Reuters | Oil slips $1 on concerns US production is rising Reuters Last week, U.S. energy companies added oil rigs for a 10th week in a row, Baker Hughes data showed, extending a recovery in activity into an eighth month as crude prices remained at levels at which many drillers can operate profitably. This raised ... Oil prices start the week lower after jump in US rig count Oil Falls as OPEC Output Curbs Offset by Growth in U.S. Drilling Oil prices fall: Iran exports surge, US adds oil rigs |