| 1 | E.G.L. Resources, Inc. | Midland, TX 79702 | Oil & Gas Operator | Feb 2024 |
| 2 | Eagle Energy | Midland, TX 79710 | Oil & Gas Operator | Sep 1999 |
| 3 | Eagle Oil & Gas Co. | Dallas, TX 75225 | Oil & Gas Operator | Apr 2024 |
| 4 | Eagle Rock Operating Company,LLC | Houston, TX 77252 | Oil & Gas Operator | Oct 2015 |
| 5 | Earnest Producing Corporation | Midland, TX 79704 | Oil & Gas Operator | Apr 2024 |
| 6 | Eason Production Company | Atlanta, TX 75551 | Oil & Gas Operator | May 2007 |
| 7 | Eclipse Oil & Gas, Inc. | Midland, TX 79703 | Oil & Gas Operator | Apr 2024 |
| 8 | Ecoserv Environmental SVCS, LLC | Abbeville, LA 70510 | Oil Operator | Apr 2024 |
| 9 | Edwards-Foster, Inc. | Midland, TX 79708 | Oil & Gas Operator | Aug 1996 |
| 10 | Eggleston, Garaland | Big Lake, TX 76932 | Oil & Gas Operator | Aug 2003 |
| 11 | El Reno Energy, LLC | Granbury, TX 76048 | Oil & Gas Operator | Apr 2024 |
| 12 | Elam, Jack G. | Midland, TX 79702 | Oil & Gas Operator | Dec 2002 |
| 13 | Elam, Jack G., Inc. | Midland, TX 79702 | Oil & Gas Operator | Nov 2002 |
| 14 | Elco Oil & Gas | San Angelo, TX 76902 | Oil & Gas Operator | Dec 2014 |
| 15 | Emerald Production Company | Midland, TX 79702 | Oil & Gas Operator | Jun 1995 |
| 16 | Encana Oil & Gas (USA) Inc. | Denver, CO 80202 | Oil & Gas Operator | Oct 2020 |
| 17 | Encore Operating LP | Plano, TX 75024 | Oil & Gas Operator | Feb 2024 |
| 18 | Endeavor Energy Resources, LP | Midland, TX 79701 | Oil & Gas Operator | Apr 2024 |
| 19 | Enduring Resources, LLC | Greenwood VLG, CO 80111 | Oil & Gas Operator | Feb 2024 |
| 20 | Energen Resources Corporation | Midland, TX 79701 | Oil & Gas Operator | Jan 2021 |
| 21 | Energy Development Corporation | Houston, TX 77067 | Oil & Gas Operator | Dec 2023 |
| 22 | Energy Transfer Fuel, LP | Houston, TX 77002 | Oil & Gas Operator | Apr 2005 |
| 23 | Energyquest II, LLC | The Woodlands, TX 77381 | Oil & Gas Operator | Jan 2024 |
| 24 | Enerquest Oil & Gas LLC | Oklahoma City, OK 73114 | Oil & Gas Operator | Feb 2024 |
| 25 | Enerquest Operating, LLC | Oklahoma City, OK 73114 | Oil & Gas Operator | Apr 2024 |
| 26 | Enertex, Inc. | Midland, TX 79702 | Oil & Gas Operator | Aug 1995 |
| 27 | Enervest Operating LLC | Houston, TX 77002 | Oil & Gas Operator | Apr 2024 |
| 28 | Enex Resources Corporation | Houston, TX 77002 | Oil & Gas Operator | Dec 2009 |
| 29 | Engroup Resources, L.P. | Houston, TX 77002 | Oil & Gas Operator | Apr 2024 |
| 30 | Enron Oil & Gas Company | Houston, TX 77210 | Oil & Gas Operator | Dec 1999 |
| 31 | Enserch Exploration Inc | Dallas, TX 75206 | Oil & Gas Operator | Apr 2015 |
| 32 | Enterprise Crude Oil LLC | Oklahoma City, OK 73102 | Oil Operator | Aug 2011 |
| 33 | EOG Resources Inc | Midland, TX 79702 | Oil & Gas Operator | Apr 2024 |
| 34 | EP Operating Limited Partnership | Dallas, TX 75201 | Oil & Gas Operator | Feb 1995 |
| 35 | Ernmar Investments, Inc. | Edmond, OK 73083 | Oil & Gas Operator | Apr 2024 |
| 36 | Escondido Resources II, LLC | Houston, TX 77002 | Oil & Gas Operator | Apr 2017 |
| 37 | Estoril Producing Corporation | Midland, TX 79701 | Oil & Gas Operator | Apr 1994 |
| 38 | Et Gathering & Processing LLC | San Antonio, TX 78258 | Oil Operator | Dec 2023 |
| 39 | Etc Field Services LLC | San Antonio, TX 78258 | Oil Operator | Jun 2018 |
| 40 | Etc Texas Pipeline, LTD. | San Antonio, TX 78258 | Oil Operator | Sep 2023 |
| 41 | Evinger, Ernest E. | Midland, TX 79705 | Oil & Gas Operator | Mar 2002 |
| 42 | Exco Resources Inc | Dallas, TX 75251 | Oil & Gas Operator | Jan 2024 |
| 43 | Exl Petroleum, LP | Midland, TX 79705 | Oil & Gas Operator | Jun 2017 |
| 44 | Exok, Inc | Oklahoma City, OK 73116 | Oil & Gas Operator | Jan 2024 |
| 45 | Expro Engineering, Inc. | Fort Worth, TX 76179 | Oil & Gas Operator | Apr 2024 |
| 46 | Extex Operating Company | Houston, TX 77057 | Oil & Gas Operator | Apr 2024 |
| 47 | Exxon Corporation | Houston, TX 77210 | Oil & Gas Operator | Dec 2023 |
| 48 | Exxon Mobil Corporation | Spring, TX 77389 | Oil & Gas Operator | Apr 2024 |