Saudi Arabia, the world's biggest crude oil exporter, hinted late last week that it was ready to increase production above record levels to meet strong demand, if needed, sending down prices.
"Momentum points to weaker commodity markets near term. Crude oil prices failed to hold at key resistance levels last week," ANZ said on Monday in a morning note, although it added that refinery oil consumption remained high due to healthy margins.
The decline in prices followed two sessions of falls last Thursday and Friday after U.S. crude had risen close to $62 per barrel earlier in the week, a level it only climbed above during one day in May this year.
"U.S. inventory draws have declined steadily since April with the largest draw occurring in the most recent week, driven by higher refinery runs and lower imports. However, we remain concerned that inventories may remain high by autumn and that the slowdown in US production has yet to materialize," Deutsche Bank said.
Front month U.S. crude had fallen 26 cents to $59.70 a barrel by 0123 GMT.
Brent futures were down 44 cents at $63.43 a barrel.
The smaller drop in U.S. prices was a result of a large tropical disturbance in the southern Gulf of Mexico that is seen by the U.S. National Hurricane Center to have a 70 percent chance of developing into a tropical cyclone over the next 48 hours, potentially threatening oil production output in the region.
