A crude oil pump jack in Texas, US. The country's crude and gasoline stockpiles rose to a record 538.1 million barrels last week, according to government data. US crude oil inventories rose to a record 538.1 million barrels, as cheap imports from Saudi Arabia flowed into the country.Photo: Reuters
A crude oil pump jack in Texas, US. The country's crude and gasoline stockpiles rose to a record 538.1 million barrels last week, according to government data. US crude oil inventories rose to a recorShow more

Oil extends slump on fresh concerns over supply-demand balance