Brent crude oil for May was up 24 cents, 0.3%, to 83.69 a barrel at 0214 GMT.
Oil prices continue to be supported by expectations for a strong rebound in demand in China, the world's second-largest crude consumer.
U.S. oil inventories rose by 6.2 million barrels in the week ended Feb. 24, according to market sources citing American Petroleum Institute (API) figures on Tuesday.
Still, gasoline inventories declined by 1.8 million barrels and distillate fuels, including diesel and jet fuel, dropped by 340,000 barrels, according to the API data.
In February, OPEC pumped 28.97 million barrels per day (bpd), a Reuters survey found, up by 150,000 bpd from January.