Updated from 10:59 a.m. ESTOPEC's decision to maintain record production levels and a surge in U.S. fuel inventories sent oil prices lower Wednesday. The Organization of Petroleum Exporting Countries said it will keep pumping at 25-year highs to make up for supply disruptions in Nigeria and Iraq. Production in those countries has been down due to rebel attacks on their pipelines. The decision was widely expected after a string of oil ministers said the group should keep output the same. But OPEC, which pumps 40% of the world's crude, may revise quotas when it next meets in Caracas, Venezuela, in June. An Energy Department report also fueled the drop in April crude, which fell $1.56, or 2.5%, to $60.02 a barrel on the Nymex. Crude inventories rose 6.8 million barrels to 335.1 million barrels last week, a 2% increase over the previous week. Analysts had expected crude stocks to rise by 1.75 million barrels last week, according to Bloomberg. Oil supplies, which are 10% higher than last year, are at their highest level since May 1999. Stockpiles have risen thanks to an increase in imports and lower refiner capacity. Refineries, which convert crude into refined products like heating oil, operated at 83% of their capacity last week due to heavy maintenance schedules. That led to a build of crude. While refiners typically shut down in March to retool before summer, there are larger numbers of them closed right now. If they don't come online within a month, imports would have to make up the difference, said Rakesh Shankar, an energy analyst at Economy.com. Stockpiles of unleaded gasoline and distillates both fell because refineries were not producing as much as they usually do. Unleaded gasoline inched up a penny to $1.65 a gallon after inventories of that fuel fell by 1.1 million barrels to 224.8 million barrels. Higher demand for gasoline also contributed to the drop.