The owner of the Keystone pipeline issued a force majeure notice to companies that ship oil on the conduit after a leak in ...

U.S. crude oil inventories rose for a second consecutive week, climbing 2.6 million barrels, amid an increase in net imports.

The nearly 2,700-mile Keystone oil pipeline was shut down Tuesday morning after it ruptured in North Dakota, halting the flow of millions of gallons of crude oil.

The cause of the rupture and the total volume of oil released after the North Dakota spill remain unclear, officials said.