China's government is dismantling pandemic restrictions, yet a surge in infections there is prompting tougher travel rules on Chinese visitors in some countries.

Brent crude futures for February delivery fell by a dollar to settle at $82.26, down 1.2%. U.S. West Texas Intermediate crude futures settled at $78.40 per barrel, down by 56 cents, or 0.7%.

Britain is reviewing whether to impose restrictions on people arriving from China. The United States, Japan, India and Taiwan have already imposed testing on arrivals from the country.

"Crude is limping towards the end of the year in thin trading - uninspired by the lifting of COVID restrictions in China amid skyrocketing cases, with little to galvanize crude bulls or bears in today's benign EIA report," said Matt Smith, lead oil analyst at Kpler.

U.S. crude oil inventories rose unexpectedly last week as imports climbed and exports fell, the Energy Information Administration (EIA) said on Thursday.

Despite the surprise build in crude oil stocks, the report itself was "positive" and showed a "solid rebound" in implied oil demand, resulting in large draws of refined products, said Giovanni Staunovo of Swiss bank UBS.

Both oil contracts dipped more than 2% early in Thursday's session, but pared losses as the U.S. dollar slipped, with investors on edge about interest rate hikes.

A weaker dollar makes oil cheaper for holders of other currencies.

"With so many moving parts, I don't think anyone can say anything with any strong degree of conviction," Craig Erlam, senior market analyst at OANDA, said. "OPEC+ could make an announcement at any point and suddenly everything changes. Not to mention Russia's war in Ukraine and how that develops."

Meanwhile, TC Energy Corp said the 622,000-barrel-per-day Keystone pipeline was now operational, weeks after a major oil spill in rural Kansas.

Shutdown of the line hit supplies in the U.S. and briefly lifted oil prices, although there was little change to either benchmark after settlement.

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