| 1 | Amerada Hess Corporation | Houston, TX 77252 | Oil & Gas Operator | Aug 2013 |
| 2 | Columbia Petroleum LLC | Brookhaven, MS 39601 | Oil & Gas Operator | Jul 2024 |
| 3 | Cox Exploration, Inc. | Dallas, TX 75201 | Oil & Gas Operator | Nov 1999 |
| 4 | De Soto Oil & Gas, Inc. | | Oil & Gas Operator | Mar 2006 |
| 5 | De Soto Oil Properties, LLC | | Oil & Gas Operator | Jul 2024 |
| 6 | Energy Recovery Group, LLC | | Oil & Gas Operator | Jul 2008 |
| 7 | Fairways Exploration & Production, LLC | Houston, TX 77057 | Oil & Gas Operator | Dec 2024 |
| 8 | Fina Oil And Chemical Company | Dallas, TX 75221 | Oil & Gas Operator | May 2019 |
| 9 | Fletcher Petroleum Corp. | Fairhope, AL 36533 | Oil & Gas Operator | Sep 2024 |
| 10 | Great Western Onshore Inc | Houston, TX 77002 | Oil & Gas Operator | Mar 2008 |
| 11 | Gulf Coast Mineral, LLC | Foley, AL 36535 | Oil & Gas Operator | Jul 2021 |
| 12 | Marco Land & Petroleum, Inc. | | Oil & Gas Operator | Jun 2000 |
| 13 | Midroc Operating Company | | Oil & Gas Operator | Apr 2013 |
| 14 | Pruet Production Co. | Jackson, MS 39201 | Oil & Gas Operator | Sep 2024 |
| 15 | Sklar Exploration Company LLC | Shreveport, LA 71101 | Oil & Gas Operator | Dec 2024 |
| 16 | Stetson Petroleum Corp. | Rollins, MT 59931 | Oil & Gas Operator | Dec 2024 |
| 17 | TC3 Operating Co. | Dallas, TX 75248 | Oil & Gas Operator | Jul 1996 |
| 18 | Ventex Operating Corp. | Addison, TX 75001 | Oil & Gas Operator | Dec 2024 |
| 19 | Venture Oil & Gas, Inc. | Laurel, MS 39440 | Oil & Gas Operator | Sep 2024 |
| 20 | Wheless Industries, Inc. | Shreveport, LA 71101-5301 | Oil & Gas Operator | Sep 2002 |
| 21 | Whitmar Exploration Company | Denver, CO 80202 | Oil & Gas Operator | Sep 2024 |