U.S. active rigs rose by 22 to 2,012 this week, up 20 percent from a year ago and the highest in more than three years, according to Baker Hughes. Oil rigs were up 10 to 1,070 and natural gas rigs added 12 to 935. Texas gained eight rigs to 912, and Oklahoma gained six to 202. In the Barnett Shale, active rigs fell by eight to 56, according to RigData. Leading counties were Tarrant, 20 rigs; Wise, seven; and Denton and Johnson, each with six.