Chron.com | Oil sputters as markets again worry about shale productions Chron.com Oil halted gains as U.S. explorers resumed their drilling binge, raising concerns over whether output cuts by OPEC and its allies will be enough to clear a glut despite a pledge from Russia that it's committed to the curbs. Futures in New York fell 0.2 ... Oil Holds On to Risk-Driven Gains Oil prices fall as increased US drilling points to higher output Why US Oil Exports Are Surging |