Chesapeake Energy Corporation is an energy firm operating within the United States, concentrating on securing, investigating, and developing land to extract crude oil, natural gas, and natural gas liquids (NGLs) from subsurface reservoirs. The company holds significant stakes in several key natural gas production regions across the country. These include the Marcellus Shale in Pennsylvania's Northern Appalachian Basin, the Haynesville field in Northwestern Louisiana, the Eagle Ford in South Texas, the Brazos Valley in Southeast Texas, the Powder River Basin in Wyoming, and the Mid-Continent area located within Oklahoma's Anadarko Basin.