| 1 | G & C Petroleum Inc | Yale, OK 74085-2502 | Oil & Gas Operator | Jan 2024 |
| 2 | General Atlantic Resources Inc | Denver, CO 80202 | Oil & Gas Operator | Jan 2022 |
| 3 | Genesis Inc | Seminole, OK 74818-1647 | Oil & Gas Operator | Sep 2014 |
| 4 | Geo Engineering Inc | Houston, TX 77027 | Oil & Gas Operator | Jun 2009 |
| 5 | Geodyne Operating Company | Tulsa, OK 74103 | Oil & Gas Operator | Jun 2015 |
| 6 | Geodyne Resources Inc. | Tulsa, OK 74103 | Oil & Gas Operator | Jul 2010 |
| 7 | Geoex Resources Inc | | Oil & Gas Operator | Jan 1997 |
| 8 | GMX Resources, Inc. | Oklahoma City, OK 73114 | Oil & Gas Operator | Mar 2014 |
| 9 | Goff D C Revocable Energy Trust | Fayetteville, AR 72702-1465 | Oil & Gas Operator | Jun 2005 |
| 10 | Golden Gas Production Company | Tulsa, OK 74136 | Oil & Gas Operator | Nov 2023 |
| 11 | Gothic Energy Corporation | Tulsa, OK 74136 | Oil & Gas Operator | Jul 2015 |
| 12 | GPM Gas Corporation | Oklahoma City, OK 73102-5627 | Oil & Gas Operator | Jun 2000 |
| 13 | Graham Royalty LTD | Covington, LA 70434 | Oil & Gas Operator | Jul 2007 |
| 14 | Graham-Michaelis Corporation | Wichita, KS 67201 | Oil & Gas Operator | Dec 2010 |
| 15 | Grand Resources Inc | Tulsa, OK 74137 | Oil & Gas Operator | Apr 2024 |
| 16 | Grasen Energy, Inc. | Amarillo, TX 79159 | Oil & Gas Operator | Aug 2013 |
| 17 | Green Valley Disposal Serv LLC | Waynoka, OK 73860-0194 | Oil Operator | Dec 2023 |
| 18 | Greenhead Energy Operating LLC | | Oil & Gas Operator | Jan 2024 |
| 19 | Gribble Oil Corporation | Dallas, TX 75235 | Oil Operator | Aug 1994 |
| 20 | Griffin Resources LLC | Breckenridge, TX 76424 | Oil & Gas Operator | Apr 2024 |
| 21 | Grizzly Operating LLC | Houston, TX 77057 | Oil & Gas Operator | Jan 2024 |
| 22 | Gruenerwald WM & Assoc Inc | Colorado Spring, CO 80960-0669 | Oil & Gas Operator | Jan 2002 |
| 23 | Grynberg Petroleum Company | Greenwood Vge, CO 80111-3326 | Oil & Gas Operator | Oct 2019 |
| 24 | Gulf Production Corporation | Oklahoma City, OK 73114 | Oil & Gas Operator | Apr 2015 |
| 25 | Gypsyglenn Oil Company LLC | | Oil & Gas Operator | Jan 2024 |