U.S. energy companies extended their recovery in oil drilling into a seventh month this week as they follow through on plans to add rigs as crude rose to its highest price in over a year. Drillers added three oil rigs in the week to Dec. 2, bringing the total count up to 477, the most since January, but still below the 545 rigs seen a year ago, energy services firm Baker Hughes Inc said on Friday. Since crude prices recovered from 13-year lows to around $50 a barrel in May, drillers have added a total of 161 oil rigs in 24 of the past 27 weeks, its biggest recovery since a global oil glut crushed the market over two years. Almost two-thirds of the rigs added since […]