 News from the Radio Oklahoma News Network. I'm Bob Sands. Devon Energy's made a deal to buy up a private equity firm that has oil and gas holdings in the Williston Basin. The $5 billion deal involves an area that covers parts of Montana, North Dakota, South Dakota, and southern Saskatchewan. The area is rich in oil and gas and potash. The deal involves the Grayson Mill Energy Company. They wanted $350 million and got about 10% of that.