美国至8月1日当周API原油库存减少423.3万桶，预期减少184.5万桶，前值增加153.9万桶

Core Insights - The API crude oil inventory in the U.S. decreased by 4.233 million barrels for the week ending August 1, which was a larger decline than the expected decrease of 1.845 million barrels [1] - The previous week's inventory showed an increase of 1.539 million barrels, indicating a significant shift in inventory levels [1] Summary by Category - Inventory Changes - U.S. crude oil inventory decreased by 4.233 million barrels [1] - Expected decrease was 1.845 million barrels, highlighting a larger-than-anticipated drop [1] - Prior week saw an increase of 1.539 million barrels, showing a reversal in trend [1]