| 1 | G A W Oil Company LLC | Enid, OK 73702-3926 | Oil & Gas Operator | Sep 2025 |
| 2 | Gem Oil Company | Albany, TX 76430 | Oil & Gas Operator | Sep 2002 |
| 3 | General Atlantic Resources Inc | Denver, CO 80202 | Oil & Gas Operator | Jan 2022 |
| 4 | Geno Oil & Gas Corp | | Oil & Gas Operator | Sep 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 | Geoquest Energy Inc | Enid, OK 73706-0216 | Oil & Gas Operator | Nov 2015 |
| 8 | Getty Oil Company | Hays, KS 67601 | Oil & Gas Operator | Mar 2015 |
| 9 | Gill-Mac Inc | Nowata, OK 74048 | Oil & Gas Operator | May 1993 |
| 10 | Gilliland Oil And Gas Inc | Hennessey, OK 73742 | Oil & Gas Operator | Sep 2025 |
| 11 | Glenn Supply Company, Inc. | Tulsa, OK 74101 | Oil & Gas Operator | Aug 2025 |
| 12 | Goff D C Revocable Energy Trust | Fayetteville, AR 72702-1465 | Oil & Gas Operator | Jun 2005 |
| 13 | Goff Oil Company | | Oil & Gas Operator | Mar 1993 |
| 14 | Golden Circle Production Co | Seminole, OK 74868 | Oil & Gas Operator | May 2002 |
| 15 | Golden Gas Production Company | Tulsa, OK 74136 | Oil & Gas Operator | Jul 2025 |
| 16 | Golden Gas Service Company | Tulsa, OK 74114 | Oil & Gas Operator | Sep 2025 |
| 17 | Good Vaughn | Enid, OK 73702 | Oil & Gas Operator | Jul 2008 |
| 18 | Graham Royalty LTD | Covington, LA 70434 | Oil & Gas Operator | Jul 2007 |
| 19 | Graves J M | Tulsa, OK 74105 | Oil & Gas Operator | Sep 2007 |
| 20 | Great Northern Gas Company | Denver, CO 80293-0602 | Oil & Gas Operator | Jun 2016 |
| 21 | Green Operating Company Inc | Tulsa, OK 74135 | Oil & Gas Operator | Jun 2025 |
| 22 | Griffin Resources LLC | Breckenridge, TX 76424 | Oil & Gas Operator | Dec 2025 |