7月30日电，美国上周EIA原油库存增加769.8万桶，预期减少128.8万桶，前值减少316.9万桶。

Core Insights - The U.S. EIA reported an increase in crude oil inventories by 7.698 million barrels last week, contrary to expectations of a decrease of 1.288 million barrels and a previous decrease of 3.169 million barrels [1] Industry Summary - The increase in crude oil inventories indicates a potential oversupply in the market, which could impact oil prices and trading strategies [1] - The discrepancy between the actual inventory change and market expectations suggests volatility in the oil market, highlighting the importance of monitoring inventory levels closely [1] - The previous week's decrease in inventories was significantly lower than the current increase, indicating a shift in supply dynamics [1]