SINGAPORE - Oil prices eased on Wednesday as the possibility of higher OPEC output weighing on the market, although geopolitical risks are expected to keep prices near multi-year highs.
Brent futures fell 37 cents, or nearly 0.5 percent, to $79.20 a barrel by 0636 GMT, after climbing 35 cents on Tuesday. Last week, the global benchmark hit $80.50 a barrel, the highest since November 2014.
U.S. West Texas Intermediate (WTI) crude futures eased 21 cents, or nearly 0.3 percent, to $71.99 a barrel, having climbed on Tuesday to $72.83, also the highest since November 2014.
"It looks like the market is pausing at current levels," said Michael McCarthy, Chief Market Strategist at brokerage CMC Markets.
"If sanctions are introduced against Iran, most of the OPEC producers would like to be pumping more oil, particularly giving the higher prices."
The Organization of the Petroleum Exporting Countries (OPEC) may decide to raise oil output as soon as June due to worries over Iranian and Venezuelan supply and after Washington raised concerns the oil rally was going too far, OPEC and oil industry sources familiar with the discussions told Reuters.
OPEC-led supply curbs have largely cleared an inventory surplus in industrialized countries based on the deal's original goals and stocks continue to decline.
"...Investors are mindful of upcoming talks between Russia and Saudi Arabia about whether they should look at a controlled relaxation of over-compliance with their output cut agreement," ANZ said in a note.
Rising supply in the United States, where shale production is forecast to hit a record high in June, has limited the upward move in prices.
Concerns about a potential drop in Iranian oil exports following Washington's exit from a nuclear arms control deal with Tehran have driven prices to multi-year highs.
On Monday, the United States demanded Iran make sweeping changes - from dropping its nuclear program to pulling out of the Syrian civil war - or face severe economic sanctions.
Iran dismissed Washington's ultimatum and one senior Iranian official said it showed the United States is seeking "regime change" in Iran.
In addition, Venezuela's crude output could drop further following a disputed presidential election.
The United States is actively considering oil sanctions on Venezuela, where output has dropped by a third in two years to its lowest in decades.
U.S. crude and distillate stockpiles fell last week, while gasoline inventories increased unexpectedly, data from industry group the American Petroleum Institute showed on Tuesday.