| Subsidiary Name | Location of Incorporation or Organization | |||||||
| Angelina Gathering Company, LLC | Texas | |||||||
| A.W. Realty Company, LLC | Texas | |||||||
| SW Gathering, LLC | Delaware | |||||||
| SWN Drilling Company, LLC | Texas | |||||||
| SWN E & P Services, LLC | Texas | |||||||
| SWN Energy Services Company, LLC | Texas | |||||||
| SWN International, LLC | Delaware | |||||||
| SWN Midstream Services Company, LLC | Texas | |||||||
| SWN Production Company, LLC | Texas | |||||||
| SWN Production (Louisiana), LLC | Texas | |||||||
| SWN Resources Canada, Inc. | British Columbia, Canada | |||||||
| SWN Water Resources Company, LLC | Texas | |||||||
| SWN Well Services, LLC | Texas | |||||||