| 1 | G E Operating, Inc. | Graham, TX 76450 | Oil & Gas Operator | May 2020 |
| 2 | G. & S. Inc. | Gruver, TX 79040 | Oil & Gas Operator | Nov 2023 |
| 3 | Gasoil, Inc. | Spearman, TX 79081 | Oil & Gas Operator | Dec 2015 |
| 4 | Gda Investments Inc | Oklahoma City, OK 73123-0403 | Oil & Gas Operator | Jun 2025 |
| 5 | General Atlantic Resources Inc | Denver, CO 80202 | Oil & Gas Operator | Jan 2022 |
| 6 | Geodyne Operating Company | Tulsa, OK 74103 | Oil & Gas Operator | Jun 2015 |
| 7 | Gifford Operating Company | Dallas, TX 75206 | Oil & Gas Operator | Jul 2003 |
| 8 | Global Natural Resources Corp. | Houston, TX 77002 | Oil & Gas Operator | May 1998 |
| 9 | Go Oil Corp. | Jacksboro, TX 76458 | Oil & Gas Operator | Oct 2025 |
| 10 | Gothic Energy Corporation | Tulsa, OK 74136 | Oil & Gas Operator | Jul 2015 |
| 11 | Granite Operating Company | Houston, TX 77056 | Oil & Gas Operator | Nov 2012 |
| 12 | Grasen Energy, Inc. | Amarillo, TX 79159 | Oil & Gas Operator | Aug 2013 |
| 13 | Graves Operating | Perryton, TX 79070 | Oil & Gas Operator | Jul 2005 |
| 14 | Graves Operating, LLC | Perryton, TX 79070 | Oil & Gas Operator | Oct 2025 |
| 15 | Gray Operating Company, Inc. | Ardmore, OK 73402 | Oil & Gas Operator | Apr 2018 |
| 16 | Grizzly Op Of Delaware, LLC | Houston, TX 77057 | Oil & Gas Operator | Mar 2021 |
| 17 | GS Energy Of Texas, L.L.C. | Oklahoma City, OK 73102 | Oil & Gas Operator | May 2006 |
| 18 | Guest R E Oil Producer | Edmond, OK 73083-0805 | Oil & Gas Operator | Mar 2015 |
| 19 | Gulf Central Petroleum Corp. | Dallas, TX 75252 | Oil & Gas Operator | Oct 2025 |
| 20 | Gunn Oil Company | Wichita Falls, TX 76307 | Oil & Gas Operator | Oct 2025 |
| 21 | Gunsmoke Energy Company | Fort Worth, TX 76132 | Oil & Gas Operator | May 2012 |