| 1 | G & N Oil & Gas LLC | Asher, OK 74826 | Oil & Gas Operator | Mar 2025 |
| 2 | G & S Production Company | Velma, OK 73491-0036 | Oil & Gas Operator | Oct 2021 |
| 3 | G E Operating, Inc. | Graham, TX 76450 | Oil & Gas Operator | May 2020 |
| 4 | G M C Oil & Gas LTD | Oklahoma City, OK 73102-8804 | Oil & Gas Operator | Sep 1999 |
| 5 | G2GH Operating LLC | Edmond, OK 73003-3207 | Oil Operator | Dec 2025 |
| 6 | Gala Resources, LTD. | Graham, TX 76450 | Oil & Gas Operator | Nov 2025 |
| 7 | Garfield Operations | San Diego, CA 92101 | Oil & Gas Operator | Oct 1990 |
| 8 | Gaskins Glendell L | Slick, OK 74071 | Oil & Gas Operator | Dec 2025 |
| 9 | Gaskins Ronnie Oil Production | Lawton, OK 73501-4529 | Oil Operator | Jun 2014 |
| 10 | Gate Oil And Gas LTD | Duncan, OK 73533 | Oil Operator | Jan 2004 |
| 11 | Gay Drilling Contractors | Duncan, OK 73534-0457 | Oil & Gas Operator | Dec 2014 |
| 12 | Gaylan Hunt Enterprises Inc | Duncan, OK 73533 | Oil & Gas Operator | Nov 2025 |
| 13 | Ge Oil & Gas LLC | Hastings, OK 73548-4904 | Oil & Gas Operator | Nov 2025 |
| 14 | Geo Engineering, Inc. | Houston, TX 77027 | Oil & Gas Operator | Jun 2009 |
| 15 | Geodyne Resources Inc | Tulsa, OK 74103 | Oil & Gas Operator | Jul 2010 |
| 16 | George Taylor & Sons Oil LLC | Ringling, OK 73456 | Oil Operator | Nov 2025 |
| 17 | Getty Oil Company | Hays, KS 67601 | Oil & Gas Operator | Mar 2015 |
| 18 | Gilby Services LLC | Velma, OK 73491 | Oil & Gas Operator | Nov 2025 |
| 19 | Glacier Petroleum Co Okla Inc | Edmond, OK 73013-1977 | Oil & Gas Operator | Dec 2025 |
| 20 | Gladiator Operating LLC | Ardmore, OK 73401 | Oil & Gas Operator | Dec 2025 |
| 21 | GLB Exploration Inc | Oklahoma City, OK 73102 | Oil & Gas Operator | Dec 2025 |
| 22 | Golden Gas Energies Inc | | Oil & Gas Operator | Jan 1999 |
| 23 | Gosnell Tony Operating LLC | Lindsay, OK 73052 | Oil & Gas Operator | Nov 2025 |
| 24 | Gothic Production Corporation | Oklahoma City, OK 73154 | Oil & Gas Operator | Dec 2016 |
| 25 | Gouin Frank L | Oklahoma City, OK 73139-2513 | Oil Operator | Jan 2014 |
| 26 | Graham Royalty LTD | Covington, LA 70434 | Oil & Gas Operator | Jul 2007 |
| 27 | Gravley Bill | Duncan, OK 73533 | Oil Operator | Nov 1998 |
| 28 | Gray Pipeline Inc | Broomfield, CO 80023-8304 | Oil & Gas Operator | Jul 2018 |
| 29 | Gray, Jimmy W | | Oil & Gas Operator | Aug 1998 |
| 30 | Great Plains Pipeline Company | Tulsa, OK 74135-6405 | Oil & Gas Operator | Jul 2014 |
| 31 | Gribble Jr R W | Dallas, TX 75235 | Oil & Gas Operator | Apr 2014 |
| 32 | Griffin Resources LLC | Breckenridge, TX 76424 | Oil & Gas Operator | Feb 2026 |
| 33 | Grizzly Operating, LLC | Houston, TX 77057 | Oil & Gas Operator | Nov 2025 |
| 34 | Ground Development Company Inc | Dallas, TX 75229-0377 | Oil & Gas Operator | Jan 2013 |
| 35 | Gulf Exploration, LLC | Oklahoma City, OK 73114 | Oil & Gas Operator | Jan 2026 |
| 36 | Gulf Production Corporation | Oklahoma City, OK 73114 | Oil & Gas Operator | Apr 2015 |
| 37 | Gulfport Energy Corporation | Oklahoma City, OK 73114-5003 | Oil & Gas Operator | Aug 2025 |
| 38 | Gulfport Midcon LLC | Oklahoma City, OK 73114-8132 | Oil & Gas Operator | Dec 2025 |
| 39 | Gulfstream Petroleum Corp | | Oil & Gas Operator | Feb 2002 |