Gains from higher rig count limited for Halliburton, Schlumberger
October 20, 2016 at 13:19 PM EDT
Oct 20 (Reuters) - An increase in rigs being put back to work in U.S. shale fields is largely being driven by smaller oil companies drilling less-complex wells that don't need costly, high-tech services offered by industry leaders such as Halliburton Co.
