Chesapeake Energy and Statoil ASA are making a major commitment to drilling in the Marcellus Shale over the next two decades: Statoil holds a 32.5 percent interest in all of Chesapeake’s…acreage. The agreement between the companies covers 1.8 million acres in Appalachia, with more than 32,000 leases in West Virginia, Pennsylvania, New York and Ohio.