| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | E & B Natural Resources Management Corporation | Hays, KS 67601 | Oil & Gas Operator | Dec 2023 |
| 2 | Eastern Pacific Oil Co. | Oil & Gas Operator | Dec 1998 | |
| 3 | Edison Beneficial Reuse | Oil & Gas Operator | Nov 2023 | |
| 4 | Ehb Oil Company | Oil Operator | Dec 2001 | |
| 5 | Elf Aquitaine Inc | Houston, TX 77002 | Oil & Gas Operator | May 1991 |
| 6 | Emjayco L. P. | Oil Operator | Dec 2020 | |
| 7 | Enerfin Resources Northwest Limited Partnership | Oil & Gas Operator | Jan 2022 | |
| 8 | Energy Development Of California Inc. | Oil & Gas Operator | Dec 2004 | |
| 9 | Energy Production & Sales Co. | Oil & Gas Operator | Dec 1999 | |
| 10 | Engineers Oil Company | Oil & Gas Operator | Dec 2023 | |
| 11 | EOG Resources Inc | Midland, TX 79702 | Oil & Gas Operator | Apr 2024 |
| 12 | Etchegoin Oil LLC | Oil & Gas Operator | Dec 2023 | |
| 13 | Exxon Mobil Corporation | Spring, TX 77389 | Oil & Gas Operator | Apr 2024 |