UPDATE 1-U.S. oil drillers add rigs for 4th week in five -Baker Hughes

(Adds benchmarks, basin and offshore details, total average cuts in the first half of 2016) July 1 (Reuters) - U.S. drillers this week added oil rigs for a fourth week in five, according to a closely followed report Friday, in the best month of producers returning to the well pad since August that signaled a near-two year rout in drilling may have ended. Drillers added 11 oil rigs in the week to July 1, the biggest weekly increase since December, bringing the total rig count up to 341