Whiting Petroleum (NYSE:WLL) +11.3% premarket on a report that Statoil (STO) approached the...

Whiting Petroleum (NYSE:WLL) +11.3% premarket on a report that Statoil (STO) approached the company with a takeover bid worth up to $7.6B. WLL and STO are among the top producers in the Bakken shale formation in North Dakota, and STO has said it wants to pick up further shale acreage in the U.S.