Schlumberger, Halliburton took a bit of a hit as shale patch tightens belt - WorldOil
Schlumberger, Halliburton took a bit of a hit as shale patch tightens belt WorldOilSchlumberger Ltd. had its debt rating lowered by S&P Global Inc. as belt-tightening in the U.S. shale patch translates into less drilling and fracing work for the ...