"Commodity prices have given back some of the previous week's gains, due in part to some mixed signals from the US and Chinese economies," said research group Capital Economics.
"Oil prices have fallen back... As supply remains abundant," they added in a note to clients.
Today, US benchmark West Texas Intermediate for delivery in November slid to USD 46.67 a barrel compared with $49.63 a barrel one week earlier.
Brent North Sea crude for December delivery stood at USD 49.93 a barrel compared with USD 52.65 a barrel for the expired November contract one week earlier.
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"Russia expressed a willingness to talk with OPEC countries about possible production cuts at a meeting next week," said Commerzbank analyst Carsten Fritsch.
"We believe the chances of this yielding any concrete results are very slight," noted Fritsch.
Russia is among the world's top oil producers alongside OPEC kingpin Saudi Arabia and the United States.
Oil prices fell yesterday as the United States reported an increase in already high crude stockpiles, adding to concerns about the global supply glut.
"News that Russia is not ruling out possible production cuts offset the increase in US stockpiles," said Bernard Aw, market strategist at IG Markets in Singapore.
"Broadly speaking, oil prices are largely supported due to expectation that non-OPEC production will begin to decline, while global demand is likely to pick up next year, according to OPEC forecast," he told AFP.
OPEC has said that its output rose by 110,000 barrels per day to 31.5 million in September as the group continued to pump above its target.