Oil prices fell further on Friday as swelling inventories depressed sentiment despite widespread expectations that OPEC and Russia would agree some form of production cut next week.
The two global oil benchmarks, North Sea Brent and U.S. light crude, have had their weakest month for more than 10 years in November, losing more than 20 percent as global supply has outstripped demand.
U.S. West Texas Intermediate was down 52 cents, or 1 percent, at $50.93, after earlier falling as low as $49.65 Brent was down 76 cents, or 1.3 percent, at $58.75 a barrel by 2:28 p.m. ET, having bounced from a session low of $58.25.
Prices pared losses from session lows after Bloomberg reported OPEC's advisory committee suggested decreasing production by 1.3 million barrels per day (bpd) from last month's levels, traders said.
"Oil prices bounced back late in the day on Friday on reports that the OPEC committee had suggested a 1.3 million barrel per day cut from the October level," said Fawad Razaqzada, market analyst at futures brokerage Forex.com.