Oil prices rose on Wednesday amid a share market recovery and supported by a report that U.S. crude inventories fell last week, although analysts warned that soaring U.S. output and a seasonal demand drop could soon weigh on crude.
Brent crude futures were at $67.44 per barrel at 0235 GMT, up 58 cents, or 0.9 percent, from the previous close.
U.S. West Texas Intermediate (WTI) crude futures were at $64.04 a barrel. That was up 65 cents, or 1 percent, from their last settlement.
The higher oil futures came after stock markets recovered some of their steep losses of previous days.
The market was supported by a report by the American Petroleum Institute (API) saying that U.S. crude inventories fell by 1.1 million barrels in the week to Feb. 2 to 418.4 million barrels, traders said.
A group of oil producers around OPEC and Russia have been withholding supplies since last year in order to tighten supplies and prop up prices. The cuts are set to last through 2018.
"Evidence points to a global inventory market that has arguably already balanced â€“ with days of forward cover in the low single digits or possibly even lower - which should support the spot price going forward," said Richard Robinson, manager of the Ashburton Global Energy fund.
Other analysts, however, warned of the risk of lower oil prices, both from financial markets and because of weaker seasonal demand.
In the short-term, demand is expected to slow due to refinery maintenances at the end of the northern hemisphere winter season.
"The combination of rising risk-aversion and fading short-term fundamental support continues to put downward pressure on oil," said Ole Hansen, head of commodity strategy at Saxo Bank.
Looming over oil markets is rising U.S. crude production, which has already soared by 18 percent to almost 10 million barrels per day (bpd).
The U.S. Energy Information Administration (EIA) expects U.S. output to rise to an average of 10.59 million bpd in 2018, and then 11.18 million bpd by 2019.
That would be more than top producer Russia, which pumped on average 10.98 million bpd out of the ground in 2017.
"With all the chatter about U.S. production ramping up, there could be a growing propensity to move lower near-term," said Stephen Innes, head of trading for Asia/Pacific at futures brokerage Oanda in Singapore.