U.S.oil prices rose near 8 percent on Wednesday, after an unexpected drop in crude inventories.

Crude inventories fell by 3.3 million barrels in the week to Feb. 12 to 499.1 million, compared with analysts' expectations for an increase of 3.9 million barrels. Crude stocks at the Cushing, Oklahoma, delivery hub dipped by 175,000 barrels, API said.