| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | Edgewater Oil Co. Inc. | Oil & Gas Operator | Jul 1995 | |
| 2 | El Paso Exploration Company | Oil & Gas Operator | Jul 1985 | |
| 3 | Elmwood Operating LLC | Oil & Gas Operator | Nov 2023 | |
| 4 | Energy Corp. Of America, Inc. | Oil & Gas Operator | Aug 1998 | |
| 5 | Energy Production Corporation | Kilgore, TX 75663 | Oil & Gas Operator | Apr 2024 |
| 6 | Energy Self-Service Oils, Inc. | Oil & Gas Operator | Apr 2009 | |
| 7 | Enervest Operating LLC | Houston, TX 77002 | Oil & Gas Operator | Apr 2024 |
| 8 | Enlink Lig, LLC | Oil Operator | Jan 2024 | |
| 9 | Extex Operating Company | Houston, TX 77057 | Oil & Gas Operator | Apr 2024 |