| 1 | G & F Oil, Inc. | Aledo, TX 76008 | Oil & Gas Operator | Dec 2025 |
| 2 | Gardner Production, LLC | Decatur, TX 76234 | Oil & Gas Operator | Jul 2023 |
| 3 | GBG Operating Corp. | Wichita Falls, TX 76302 | Oil & Gas Operator | Sep 1998 |
| 4 | General Atlantic Resources Inc | Denver, CO 80202 | Oil & Gas Operator | Jan 2022 |
| 5 | General Operating Company | Wichita Falls, TX 76307 | Oil & Gas Operator | Dec 2025 |
| 6 | Georgetown Operating Company | Oklahoma City, OK 73113 | Oil & Gas Operator | Jun 2019 |
| 7 | Giant Energy Corp. | Dallas, TX 75230 | Oil & Gas Operator | Jul 2019 |
| 8 | Giant NRG Co., LP | Dallas, TX 75230 | Oil & Gas Operator | Dec 2025 |
| 9 | Gilmore, Leo Oil, Inc. | Holliday, TX 76366 | Oil & Gas Operator | Dec 2025 |
| 10 | Glen D. Gonzenbach, LLC | Henrietta, TX 76365 | Oil & Gas Operator | Dec 2016 |
| 11 | Global Natural Resources Corp. | Houston, TX 77002 | Oil & Gas Operator | May 1998 |
| 12 | Go Oil Corp. | Jacksboro, TX 76458 | Oil & Gas Operator | Dec 2025 |
| 13 | Gonzenbach Oil & Gas, LLC | Henrietta, TX 76365 | Oil & Gas Operator | May 2020 |
| 14 | Gonzenbach, Glen D | Henrietta, TX 76365 | Oil & Gas Operator | Aug 2007 |
| 15 | Goodrich Petroleum Company | Houston, TX 77002 | Oil & Gas Operator | Feb 2022 |
| 16 | Grace Petroleum Corp. | Tulsa, OK 74103 | Oil & Gas Operator | Oct 1997 |
| 17 | Grace, Jack Production Co, LLC | Wichita Falls, TX 76310 | Oil & Gas Operator | Dec 2025 |
| 18 | Grace, Jack, Prod. Co. | Wichita Falls, TX 76302 | Oil & Gas Operator | Mar 1997 |
| 19 | Grace, Pete | Jacksboro, TX 76458 | Oil & Gas Operator | Mar 1996 |
| 20 | Graham Energy LTD | Houston, TX 77024 | Oil & Gas Operator | Mar 1994 |
| 21 | Graham Royalty LTD | Covington, LA 70434 | Oil & Gas Operator | Jul 2007 |
| 22 | Grayrock Corp., The | Dallas, TX 75243 | Oil & Gas Operator | Dec 1999 |
| 23 | Great American Resources Inc. | Bowie, TX 76230 | Oil & Gas Operator | Dec 2025 |
| 24 | Great West Energy & Expl., Inc. | Addison, TX 75001 | Oil & Gas Operator | Mar 2008 |
| 25 | Great West Operating Co., Inc. | Dallas, TX 75240 | Oil & Gas Operator | Aug 2003 |
| 26 | Greco Operating, Inc. | Graham, TX 76450 | Oil & Gas Operator | Dec 2025 |
| 27 | GRS Oil & Gas Company | Irving, TX 75017 | Oil & Gas Operator | Aug 1994 |
| 28 | Gruy Petroleum Management Co. | Irving, TX 75014 | Oil & Gas Operator | Nov 2014 |