclosed by the Company in the reports that it files or submits
under the Exchange Act is recorded,  processed,  summarized and reported  within
the time periods specified in the SEC's rules and forms.

     Changes in internal  control over financial  reporting.  There have been no
changes in the Company's  internal control over financial  reporting (as defined
in Rule  13a-15(f)  under the Exchange Act) that  occurred  during the Company's
last fiscal quarter that have  materially  affected or are reasonably  likely to
materially affect the Company's internal control over financial reporting.


                                       53






                        PIONEER NATURAL RESOURCES COMPANY


                           PART II. OTHER INFORMATION

Item 1.     Legal Proceedings

     The  Company is party to the legal  proceedings  that are  described  under
"Legal actions" in Notes I and N of Notes to Consolidated  Financial  Statements
included in "Item 1. Financial  Statements".  The Company is also party to other
proceedings and claims  incidental to its business.  While many of these matters
involve  inherent  uncertainty,  the  Company  believes  that the  amount of the
liability,  if any,  ultimately  incurred with respect to such other proceedings
and claims will not have a material adverse effect on the Company's consolidated
financial  position as a whole or on its liquidity,  capital resources or future
annual results of operations.

Item 1A.    Risk Factors

     In addition to the other  information set forth in this report,  you should
carefully  consider the risks  discussed in the Company's  Annual Report on Form
10-K  under  the  headings  "Item  1.  Business  -   Competition,   Markets  and
Regulations", "Item 1A. Risk Factors" and "Item 7A. Quantitative and Qualitative
Disclosures  About  Market  Risk",  which  risks  could  materially  affect  the
Company's  business,  financial  condition or future results.  There has been no
material change in the Company's risk factors from those described in the Annual
Report on Form  10-K.  These  risks are not the only risks  facing the  Company.
Additional risks and uncertainties not currently known to the Company or that it
currently  deems to be  immaterial  also may  materially  adversely  affect  the
Company's business, financial condition or future results.


                                       54






                        PIONEER NATURAL RESOURCES COMPANY


Item 2.     Unregistered Sales of Equity Securities and Use of Proceeds

Purchases of Equity Securities by the Issuer and Affiliated Purchasers

     The following  table  summarizes the Company's  purchases of treasury stock
during the three months ended September 30, 2006:



                                                                  Total Number of Shares      Approximate Dollar
                                                                   (or Units) Purchased        Amount of Shares
                          Total Number of      Average Price        As Part of Publicly        that May Yet Be
                         Shares (or Units)     Paid per Share         Announced Plans          Purchased under
      Period               Purchased (a)         (or Unit)              or Programs          Plans or Programs (b)
      ------             -----------------     --------------     ----------------------     ---------------------

                                                                                 
July 2006...........                  -           $      -                        -
August 2006.........            812,711           $   42.03                 795,100
September 2006......          2,352,494           $   38.70               2,351,700
                            -----------                                ------------
     Total..........          3,165,205           $   39.56               3,146,800              $  65,100,421
                            ===========                                ============              =============

-----------
(a)  Amounts  include shares  withheld to satisfy tax  withholding on employees'
     stock awards for which restrictions have lapsed.



     During  August  2005,  the  Board  approved  a  share  repurchase   program
authorizing the purchase of up to $1 billion of the Company's common stock, $641
million of which was  completed  in 2005.  An  additional  $294 million has been
completed through September 30, 2006.

Item 6.     Exhibits

Exhibits

 31.1 (a)   Chief Executive Officer certification under Section 302 of Sarbanes-
            Oxley Act of 2002.
 31.2 (a)   Chief Financial Officer certification under Section 302 of Sarbanes-
            Oxley Act of 2002.
 32.1 (b)   Chief Executive Officer certification under Section 906 of Sarbanes-
            Oxley Act of 2002.
 32.2 (b)   Chief Financial Officer certification under Section 906 of Sarbanes-
            Oxley Act of 2002.
---------------
(a) Filed herewith.
(b) Furnished herewith.


                                       55






                        PIONEER NATURAL RESOURCES COMPANY



                                   SIGNATURES

Pursuant  to the  requirements  of the  Securities  Exchange  Act of  1934,  the
Registrant  has duly  caused  this  report  to be  signed  on its  behalf by the
undersigned hereto duly authorized.

                                              PIONEER NATURAL RESOURCES COMPANY


Date:   November 6, 2006               By:      /s/ Richard P. Dealy
                                              --------------------------------
                                              Richard P. Dealy
                                              Executive Vice President and Chief
                                              Financial Officer




Date:   November 6, 2006               By:      /s/ Darin G. Holderness
                                              --------------------------------
                                              Darin G. Holderness
                                              Vice President and Chief
                                              Accounting Officer


                                       56





                        PIONEER NATURAL RESOURCES COMPANY



Exhibit Index
-------------

  31.1 (a)  Chief Executive Officer certification under Section 302 of Sarbanes-
            Oxley Act of 2002.
  31.2 (a)  Chief Financial Officer certification under Section 302 of Sarbanes-
            Oxley Act of 2002.
  32.1 (b)  Chief Executive Officer certification under Section 906 of Sarbanes-
            Oxley Act of 2002.
  32.2 (b)  Chief Financial Officer certification under Section 906 of Sarbanes-
            Oxley Act of 2002.

---------------
(a) Filed herewith.
(b) Furnished herewith.


                                       57