U.S. drillers add oil rigs for 3rd week in a row -Baker Hughes

Dec 8 (Reuters) - U.S. energy companies this week added oil rigs for a third week in a row, the longest string of increases since summer, as higher crude prices prompt drillers to return to the well pad after a break in the autumn. Drillers added two oil rigs in the week to Dec. 8, bringing the total count up to 751, the highest level since September, General Electric Co's Baker Hughes energy services firm said in its closely followed report on Friday.