| 1 | E&B Natural Resources MGT Corp | Bakersfield, CA 93308 | Oil & Gas Operator | Aug 2017 |
| 2 | Eagle Rock Operating Company,LLC | Houston, TX 77252 | Oil & Gas Operator | Oct 2015 |
| 3 | Ecoserv Environmental SVCS, LLC | Abbeville, LA 70510 | Oil Operator | Apr 2024 |
| 4 | Edge Petroleum Oper. Co., Inc. | Houston, TX 77042 | Oil & Gas Operator | Nov 2010 |
| 5 | Eex E&P Company, L.P. | Houston, TX 77060 | Oil & Gas Operator | Jul 2003 |
| 6 | El Paso E&P Company, L.P. | Houston, TX 77002 | Oil & Gas Operator | Mar 2013 |
| 7 | Eland Energy Inc | Dallas, TX 75248 | Oil & Gas Operator | Feb 2024 |
| 8 | Elliott Oil & Gas Company | The Woodlands, TX 77380 | Oil & Gas Operator | Sep 2006 |
| 9 | Elliott Oil & Gas Operating Co. | Magnolia, TX 77354 | Oil & Gas Operator | Apr 2024 |
| 10 | Elliott Oil Company, L.P. | Magnolia, TX 77354 | Oil & Gas Operator | Apr 2024 |
| 11 | Energy Reserves Group LLC | Houston, TX 77002 | Oil & Gas Operator | Mar 2018 |
| 12 | Enron Oil & Gas Company | Houston, TX 77210 | Oil & Gas Operator | Dec 1999 |
| 13 | EOG Resources Inc | Midland, TX 79702 | Oil & Gas Operator | Apr 2024 |
| 14 | EP Energy E&P Company, LLC | Houston, TX 77210 | Oil & Gas Operator | Apr 2024 |
| 15 | EP Energy E&P Company, LP | Houston, TX 77210 | Oil & Gas Operator | May 2022 |
| 16 | Esenjay Exploration, Inc | Houston, TX 77042 | Oil & Gas Operator | Jan 2024 |
| 17 | Estes Operating, LLC | La Porte, TX 77571 | Oil & Gas Operator | Apr 2024 |
| 18 | Etoco Incorporated | Houston, TX 77002 | Oil & Gas Operator | May 2005 |
| 19 | Etoco, L.P. | Houston, TX 77002 | Oil & Gas Operator | Apr 2024 |
| 20 | Exxon Corporation | Houston, TX 77210 | Oil & Gas Operator | Dec 2023 |