| 5301 | Hopkins, T. M. Operating Co. | Kilgore, TX 75663 | Oil & Gas Operator | Feb 2026 |
| 5302 | Hopper, Harlan | Midland, TX 79702 | Oil & Gas Operator | Feb 2026 |
| 5303 | Hopper, Thornton | Midland, TX 79702 | Oil & Gas Operator | May 1995 |
| 5304 | Hopper, Thornton Co. | Midland, TX 79702 | Oil & Gas Operator | Feb 2026 |
| 5305 | Hopper-Barnett Inc. | Hobbs, NM 88241 | Oil & Gas Operator | Dec 1993 |
| 5306 | Horadam, Henry L. | Victoria, TX 77905 | Oil & Gas Operator | Oct 2008 |
| 5307 | Horan, Ken L. | Cross Plains, TX 76443 | Gas Operator | May 2002 |
| 5308 | Horansky Burrell Revocable Trust | Wichita Falls, TX 76309 | Oil Operator | Feb 2026 |
| 5309 | Horany, Ray & Ernest | Olney, TX 76374 | Oil & Gas Operator | May 2002 |
| 5310 | Horizon Energy | Vergas, MN 56587 | Oil & Gas Operator | Sep 2025 |
| 5311 | Horizon Exploration Company | Houston, TX 77019 | Oil & Gas Operator | Aug 2002 |
| 5312 | Horizon Exploration Services | El Paso, TX 79922 | Oil Operator | Feb 2026 |
| 5313 | Horizon Natural Gas Company | Tulsa, OK 74170 | Oil & Gas Operator | Oct 2024 |
| 5314 | Horizon Natural Resources, Inc. | Tulsa, OK 74136 | Oil & Gas Operator | Jan 2019 |
| 5315 | Horizon Oil & Gas Co. | Dallas, TX 75221 | Oil & Gas Operator | Jan 2005 |
| 5316 | Horizon Prod. And Operating, LLC | Houston, TX 77019 | Oil & Gas Operator | Feb 2026 |
| 5317 | Horizon Ridge Oil Company | Austin, TX 78738 | Oil Operator | Feb 2026 |
| 5318 | Horizon Well Services, Inc. | Abilene, TX 79604 | Oil & Gas Operator | Feb 2026 |
| 5319 | Horn Energy | Eastland, TX 76448 | Oil & Gas Operator | Feb 2026 |
| 5320 | Horn, Tom D. | Pampa, TX 79066 | Gas Operator | Nov 2013 |
| 5321 | Horn, W. J. | Graham, TX 76450 | Oil & Gas Operator | Oct 2004 |
| 5322 | Horne & Moore Oil Co. | Holliday, TX 76366 | Oil & Gas Operator | Feb 2001 |
| 5323 | Horseshoe Production, LLC | Bryson, TX 76427 | Oil & Gas Operator | Feb 2026 |
| 5324 | Horst Energy LLC | Fort Worth, TX 76124 | Oil & Gas Operator | Jun 2019 |
| 5325 | Hosford Energy Corporation | The Woodlands, TX 77380 | Oil & Gas Operator | Feb 1994 |
| 5326 | Hou-Tex, Inc. | Houston, TX 77224 | Oil & Gas Operator | Jun 2001 |
| 5327 | Houchin, O. E. Inc. | Olney, IL 62450 | Oil & Gas Operator | Feb 1997 |
| 5328 | Houghton Oil & Gas, Inc. | Midland, TX 79701 | Oil & Gas Operator | Mar 2009 |
| 5329 | Houston Energy Operating, L.P. | Houston, TX 77002 | Oil & Gas Operator | Jul 2020 |
| 5330 | Houston Energy, L.P. | Houston, TX 77002 | Oil & Gas Operator | Jan 2014 |
| 5331 | Houston Expl. & Prod. Co., Inc. | Austin, TX 78746 | Oil & Gas Operator | Aug 2003 |
| 5332 | Houston Exploration Company | Houston, TX 77002 | Oil & Gas Operator | Apr 2017 |
| 5333 | Houston Gulf Energy Corporation | The Woodlands, TX 77380 | Oil & Gas Operator | Feb 2026 |
| 5334 | Houston Hydrocarbons, Inc. (A) | Houston, TX 77042 | Oil & Gas Operator | Sep 2004 |
| 5335 | Houston Oil & Gas Company, Inc. | Houston, TX 77063 | Oil & Gas Operator | Aug 1995 |
| 5336 | Houston Oil & Minerals Corp. | Houston, TX 77002 | Oil & Gas Operator | Aug 1996 |
| 5337 | Houston Oil Prod Enterprises,Inc | Houston, TX 77006 | Oil & Gas Operator | Feb 2026 |
| 5338 | Houston Operating, Inc. | Houston, TX 77027 | Oil & Gas Operator | Feb 2026 |
| 5339 | Houston Petroleum Company | Houston, TX 77027 | Oil & Gas Operator | Feb 2026 |
| 5340 | Houston Resources Corp. | Houston, TX 77002 | Oil & Gas Operator | Apr 2003 |
| 5341 | Houtchens, D. D. | Gainesville, TX 76240 | Oil & Gas Operator | Feb 2026 |
| 5342 | Houtchens, DD & Anna D LVNG TRST | Garland, TX 75043 | Oil Operator | Jun 2025 |
| 5343 | Hovgard & Fitzgerald | Abilene, TX 79608 | Oil & Gas Operator | Mar 1996 |
| 5344 | Howard Exploration, Inc. | Houston, TX 77069 | Oil & Gas Operator | Feb 2026 |
| 5345 | Howard Operating Co. | Saint Jo, TX 76265 | Oil & Gas Operator | Feb 2026 |
| 5346 | Howard, Anthony E. F. | Tyler, TX 75701 | Oil & Gas Operator | Jun 2001 |
| 5347 | Howard, Douglas J. | Houston, TX 77070 | Oil & Gas Operator | Mar 2008 |
| 5348 | Howco Energy, Inc. | Whitesboro, TX 76273 | Oil & Gas Operator | Jun 2000 |
| 5349 | Howell & Sandlin, Inc. | Marshall, TX 75671 | Oil & Gas Operator | Jan 2001 |
| 5350 | Howell Crane & Rigging, Inc. | San Antonio, TX 78220 | Oil Operator | Feb 2026 |
| 5351 | Howell Drilling, Inc. | San Antonio, TX 78230 | Oil & Gas Operator | Aug 2003 |
| 5352 | Howell Oil & Gas, Inc. | Marshall, TX 75671 | Oil & Gas Operator | Oct 2019 |
| 5353 | Howell Petroleum Corporation | Houston, TX 77251 | Oil & Gas Operator | Oct 2015 |
| 5354 | Howell, Ray | Breckenridge, TX 76424 | Oil & Gas Operator | May 1998 |
| 5355 | Howell, VIrginia C. Estate Of | Breckenridge, TX 76424 | Gas Operator | Dec 2024 |
| 5356 | Howitzer Operating, LLC | Dallas, TX 75380 | Oil Operator | Feb 2026 |
| 5357 | Howle Operating Account, Inc. | Breckenridge, TX 76424 | Oil & Gas Operator | Dec 1999 |
| 5358 | Howle, A.G. | Breckenridge, TX 76424 | Oil & Gas Operator | Dec 2011 |
| 5359 | HPC Energy LLC | Midland, TX 79703 | Oil & Gas Operator | Aug 2013 |
| 5360 | HPC Operating, Inc. | Dallas, TX 75379 | Oil & Gas Operator | Mar 2008 |
| 5361 | HPPC, Inc. | Midland, TX 79701 | Oil & Gas Operator | Sep 2025 |
| 5362 | HR Petroleum | Corpus Chrsti, TX 78413 | Oil & Gas Operator | Apr 1998 |
| 5363 | HRB Oil | Houston, TX 77042 | Oil & Gas Operator | Oct 1998 |
| 5364 | HRB Operating Company, Inc. | Bridgeport, TX 76426 | Oil & Gas Operator | Feb 2026 |
| 5365 | Hrbacek Oil Corp. | La Grange, TX 78945 | Oil & Gas Operator | Feb 2004 |
| 5366 | HRF Exploration & Production LLC | Gaylord, MI 49734-0160 | Gas Operator | Feb 2026 |
| 5367 | HRF Exploration & Production,Inc | Denver, CO 80237 | Oil & Gas Operator | Mar 2009 |
| 5368 | HRH Energy Group Incorporated | Carrollton, TX 75006 | Oil & Gas Operator | Nov 2009 |
| 5369 | Hronek, Kenneth | Caldwell, TX 77836 | Oil & Gas Operator | Feb 2026 |
| 5370 | Hrubetz Oil Co. | Dallas, TX 75225 | Oil Operator | Sep 1986 |
| 5371 | Hrubetz Operating Company | Dallas, TX 75225 | Oil & Gas Operator | Feb 1999 |
| 5372 | HS Resources, Inc. | Denver, CO 80202 | Oil & Gas Operator | Sep 2002 |
| 5373 | HTR Operating Co., Inc. | Hurst, TX 76053 | Oil & Gas Operator | Feb 2026 |
| 5374 | Hub-Cap Oil Company | Arlington, TX 76016 | Oil & Gas Operator | Dec 2013 |
| 5375 | Hubbard Operating | Ozona, TX 76943 | Gas Operator | Feb 2026 |
| 5376 | Hubcap Oil, LLC | Boerne, TX 78015 | Oil Operator | Feb 2026 |
| 5377 | Hubco Exploration Inc. | Houston, TX 77073 | Oil & Gas Operator | Sep 2002 |
| 5378 | Huber Energy L.P. | Houston, TX 77079 | Oil & Gas Operator | Feb 2007 |
| 5379 | Huber Energy Panhandle LP | Houston, TX 77079 | Oil & Gas Operator | Oct 2005 |
| 5380 | Huber J M Corp | Edison, NJ 08837 | Oil & Gas Operator | Feb 2026 |
| 5381 | Huddleston Oil And Gas Company | Millsap, TX 76066 | Gas Operator | Dec 2002 |
| 5382 | Hudgens Operating Co., Inc. | Abilene, TX 79603 | Oil & Gas Operator | Jul 1995 |
| 5383 | Hudson Brothers Mining Co., Inc. | Cisco, TX 76437 | Oil & Gas Operator | Jun 1994 |
| 5384 | Hudson, Comer Oil & Gas | Cisco, TX 76437 | Oil & Gas Operator | Jan 2003 |
| 5385 | Huff Minerals, LTD. | Amarillo, TX 79101 | Gas Operator | Feb 2026 |
| 5386 | Huff, Jack | Midland, TX 79710 | Oil & Gas Operator | Dec 2004 |
| 5387 | Huffman, H. L., LTD. | Fort Worth, TX 76113 | Oil & Gas Operator | Sep 1994 |
| 5388 | Hufo Production Corporation | Midland, TX 79702 | Oil & Gas Operator | Jul 2002 |
| 5389 | Huggs Inc. | Shreveport, LA 71101 | Oil & Gas Operator | Apr 2003 |
| 5390 | Hughes & Patterson Oper. Corp. | Albany, TX 76430 | Oil & Gas Operator | Feb 2026 |
| 5391 | Hughes & Shawver | Olney, TX 76374 | Oil & Gas Operator | Aug 1996 |
| 5392 | Hughes Legacy LLC | Houston, TX 77002 | Oil & Gas Operator | Jul 2022 |
| 5393 | Hughes Oil Company Inc | Odessa, TX 79765 | Oil & Gas Operator | Feb 2004 |
| 5394 | Hughes Supplies, Inc. | Greenwood, LA 71033 | Oil & Gas Operator | Jul 2019 |
| 5395 | Hughes, Bill Drilling, Inc. | Graham, TX 76450 | Oil & Gas Operator | Feb 2026 |
| 5396 | Hughes, Bob Oil Company | San Angelo, TX 76901 | Oil & Gas Operator | Jul 2011 |
| 5397 | Hughes, Dan A. Company | Beeville, TX 78104 | Oil & Gas Operator | May 2006 |
| 5398 | Hughes, Dan A. Company, L.P. | Beeville, TX 78104 | Oil & Gas Operator | Feb 2026 |
| 5399 | Hughey, Gaylord T. SR. Oper. Co. | Tyler, TX 75711 | Oil & Gas Operator | Feb 1998 |
| 5400 | Hughey, W. R., Operating Co. | Tyler, TX 75711 | Oil & Gas Operator | Feb 2005 |