| 1 | H & S Production, Inc. | Dallas, TX 75252 | Oil & Gas Operator | Mar 2004 |
| 2 | Hacker Brothers Oil Company, Inc | Muenster, TX 76252 | Oil & Gas Operator | May 2004 |
| 3 | Hacker Brothers Well Service,Inc | Muenster, TX 76252 | Oil & Gas Operator | Dec 2024 |
| 4 | Hadley Oil | Nocona, TX 76255 | Oil Operator | Jan 2014 |
| 5 | Hadley Oil Company, LLC | Nocona, TX 76255 | Oil Operator | Dec 2024 |
| 6 | Hale Oil & Gas Properties | Graham, TX 76450 | Oil & Gas Operator | Jul 1997 |
| 7 | Hall Energy Company LLC | Oklahoma City, OK 73120-5020 | Oil & Gas Operator | Jul 2022 |
| 8 | Hane Operating, Inc. | Santa Anna, TX 76878 | Oil & Gas Operator | Sep 2005 |
| 9 | Hanks, Christopher Glenn | Gainesville, TX 76240 | Oil & Gas Operator | Dec 2024 |
| 10 | Harper, Wayne | Dallas, TX 75206 | Oil & Gas Operator | Mar 2008 |
| 11 | Harrell Operating Inc | Graham, TX 76450 | Oil & Gas Operator | Sep 2005 |
| 12 | Harrell, Charles | Graham, TX 76450 | Oil & Gas Operator | Dec 2000 |
| 13 | Harvest Petroleum Inc. | Frisco, TX 75033 | Oil & Gas Operator | Dec 2024 |
| 14 | Henley Operating | Nocona, TX 76255 | Oil & Gas Operator | Dec 2024 |
| 15 | Hep Oil Company LTD | Gainesville, TX 76240 | Oil & Gas Operator | Mar 2012 |
| 16 | Hep Oil GP, LLC | Gainesville, TX 76241 | Oil & Gas Operator | Mar 2015 |
| 17 | Hess, Jerry Operating Co. | Muenster, TX 76252 | Oil & Gas Operator | Dec 2024 |
| 18 | Heydrick Petroleum Company | Wichita Falls, TX 76308 | Oil & Gas Operator | Dec 2024 |
| 19 | Hill, Hub, Inc. | San Antonio, TX 78209 | Oil & Gas Operator | Jan 1994 |
| 20 | Holli-Tex Supply Co. | Holliday, TX 76366 | Oil & Gas Operator | May 2018 |
| 21 | Hood, J. Frank, Jr. | Arlington, TX 76006 | Oil & Gas Operator | Dec 2024 |
| 22 | Houtchens, D. D. | Gainesville, TX 76240 | Oil & Gas Operator | Dec 2024 |
| 23 | Houtchens, DD & Anna D LVNG TRST | Garland, TX 75043 | Oil Operator | Dec 2024 |
| 24 | Howard Operating Co. | Nocona, TX 76255 | Oil & Gas Operator | Dec 2024 |
| 25 | HRB Operating Company Inc | Bridgeport, TX 76426 | Oil & Gas Operator | Dec 2024 |
| 26 | Hunt Oil Company | Dallas, TX 75201 | Oil & Gas Operator | Dec 2024 |
| 27 | Husfeld, Rose Marie | Bowie, TX 76230 | Oil & Gas Operator | Aug 2017 |
| 28 | Husfeld, Walter H. | Bowie, TX 76230 | Oil & Gas Operator | Jun 2007 |
| 29 | HW Operating, LLC | Wichita Falls, TX 76308 | Oil & Gas Operator | Dec 2024 |