Reuters | Oil prices slip as reviving shale balances OPEC cuts Reuters "The general perception is that OPEC is cutting production, which is supporting prices, but high stock levels, rising rig counts and growing U.S. production are capping gains," said Tamas Varga, analyst at London brokerage PVM Oil Associates. Oil prices rise on the heels of sharp losses; production data ahead Oil Markets On A Knife Edge Despite 91 Percent OPEC Compliance Oil prices to stay volatile as rising US output and inventories offsetting Opec output cuts |