Chesapeake Energy Corporation is the second-largest producer of natural gas, a Top 15 producer of oil and natural gas liquids and the most active driller of new wells in the U.S. Headquartered in Oklahoma City, the company's operations are focused on discovering and developing unconventional natural gas and oil fields onshore in the U.S. The company also vertically integrated its operations and owns substantial midstream, compression, drilling, trucking, pressure pumping and other oilfield services.​​