NORTH DAKOTA: Harsh winter slows down Bakken oil production Mike Lee, E&E reporter Published: Tuesday, February 18, 2014 North Dakota's winter weather cut into production from the Bakken oil field in December, state officials said. Please subscribe to EnergyWire to read the full story. Username: Password: Forgot your access codes? Recover them. Not a subscriber? Sign up for a trial. Ready to subscribe? Click here.