| 1 | Gaither Petroleum Corporation | Katy, TX 77493 | Oil & Gas Operator | Oct 2025 |
| 2 | Gei Management Co., Inc. | Houston, TX 77024 | Oil & Gas Operator | Sep 1993 |
| 3 | Gemini Exploration Company | Dallas, TX 75219 | Oil & Gas Operator | Mar 1997 |
| 4 | Genepa Petroleum Company | Spring, TX 77379 | Oil & Gas Operator | Oct 2025 |
| 5 | General Oil Company, Inc. | Wichita, KS 67213 | Oil & Gas Operator | Oct 2025 |
| 6 | Genie Corporation | Abilene, TX 79604 | Oil & Gas Operator | Mar 2008 |
| 7 | Geonatural Resources, Inc. | Dallas, TX 75240 | Oil & Gas Operator | Oct 2025 |
| 8 | Geosouthern Energy Corporation | The Woodlands, TX 77380 | Oil & Gas Operator | Oct 2025 |
| 9 | Geosouthern Operating II, LLC | The Woodlands, TX 77380 | Oil & Gas Operator | Oct 2025 |
| 10 | Gifford Operating Company | Dallas, TX 75206 | Oil & Gas Operator | Jul 2003 |
| 11 | Ginger Petroleum Company, Inc. | La Grange, TX 78945 | Oil & Gas Operator | Oct 2025 |
| 12 | Glade Operating, LLC | San Antonio, TX 78280 | Oil Operator | Oct 2025 |
| 13 | Goldking Prod. Co. | Houston, TX 77002 | Oil & Gas Operator | Apr 1998 |
| 14 | Goldston Oil Corporation | Houston, TX 77257 | Oil & Gas Operator | Oct 2025 |
| 15 | Great West Energy & Expl., Inc. | Addison, TX 75001 | Oil & Gas Operator | Mar 2008 |
| 16 | Great Western Drilling Co | Midland, TX 79701 | Oil & Gas Operator | Oct 2025 |
| 17 | Gsi Oil & Gas, Inc. | Bryan, TX 77806 | Oil & Gas Operator | Oct 2025 |