U.S. oil drillers put rigs back to work this week, lifting the number in operation from a three-month low in a push to home in on their most profitable fields after crude prices sank to the lowest since 2010. Rigs targeting oil jumped by 10 to 1,578 after sliding to the lowest level since August last week, Baker Hughes Inc. (BHI) said on its website today. Those drilling for natural gas declined by six, the Houston-based field services company’s website. While oil rigs fell in Texas ’s Eagle Ford formation and the Cana Woodford of Oklahoma, they picked up in the Utica in the eastern U.S. and the Permian Basin of Texas and New Mexico . “The Permian is a tried and tested formula,” Matthew Jurecky, head of oil and gas research for the London-based research company GlobalData Ltd., said by telephone from New York . “The stuff that’d […]