Oil prices rose around 1% on Wednesday, extending overnight gains, after industry data showed U.S. crude stocks fell more than expected last week in the wake of two hurricanes, highlighting tight supply as demand improves. U.S. West Texas Intermediate (WTI) crude futures rose 75 cents, or 1.1%, to $71.24 a barrel, adding to a 35 cent gain from Tuesday. Brent crude futures climbed 68 cents, or 0.9%, to $75.04 a barrel, after gaining 44 cents on Tuesday. After coming under pressure on Monday on broader market jitters over the possible default of Chinese property developer China Evergrande Group, the oil market's focus turned to tight supply issues. U.S. crude stocks fell by 6.1 million barrels for the week ended Sept. 17, market sources said, citing figures from the American Petroleum Institute on Tuesday. That was a much bigger decline than the 2.4 million barrel drop in crude inventories which 10 analysts polled by Reuters had expected on average. Supply is expected to remain tight after Royal Dutch Shell, the largest U.S. Gulf of Mexico producer, said damage to its offshore transfer facilities would cut production into early next year.