Crude prices fell on Monday amid doubts about production cuts from OPEC, which hurt prices and dragged them lower.
U.S. crude futures last traded at $52.26 a barrel, down from the opening of $52.48, with an intraday high at $52.69, and a low at $52.10.
Doubts about production cuts from OPEC comes as the deal imposes a but of 1.2 million bpd to a total of 32.5 million bpd by the start of January.
Crude's drop today comes amid concerns that OPEC members are following the deal guidelines, which would reinforce the current market oversupply and hurt prices.
On the other hand, analysts expect the U.S. to ramp up production this year, which pushed prices lower, while the dollar recovered against main currencies.