U.S. drillers added oil rigs for a seventh week in a row, extending a recovery into a tenth month as energy companies, including Exxon Mobil Corp, boost spending plans to take advantage of a crude price recovery. Drillers added seven oil rigs in the week to March 3, bringing the total count up to 609, the most since October 2015, energy services firm Baker Hughes Inc said on Friday. During the same week a year ago, there were 392 active oil rigs. Since crude prices first topped $50 a barrel in May after recovering from 13-year lows in February 2016, drillers have added a total of 293 oil rigs in 36 of the past 40 weeks, the biggest recovery in rigs since a global oil […]