Southwestern Energy Company was a natural gas exploration and production company organized in Delaware and headquartered in Spring, Texas.[1] In October 2024, the company merged into Expand Energy.
The company's primary exploration and production activities were in the Appalachian Basin in Pennsylvania and West Virginia, as well as the Haynesville Shale. The company also controlled 2,518,519 net undeveloped acres in New Brunswick, Canada, subject to an indefinite moratorium on hydraulic fracturing.[1]
As of December 31, 2023, the company had 19.660 trillion cubic feet of natural gas equivalent of estimated proved reserves, of which 77% was natural gas, 20% was natural gas liquids, and 3% was petroleum.[1]