Chesapeake Energy Corporation is an American oil and natural gas exploration and production company, that acquires, surveys, and develops properties for energy production in the United States. The company operates in three key areas: the Marcellus Shale, the Haynesville/Bossier Shales, and the Eagle Ford Shale, all of which are rich in natural resources. As of December 2021, Chesapeake owned interests in over 8,200 productive wells and had an estimated proved reserve of 661 million barrels of oil equivalent.