| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | El Toro Production Co., Inc. | Oil & Gas Operator | Jan 2016 | |
| 2 | Energy Reserves Group | Houston, TX 770563020 | Oil & Gas Operator | Apr 1996 |
| 3 | Eram, Inc. | Oil & Gas Operator | Jan 2024 | |
| 4 | Est. Of H. L. Hunt | Oil & Gas Operator | Jun 1983 | |
| 5 | Ethyl Properties Inc. | Oil & Gas Operator | Aug 1989 | |
| 6 | Eurovest Oil & Gas, Inc. | Graham, TX 76450 | Oil & Gas Operator | Mar 2008 |
| 7 | Exxon Corporation | Houston, TX 77210 | Oil & Gas Operator | Nov 2023 |