Schlumberger leads energy stocks lower By: MarketWatch December 14, 2012 at 11:14 AM EST Energy stocks are mixed, with oil-field services giant Schlumberger Ltd. declining more than 4% as it warns profit will take a hit due to a drilling slowdown. Read More >> Related Stocks: Baker Hughes Inc Chevron Corp ConocoPhillips Energy Select Sector SPDR Exxon Mobil Halliburton Co Marathon Oil Phillips 66 Schlumberger Ltd Tesoro Petroleum Co