U.S. energy companies added the most oil rigs in both a week and a month since February as drillers continued to return to the well pad with crude prices at their highest since late 2014. FILE PHOTO: Oil rigs are seen in Midland, Texas May 9, 2008. REUTERS/Jessica Rinaldi The total oil rig count rose by 15 to 859 in the week to May 25, the highest level since March 2015, General Electric Co’s Baker Hughes energy services firm said in its closely followed report on Friday. For the month, the rig count rose by 34, its second increase in row, after rising 28 in April. More than half the total oil rigs are in Permian basin in west Texas and eastern New Mexico, the nation’s biggest shale oil field. Active units there increased by 10 this week to 477, the most since January 2015. That was […]