| 1 | Gaea Services, Inc. | San Antonio, TX 78216 | Oil & Gas Operator | Sep 2021 |
| 2 | Gardner Energy Corporation | Houston, TX 77024 | Oil & Gas Operator | Mar 1999 |
| 3 | Garrison LTD. | San Antonio, TX 78257 | Oil & Gas Operator | Mar 2025 |
| 4 | Gasper Rice Resources, LTD. | Houston, TX 77068 | Oil & Gas Operator | Mar 2025 |
| 5 | Geo-Graphic Production, Inc. | Gonzales, TX 78629 | Oil & Gas Operator | Mar 2025 |
| 6 | Geosouthern Energy Corporation | The Woodlands, TX 77380 | Oil & Gas Operator | Mar 2025 |
| 7 | Ginco Operating Co. | San Antonio, TX 78217 | Oil & Gas Operator | Mar 2025 |
| 8 | Glenco Oil & Gas Company | Seguin, TX 78155 | Oil & Gas Operator | Dec 1994 |
| 9 | Global Training Academy, Inc. | Somerset, TX 78069 | Oil Operator | Mar 2025 |
| 10 | Goodnight Midstream Permian, LLC | Dallas, TX 75206 | Oil & Gas Operator | Mar 2025 |
| 11 | Grand Operating, Inc. | Addison, TX 75001 | Oil & Gas Operator | Dec 2020 |
| 12 | Great Bay Operations, LLC | Portsmouth, NH 03801 | Oil & Gas Operator | Nov 2016 |
| 13 | Great Plains Resources, Inc. | Nixon, TX 78140 | Oil & Gas Operator | Mar 2025 |
| 14 | Great West Energy & Expl., Inc. | Addison, TX 75001 | Oil & Gas Operator | Mar 2008 |
| 15 | Green Star | Somerset, TX 78069 | Oil Operator | Mar 2025 |
| 16 | Gsi Oil & Gas, Inc. | Bryan, TX 77806 | Oil & Gas Operator | Mar 2025 |
| 17 | Guinn Operating Company | Spring Branch, TX 78070 | Oil & Gas Operator | Feb 2014 |
| 18 | Guinn Operating Company, LLC | San Antonio, TX 78260 | Oil Operator | Mar 2025 |
| 19 | Gulfmark Energy Inc | Houston, TX 77027 | Gas Operator | Apr 2023 |
| 20 | Gulfstar Properties, Inc. | San Antonio, TX 78229 | Oil & Gas Operator | Mar 2025 |
| 21 | Gulftex Energy III, LP | San Antonio, TX 78257 | Oil & Gas Operator | Jul 2018 |
| 22 | Gulftex Energy IV, LP | San Antonio, TX 78257 | Oil & Gas Operator | Jul 2019 |