U.S. energy firms this week added rigs drilling for oil for a second week in a row for the first time since August, energy services firm Baker Hughes Inc said on Friday, after crude prices this week rallied to an 11-month high over $51 a barrel. Analysts and producers have said U.S. crude prices over $50 would trigger a return to the well pad after a near two-year slump in drilling. Drillers added three oil rigs in the week to June 10, bringing the total rig count up to 328, compared with 635 a year ago, Baker Hughes said in its closely followed report. Two of those oil rigs were added in the Bakken shale producing region in North Dakota, bringing the total up to 24, the first […]