Oil rises for sixth session on US data, geopolitical tension

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Brent, WTI gain about 6% since last week's lows

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Oil set for biggest annual decline since 2020

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US economy grew faster than expected in the third quarter

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Weekly US crude, fuel stocks rose last week - API

(Updates prices, adds analyst comment, changes dateline to LONDON)

By Ahmad Ghaddar

LONDON, Dec 24 (Reuters) - Oil prices rose slightly for a ?sixth day on Wednesday, supported by robust U.S. economic growth and the risk of supply disruptions from Venezuela and Russia, though prices ?were on course for their steepest annual decline since 2020.

Brent crude futures climbed 15 cents, ?or 0.2%, to $62.53 a barrel by 0908 GMT, while U.S. West ?Texas Intermediate crude added ?18 cents, or 0.3%, to $58.56.

Both contracts have gained about 6% since December 16, when they plunged to near five-year lows.

"What ?we've seen over the past week is a ?combination of position squaring in thin markets, after last week's breakdown failed to gain traction, coupled with heightened geopolitical tensions, including the U.S. blockade on Venezuela and ?supported by last night's robust GDP data," IG ?analyst Tony Sycamore ?said.

U.S. data showed the world's largest economy grew at its fastest pace in two years in the third quarter, fueled by robust consumer spending and a sharp rebound ?in exports.

Still, Brent and WTI prices are on track to drop about 16% and 18%, respectively, this year - their steepest declines since 2020 when the COVID-19 pandemic decimated oil demand.

"Despite these supply risks, oil ... is on track for its biggest annual decline since 2020 as supply is expected to outpace demand," MUFG analyst Soojin Kim said.

On the supply side, disruptions to Venezuelan ?exports have been ?the most significant factor pushing up oil prices, while Russia's and Ukraine's continued attacks on each other's energy infrastructure have also supported the market, Haitong Futures said in ?a report.

More than a dozen loaded vessels are in Venezuela waiting for new directions from their owners after the U.S. seized the supertanker Skipper earlier this month and targeted two additional vessels over the weekend.

U.S. President Donald Trump last week announced a "blockade" of all vessels under sanctions entering or departing from Venezuela to increase pressure on Venezuelan President Nicolas Maduro.

Meanwhile, U.S. crude inventories rose by 2.39 million barrels last week, while gasoline stocks ?increased by 1.09 million barrels and distillate inventories rose by 685,000 barrels, market sources said, citing American Petroleum Institute figures on Tuesday.

The U.S. Energy Information Administration is due to release official inventory data on Monday, later than usual due to the Christmas ?holiday. (Additional reporting by Sam Li in Beijing and Siyi Liu in Singapore; Editing by Tomasz Janowski)