NEW YORK (MarketWatch) -- Oil stocks slipped in early trading Wednesday as worries over Chinese inflation-fighting efforts dented oil prices for a second day. Natural-gas stocks tipped higher. The NYSE Arca Oil (XOI 1,096, -1.68, -0.15%) index fell 0.3% and the Philadelphia Oil Service Sector index (OSX 217.92, -0.26, -0.12%) lost 0.1%. Among the biggest losers, Hess Corp. (HES 66.90, -0.88, -1.30%) fell 1.8% and Anadarko Petroleum Corp. (APC 62.14, -0.89, -1.41%) lost 1.6%. Consol Energy Inc. (CNX 40.61, +0.74, +1.86%) shares gained 0.8%, riding a 3.4% jump in natural-gas futures. Oil futures slid 1% to $82.08 a barrel. CVR Energy (CVI 10.03, -1.00, -9.07%) shares tumbled 9%. Late Tuesday it said some of its stockholders, including Goldman Sachs (GS 164.35, -0.75, -0.46%) were planning to sell 15 million share of the company to the public.