Oil prices pulled back Wednesday even as weekly data from the U.S. Energy Department showed a surprise decrease in crude-oil stockpiles. The U.S. Energy Information Administration said crude-oil inventories declined by 754,000 barrels in the latest week. Analysts surveyed by The Wall Street Journal expected an increase of 3.7 million barrels and the American Petroleum Institute, an industry group, had reported a 2.4 million-barrel…