The oil price extended losses on Wednesday as government data showed a large, unexpected rise in US crude oil prices as global economic growth prospects dimmed and the stock market slumped.
Brent global reference index fell $ 1.78, or 2.4 percent, to $ 70.68 at 11:12 pm ET (1512 GMT), after a four-month low at 70, Had reached $ 40.
U.S. Light crude fell $ 2.18 a barrel, or 3.3%, to $ 64.86, rebounding from an eight-week low of $ 64.60.
U.S. Commercial crude oil inventories rose 6.8 million barrels a week through August 1
Inventories rose as the country's crude oil imports increased by 1 million barrels a day, while its exports fell by more than 250,000 barrels a day. This compensated for record activity in US refineries, which were 98 percent full.
"Imports of crude oil are simply remarkable," said John Kilduff, founding partner of the energy hedge fund Again Capital. "The fact that we were able to build up so much crude oil in the warehouse, given a 98 percent refinery run, speaks volumes about supply output that hit the market last week."
Stockpiles at the densely populated US distribution center in Cushing, Oklahoma, increased by 1.6 million barrels. Inventories on the east and west coasts increased by more than 2 million barrels.
Stockpiles of petrol were slightly lower than expected, while stocks of distillate fuels, including diesel and heating oil, increased 3.6 million barrels, three times the increase forecast in the Reuters poll.