A meeting proposed by Russia and Saudi Arabia to discuss output limits has been pushed back to April from March 20, after signs some key producing nations do not support the move.
Iran has said it would not join the effort until its own crude production reached pre-sanction levels of 4.0 million barrels per day, about double its current output.
At about 0900 IST, US benchmark West Texas Intermediate (WTI) for delivery in April was down 23 cents to USD 36.95 and Brent for May was down 29 cents to USD 39.24 a barrel.
"I remain sceptical on any such supply talks as the probability of any definitive action is unlikely to be high," said Bernard Aw, market strategist at IG Markets Singapore.
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Even if the talks happen, the meeting's agenda is freezing production - a stop gap measure - rather than the more long- term goal of cutting output to reduce the global crude oversupply, Aw noted.
"What I fear is that any breakdowns in the proposed talks, if there even is a meeting, will drag oil prices through the mud again," he said.
Singapore trade minister S Iswaran told a gas conference today that crude prices are likely to remain USD 30-50 per barrel this year due to oversupply, a slowing Chinese economy and Japan restarting nuclear power plants.
Traders are also watching for US economic data and meeting of Federal Reserve policy makers starting today for clues on whether they will announce another interest rate hike.
A rate increase is a boost to the dollar, which would make dollar-priced oil more expensive, hurting demand and prices. The Fed raised rates for the first time in nearly a decade in December.