New York's main contract, West Texas Intermediate (WTI) for delivery in January dipped 12 cents to USD 92.18 per barrel. Brent North Sea crude for January declined 43 cents to stand at USD 110.88 a barrel in London late afternoon trade.
Crude futures also sank on Wednesday after the US government's Department of Energy reported that commercial stocks of oil increased by three million barrels last week.
That was well above the 500,000 barrels forecast by analysts in a Wall Street Journal survey, and stoked concerns about oversupply in the world's biggest economy.
"WTI crude oil suffered significant losses over the last two days, mostly driven by stockpiles concerns in the US," Singapore-based brokers Phillip Futures said in a note.
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"High US stockpiles are likely to be contributed by persistent strong production in the nation," it said, adding that output hit 8.02 million barrels in the week to November 22, the highest level since January 1989.
US oil prices traded above USD 100 a barrel for much of the summer, but have dipped below that since October 21 due to rising supplies and easing geopolitical tensions, including Washington's decision to hold off military action in Syria and better relations with Iran.
Protesters with a wide range of demands have been blocking oil and gas export terminals since late July, causing revenues to plunge 80 per cent.