Oil prices eased on Tuesday, weighed down by uncertainty over the outcome of an OPEC meeting this week at which an extension to its price-supporting oil output cuts will be discussed.
Prices also briefly came under pressure after a fire broke out at Exxon Mobil's 362,300 barrel-per-day (bpd) Beaumont, Texas, refinery. Firefighters have since put out the blaze but the small crude unit is shut, sources said.
Brent crude oil was down 20 cents a barrel at $63.64 a barrel by 2:28 p.m. ET (1928 GMT). U.S. light crude ended Tuesday's session down 12 cents lower at $57.99, after falling 1.4 percent in the last session.
The Organization of the Petroleum Exporting Countries is heading for tougher-than-expected policy talks on Thursday as its leader Saudi Arabia pushes to extend output cuts by nine months while non-member Russia is hesitating on the curbs' duration due to worries that the market could overheat.
Oil output from Russia's Far Eastern Sakhalin-1 project is set to rise by about a quarter from January, sources with knowledge of the plan told Reuters, signaling Moscow may find it hard to comply with output cuts in tandem with OPEC for the whole of next year.