Buying Texas oil at New Mexico prices: Majors go west for shale

The state, which covers a smaller part of the oil-soaked shale formation, is the fourth-largest U.S. producer and luring industry giants including ExxonMobil, Chevron Corp., EOG Resources Inc. and Occidental Petroleum Corp. Their investments -- while small compared with Texas -- are increasing as activity in the rest of the Permian starts to slow down. More »