US Energy Information Administration released the same day the report showed that last week's U.S. national commercial crude oil inventories rose 2.2 million barrels, the market was rather surprised, driving the day the oil prices lower investors had expected crude oil inventories fell 2.9 million barrels last week.
In the meantime, international oil prices rose sharply earlier this week. New York oil prices hit a new high since July 2015 and traders continued to take profit-taking operations to a certain extent under pressure on the same day.
As of the close of the trading on the New York Mercantile Exchange, light sweet crude for delivery in December dropped 0.39 U.S. dollars to close at 56.81 U.S. dollars, down 0.68%. The Brent crude for delivery in January 2018 dropped 0.20 The dollar closed at 63.49 U.S. dollars a barrel, down 0.31%.