The total number of active drilling rigs for oil and gas in the United States rose this week, according to new data that Baker Hughes published on Friday, after a 4-rig increase in the week prior.

Feb 21 (Reuters) - U.S. energy firms this week added oil and natural gas rigs for a fourth week in a row to the highest level since June, energy services firm Baker Hughes (BKR.O), opens new tab said ...