SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                          ----------------------------

                                  SCHEDULE 13D
                                 (Rule 13d-102)

             INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT
            TO RULE 13d-1(a) AND AMENDMENTS THERETO FILED PURSUANT TO
                                  RULE 13d-2(a)

                    Under the Securities Exchange Act of 1934
                               (Amendment No. 1)*


                             PYR ENERGY CORPORATION
       -----------------------------------------------------------------
                                (Name of Issuer)

                         COMMON STOCK, $0.001 PAR VALUE
       -----------------------------------------------------------------
                         (Title of Class of Securities)

                                    693677106
        -----------------------------------------------------------------
                                 (CUSIP Number)

                                Annabel M. Jones
                  Assistant General Counsel - Corporate Affairs
                            Samson Investment Company
                             Two West Second Street
                              Tulsa, Oklahoma 74103
                                 (918) 591-1006

                                 With a copy to:
                                 R. Scott Cohen
                           Weil, Gotshal & Manges LLP
                          200 Crescent Court, Suite 300
                                Dallas, TX 75201
         ---------------------------------------------------------------
                  (Name, Address and Telephone Number of Person
                Authorized to Receive Notices and Communications)


                                January 29, 2007
        ----------------------------------------------------------------
             (Date of event which requires filing of this Statement)

If the filing person has previously  filed a statement on Schedule 13G to report
the  acquisition  that is the subject of this  Schedule  13D, and is filing this
schedule because of ss.ss.240.13d-1(e),  240.13d-1(f) or 240.13d-1(g), check the
following box.
               ----

Note:  Schedules  filed in paper format shall include a signed original and five
copies of the  schedule,  including  all exhibits.  See  ss.240.13d-7  for other
parties to whom copies are to be sent.

                         (Continued on following pages)

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* The remainder of this cover page shall be filled out for a reporting  person's
initial filing on this form with respect to the subject class of securities, and
for  any  subsequent   amendment   containing   information  which  would  alter
disclosures provided in a prior cover page.


The information required on the remainder of this cover page shall not be deemed
to be "filed" for the purpose of Section 18 of the  Securities  Exchange  Act of
1934 ("Act") or otherwise  subject to the liabilities of that section of the Act
but  shall be  subject  to all other  provisions  of the Act  (however,  see the
Notes).





























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      EXPLANATORY NOTES: This Amendment No. 1 to Schedule 13D (this "Amendment")
is  being  filed by  Samson  Investment  Company  ("Samson")  identified  in the
Schedule 13D filed on January 4, 2007 (the  "Schedule  13D") with the Securities
and Exchange  Commission  (the "SEC")  relating to the common  stock,  par value
$0.001 per share, of Pyr Energy Corporation (the "Issuer").  The Schedule 13D is
hereby amended and  supplemented by Samson as set forth below in this Amendment.
Capitalized terms used but not defined in this Amendment shall have the meanings
given in the Schedule 13D.

Item 3.      Source and Amount of Funds or Other Consideration

      The disclosure in Item 3 is hereby amended and restated in its entirety as
follows:

      The  aggregate  amount of funds used by Samson to purchase  the  3,689,200
shares of the Issuer's common stock  beneficially owned by it (the "Shares") was
approximately $3.6 million, including commissions.

      The funds used to purchase the Shares were obtained from Samson's  working
capital. Any funds used to purchase the Issuer's common stock in the future will
also be obtained from Samson's working capital.

Item 4.      Purpose of Transaction

      The disclosure in Item 4 is hereby amended and restated in its entirety as
follows:

      Samson's  initial  acquisitions of the Issuer's common stock were effected
for  investment  purposes.  In connection  with its most recent  acquisition  of
shares of the Issuer's common stock, however, Samson began evaluating whether to
make an offer to acquire  the  Issuer or a  material  portion of its oil and gas
properties. Samson has changed its investment intent and now proposes to acquire
all of the outstanding  common stock of the Issuer.  On January 29, 2007, Samson
sent a letter to the Issuer,  a copy of which is  incorporated by reference into
Item 4 and  included as Exhibit A to this  Amendment,  pursuant to which  Samson
notified the Issuer of its proposal to offer to purchase 100% of the outstanding
common stock of the Issuer at a cash price of $1.23 per share in accordance with
the terms of the letter.  As stated above in Item 3, the full purchase price for
the shares of the Issuer's  common stock will be funded from working capital and
no additional financing will be required.

      Samson  reserves  the right to be in contact  with members of the Issuer's
management,  the members of the Issuer's board of directors,  other  significant
shareholders  and others  regarding  alternatives  that Issuer  could  employ to
maximize  shareholder  value.  Samson may, and  reserves  the right to,  acquire
additional shares of the Issuer's common stock at any time and from time to time
in the open market,  in  privately  negotiated  transactions  or  otherwise.  In
addition, Samson may determine to dispose of all or any portion of the Shares at
any  time or from  time to time in the  open  market,  in  privately  negotiated
transactions or otherwise.  Further, Samson reserves the right to act in concert
with any  other  shareholders  of the  Issuer,  or other  persons,  for a common
purpose should they determine to do so, and/or to recommend courses of action to
the Issuer's management, the Issuer's board of directors and the shareholders of
the Issuer.



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      Except as referenced above,  neither Samson,  nor to the best knowledge of
Samson,  any of the persons  named on Schedule A of the  Schedule  13D,  has any
plans or proposals of the types referred to in clauses (b) through (j) of Item 4
of Schedule 13D.



Item 7.     Material To Be Filed As Exhibits

Exhibit
Letter      Exhibit Name
-------     --------------------------------------------------------------------
   A        Letter to Mr. Kenneth R. Berry, Jr., Chief Executive Officer of  the
            Issuer, and  the  Board of  Directors  of  the Issuer,  dated as  of
            January 29, 2007.



























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                                    SIGNATURE

      After  reasonable  inquiry and to the best of my knowledge  and belief,  I
certify that the information  set forth in this statement is true,  complete and
correct.

Dated:  January 29, 2007
                            SAMSON INVESTMENT COMPANY


                            By:    //s// Jack A. Canon
                                   ---------------------------
                            Name:  Jack A. Canon

                            Title: Senior Vice President-General Counsel





























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                                  EXHIBIT INDEX


Exhibit
Letter      Exhibit Name
-------     --------------------------------------------------------------------

   A        Letter to Mr. Kenneth R. Berry, Jr., Chief Executive Officer of  the
            Issuer, and  the  Board of  Directors  of  the Issuer,  dated as  of
            January 29, 2007.


































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