Oil drops 6% as U.S. stockpiles rise by biggest amount in 14 years

' height='259' alt='oil pump oilfield derrick pumpjack shale Kern River' width='460' src='http://news.guugll.com/wp-content/uploads/2015/04/oil-drops-6-as-u-s-stockpiles-rise-by-biggest-amount-in-14-years.jpg' />

The price of a barrel of the North American oil benchmark sank six per cent on Wednesday after new data showed oil inventories are rising to the highest levels on record.

• Tweet
•