U.S. energy companies added oil rigs for an eighth week in a row, extending a seven-month drilling recovery as crude prices remained near a 17-month high. Drillers added 13 oil rigs in the week to Dec. 23, bringing the total count up to 523, the most since December 2015, but still below the 538 rigs seen a year ago, energy services firm Baker Hughes Inc said on Friday. Since crude prices recovered from 13-year lows in February to around $50 a barrel in May, drillers have added a total of 207 oil rigs in 27 of the past 30 weeks, the biggest recovery in rigs since a global oil glut crushed the market over two years. The Baker Hughes oil rig count plunged from a record 1,609 in October 2014 to a six-year low of 316 in May as U.S. crude collapsed from over $107 a barrel in June […]