US WTI crude had climbed 27 cents to $44.94 a barrel and Brent crude rose 32 cents to $46.29 a barrel
Major oil producers are gathering in Algeria for a three-day meeting that could see moves to cut or freeze oil output
US West Texas Intermediate crude fell 6 cents to $45.87 a barrel, after rising $1.45
Brent crude futures slipped 43 cents to $46.91 a barrel after closing up $1.46, or 3.2%
Concern about global oversupply has depressed oil prices since mid-2014
US EIA on Wednesday reported a 6.2 million-barrel drop in crude oil inventories last week to 504.6 million barrels
Overall, however, oil markets remain oversupplied as exporters around the world pump near record amounts
Technical market indicators were also weak, with WTI likely to test support at $42.78 per barrel soon
Libya is resuming oil exports from some of its main ports and ExxonMobil has a pipeline prepared to export Nigeria's Qua Iboe crude oil
Adding to the downward pressure has been a pick-up in the dollar and signs that demand remains weak
US benchmark West Texas Intermediate crude futures were down 86 cents, or 1.87 per cent, at $45.02 a barrel
US drillers added oil rigs for a tenth week in the past 11
Traders hope for a deal on stabilising crude output after Saudi Arabia and Russia agreed on Monday to cooperate in oversupplied markets
IEA has said it sees demand finally exceeding supply in the third quarter of 2016
Traders are not betting big on OPEC and rival Russia clinching a meaningful deal this month to control output
NYMEX crude for October delivery was down 40 cents at $47.22 after settling up $2.12
Gasoline futures jumped 5 percent after the data release, on higher than expected draws
The US government said on August 29 that 11.5 per cent of Gulf of Mexico output was shut in as a precautionary measure
London Brent crude for November delivery climbed 75 cents to $48.73 a barrel and NYMEX crude for October delivery was up 79 cents at $46.29
London Brent crude for November delivery was up 23 cents at $47.49 a barrel