| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | Edisto Resources Corp | Houston, TX 77057 | Oil & Gas Operator | Oct 1999 |
| 2 | Empire Energy E & P LLC | Mayville, NY 14757 | Oil & Gas Operator | Dec 2023 |
| 3 | Empire Exploration Inc | Wichita, KS 67202 | Oil & Gas Operator | Jul 1997 |
| 4 | Energy Corp Of Amer | Charleston, WV 25311-1264 | Oil & Gas Operator | Mar 2018 |
| 5 | Enervest Opr LLC | Charleston, WV 25301-1782 | Oil & Gas Operator | Dec 2019 |
| 6 | Envirogas Inc | Hamburg, NY 14075 | Oil & Gas Operator | Dec 1992 |
| 7 | Equitable Resources Energy Company | Big Stone Gap, VA 24219 | Oil & Gas Operator | Dec 1997 |
| 8 | Erie City Erie Cnty | Erie, PA 16501-1149 | Gas Operator | Dec 1999 |
| 9 | Exco Resources Pa Inc | Warrendale, PA 15086-6501 | Oil & Gas Operator | Dec 2011 |