| 1 | H & S Production, Inc. | Dallas, TX 75252 | Oil & Gas Operator | Mar 2004 |
| 2 | H P S Investments | Graham, TX 76450 | Oil & Gas Operator | Mar 2008 |
| 3 | Hacker Brothers Oil Company, Inc | Muenster, TX 76252 | Oil & Gas Operator | May 2004 |
| 4 | Haigood & Campbell | Archer City, TX 76351 | Oil & Gas Operator | Dec 2024 |
| 5 | Halek Energy L.L.C. | Dallas, TX 75201 | Oil & Gas Operator | Jan 2014 |
| 6 | Hamilton, W. B., Estate | Wichita Falls, TX 76301 | Oil & Gas Operator | Mar 2004 |
| 7 | Hamilton-Tedford Oper. Co., LLC | Wichita Falls, TX 76301 | Oil Operator | May 2007 |
| 8 | Hamman, Blake | Graham, TX 76450 | Oil & Gas Operator | Jul 2020 |
| 9 | Hammon Properties | Wichita Falls, TX 76307 | Oil & Gas Operator | Apr 1996 |
| 10 | Hane Operating, Inc. | Santa Anna, TX 76878 | Oil & Gas Operator | Sep 2005 |
| 11 | Hanks, Christopher Glenn | Gainesville, TX 76240 | Oil & Gas Operator | Dec 2024 |
| 12 | Harbor Resources LLC | Oklahoma City, OK 73120 | Oil & Gas Operator | Dec 2024 |
| 13 | Hardrock Operating Company, Inc. | Fort Worth, TX 76161 | Oil & Gas Operator | Dec 2024 |
| 14 | Harrell Operating Inc | Graham, TX 76450 | Oil & Gas Operator | Sep 2005 |
| 15 | Harrell Operating, L.L.C. | Graham, TX 76450 | Oil & Gas Operator | Jun 2008 |
| 16 | Harrell, Charles | Graham, TX 76450 | Oil & Gas Operator | Dec 2000 |
| 17 | Harvest Petroleum Inc. | Frisco, TX 75033 | Oil & Gas Operator | Dec 2024 |
| 18 | Hatler Oil Company, Inc. | Graham, TX 76450 | Oil & Gas Operator | Sep 2000 |
| 19 | Hawkins, G. A. | Graham, TX 76450 | Oil & Gas Operator | Dec 2013 |
| 20 | Hays & Boydston | Graham, TX 76450 | Oil & Gas Operator | Mar 1994 |
| 21 | Hays, John H. | Graham, TX 76450 | Oil & Gas Operator | Dec 2024 |
| 22 | Headline Resources, Inc. | Richardson, TX 75080 | Oil & Gas Operator | Aug 1997 |
| 23 | Hep Oil Company LTD | Gainesville, TX 76240 | Oil & Gas Operator | Mar 2012 |
| 24 | Hep Oil GP, LLC | Gainesville, TX 76241 | Oil & Gas Operator | Mar 2015 |
| 25 | Herod, Bill | Ranger, TX 76470 | Oil & Gas Operator | Apr 2022 |
| 26 | Herring, Ray | Graham, TX 76450 | Oil & Gas Operator | Jul 2014 |
| 27 | Hess, Jerry Operating Co. | Muenster, TX 76252 | Oil & Gas Operator | Dec 2024 |
| 28 | Hexagon Oil And Gas Inc. | Fort Worth, TX 76132 | Oil & Gas Operator | Dec 2024 |
| 29 | Hill, Hub, Inc. | San Antonio, TX 78209 | Oil & Gas Operator | Jan 1994 |
| 30 | Hilltop Petroleum LLC | Weatherford, TX 76086 | Oil & Gas Operator | Dec 2024 |
| 31 | Holli-Tex Supply Co. | Holliday, TX 76366 | Oil & Gas Operator | May 2018 |
| 32 | Holliday CSG Corp. | Holliday, TX 76366 | Oil & Gas Operator | Dec 2024 |
| 33 | Horn, W. J. | Graham, TX 76450 | Oil & Gas Operator | Oct 2004 |
| 34 | Horseshoe Production, LLC | Bryson, TX 76427 | Oil Operator | Dec 2024 |
| 35 | Houtchens, D. D. | Gainesville, TX 76240 | Oil & Gas Operator | Dec 2024 |
| 36 | Howell Petroleum Corporation | Houston, TX 77251 | Oil & Gas Operator | Oct 2015 |
| 37 | HRB Operating Company Inc | Bridgeport, TX 76426 | Oil & Gas Operator | Dec 2024 |
| 38 | Hulsey Larry O & Co | Graham, TX 76046 | Oil & Gas Operator | Jun 2012 |
| 39 | Hunt Oil Company | Dallas, TX 75201 | Oil & Gas Operator | Dec 2024 |
| 40 | Hunt Operating, LLC | Jacksboro, TX 76458 | Oil & Gas Operator | Dec 2024 |
| 41 | Hunter Energy, Inc. | Hurst, TX 76053 | Oil & Gas Operator | Dec 2024 |
| 42 | HW Operating, LLC | Wichita Falls, TX 76308 | Oil & Gas Operator | Dec 2024 |