| 1 | G & S Production Company | Velma, OK 73491-0036 | Oil & Gas Operator | Oct 2021 |
| 2 | G2GH Operating LLC | Edmond, OK 73003-3207 | Oil Operator | Aug 2025 |
| 3 | Galaxy Oil Company | Wichita Falls, TX 76307 | Oil & Gas Operator | Mar 2015 |
| 4 | Gary L. Deaton Corporation | Oklahoma City, OK 73105-3023 | Oil & Gas Operator | Mar 2015 |
| 5 | Gay Drilling Contractors | Duncan, OK 73534-0457 | Oil & Gas Operator | Dec 2014 |
| 6 | Ge Oil & Gas LLC | Hastings, OK 73548-4904 | Oil & Gas Operator | Jan 2025 |
| 7 | General Minerals Corp | Oklahoma City, OK 73105 | Oil & Gas Operator | Dec 2015 |
| 8 | Genesis Energy Corporation | Oklahoma City, OK 73112 | Oil & Gas Operator | Mar 1995 |
| 9 | Geo Exploration LLC | Oklahoma City, OK 73120-7116 | Oil & Gas Operator | Jun 2024 |
| 10 | Geodyne Operating Company | Tulsa, OK 74103 | Oil & Gas Operator | Jun 2015 |
| 11 | Geodyne Resources Inc | Tulsa, OK 74103 | Oil & Gas Operator | Jul 2010 |
| 12 | Germany Operating Company | Houston, TX 77090 | Oil & Gas Operator | Sep 2011 |
| 13 | Gilby Services LLC | Velma, OK 73491 | Oil & Gas Operator | Aug 2025 |
| 14 | Gilco Oil Inc | Ada, OK 74820 | Oil & Gas Operator | May 2019 |
| 15 | Gilliland Oil And Gas Inc | Hennessey, OK 73742 | Oil & Gas Operator | Sep 2025 |
| 16 | Gla Inc | Norman, OK 73070 | Oil & Gas Operator | Sep 2025 |
| 17 | Glacier Petroleum Co Okla Inc | Edmond, OK 73013-1977 | Oil & Gas Operator | Sep 2025 |
| 18 | Gladiator Operating LLC | Ardmore, OK 73401 | Oil & Gas Operator | Sep 2025 |
| 19 | GLB Exploration Inc | Oklahoma City, OK 73102 | Oil & Gas Operator | Sep 2025 |
| 20 | Global Natural Res Corp | Houston, TX 77210 | Oil & Gas Operator | Dec 1994 |
| 21 | Goggans William C | Pauls Valley, OK 73075-9759 | Oil & Gas Operator | Jun 2004 |
| 22 | Gomaco Inc | Tulsa, OK 74103-5061 | Oil & Gas Operator | Apr 2015 |
| 23 | Good Vaughn Oil Company LLC | Enid, OK 73702-3744 | Oil & Gas Operator | Jun 2019 |
| 24 | Goodrich Larkin M | Konawa, OK 74849-9766 | Oil Operator | Jan 2013 |
| 25 | Gordon Brothers Oil Company | Stroud, OK 74079 | Oil & Gas Operator | Jul 2017 |
| 26 | Gordon Robert Oil Company | Stroud, OK 74070-0366 | Oil & Gas Operator | Jul 2001 |
| 27 | Gosnell Tony Operating LLC | Lindsay, OK 73052 | Oil & Gas Operator | Sep 2025 |
| 28 | Gothic Production Corporation | Oklahoma City, OK 73154 | Oil & Gas Operator | Dec 2016 |
| 29 | Graham Royalty LTD | Covington, LA 70434 | Oil & Gas Operator | Jul 2007 |
| 30 | Grand Production Company | Oklahoma City, OK 73116 | Oil & Gas Operator | Aug 2000 |
| 31 | Grand Resources Inc | Tulsa, OK 74137 | Oil & Gas Operator | Dec 2025 |
| 32 | Gray Operating Company, Inc. | Ardmore, OK 73402 | Oil & Gas Operator | Apr 2018 |
| 33 | Gray, Jimmy W | | Oil & Gas Operator | Aug 1998 |
| 34 | Great Plains Pipeline Company | Tulsa, OK 74135-6405 | Oil & Gas Operator | Jul 2014 |
| 35 | Great Western Equipment Co | Mustang, OK 73064 | Oil & Gas Operator | Aug 2025 |
| 36 | Green'S Drillng & Mud Ser Inc | Konawa, OK 74849 | Oil Operator | Jan 2013 |
| 37 | Greer & Beckham Gas Co Inc | Shamrock, TX 79079-0606 | Oil & Gas Operator | Aug 2013 |
| 38 | Greystone Exploration Co | Oklahoma City, OK 73177 | Oil & Gas Operator | Apr 1996 |
| 39 | Grizzly Operating, LLC | Houston, TX 77057 | Oil & Gas Operator | Aug 2025 |
| 40 | Gugli Corporation | Byng, OK 74820 | Oil & Gas Operator | Sep 2014 |
| 41 | Gulf Exploration, LLC | Oklahoma City, OK 73114 | Oil & Gas Operator | Oct 2025 |
| 42 | Gulf Production Corporation | Oklahoma City, OK 73114 | Oil & Gas Operator | Apr 2015 |
| 43 | Gulfport Energy Corporation | Oklahoma City, OK 73114-5003 | Oil & Gas Operator | Aug 2025 |
| 44 | Gulfport Midcon LLC | Oklahoma City, OK 73114-8132 | Oil & Gas Operator | Sep 2025 |