| 13401 | Hollrah Exploration Company | Edmond, OK 73012 | Oil & Gas Operator | Jun 2025 |
| 13402 | Hollub Production Company | Seguin, TX 78156 | Oil & Gas Operator | Jul 2000 |
| 13403 | Hollub, Lambert Drilling Company | Seguin, TX 78155 | Oil & Gas Operator | Sep 2025 |
| 13404 | Holly Energy Inc | | Oil Operator | Apr 1983 |
| 13405 | Holly Petroleum, Inc. | Midland, TX 79702 | Oil & Gas Operator | Nov 2008 |
| 13406 | Holmac Oil Company | Hobbs, NM 88240 | Oil & Gas Operator | May 1996 |
| 13407 | Holman Kendall | Paden, OK 74860-7116 | Oil & Gas Operator | Jun 2025 |
| 13408 | Holman Ray | Okemah, OK 74859-0029 | Gas Operator | May 2024 |
| 13409 | Holman Robert W | Prague, OK 74864-9230 | Oil & Gas Operator | Jan 2019 |
| 13410 | Holmes Exploration, LLC | Tulsa, OK 74136 | Oil & Gas Operator | Jun 2015 |
| 13411 | Holmes Mary Ellen | Bristow, OK 74010 | Oil Operator | Mar 2015 |
| 13412 | Holmes Western Oil Corporation | | Oil & Gas Operator | Jun 2025 |
| 13413 | Holson Well Service | Albany, TX 76430 | Oil & Gas Operator | Sep 2025 |
| 13414 | Holston-GR. Sou. Oil & Gas Co. | | Oil & Gas Operator | Mar 1981 |
| 13415 | Holt Andrew L "Mickey" | Pawhuska, OK 74056 | Oil & Gas Operator | Aug 2008 |
| 13416 | Holt Brothers | Gruver, TX 79040 | Gas Operator | Sep 2025 |
| 13417 | Holt IVan | | Oil Operator | Mar 1989 |
| 13418 | Holt IVan Leroy | | Oil & Gas Operator | Jan 1994 |
| 13419 | Holt James | Skiatook, OK 74070-0006 | Oil & Gas Operator | Feb 2020 |
| 13420 | Holt Jean | Claremore, OK 74017-9439 | Oil Operator | Mar 2015 |
| 13421 | Holt Oil & Gas C | | Oil Operator | Sep 1984 |
| 13422 | Holt Oil & Gas Corp | Dallas, TX 75231 | Oil & Gas Operator | Apr 1995 |
| 13423 | Holt Oil And Cattle LLC | Bedias, TX 77831 | Oil & Gas Operator | Sep 2025 |
| 13424 | Holt, Carol | Independence, KS 67301 | Oil Operator | Feb 2025 |
| 13425 | Holt, Roger | Cherryvale, KS 67335 | Gas Operator | Mar 2003 |
| 13426 | Holtom, Bill, A General Partnership | Saint Paul, KS 66771 | Oil Operator | Jun 2024 |
| 13427 | Holton Brothers | Canton, KS 67428 | Oil Operator | Apr 1990 |
| 13428 | Holwell Drilling Company | | Oil Operator | Sep 1992 |
| 13429 | Hombre Oil Co., LTD. | Tyler, TX 75713 | Oil & Gas Operator | Apr 2021 |
| 13430 | Home Gas & Oil Co Inc | Indiana, PA 15701-1532 | Oil & Gas Operator | Dec 2024 |
| 13431 | Home Petroleum Corp | Victoria, TX 77902 | Oil & Gas Operator | Sep 2025 |
| 13432 | Home-Stake Oil & Gas Company | Plano, TX 75093 | Oil & Gas Operator | Jul 2025 |
| 13433 | Home-Stake Royalty Corp., The | Tulsa, OK 74103 | Oil & Gas Operator | Feb 2014 |
| 13434 | Homeland Energy GP | Campbellsville, KY 42719 | Oil & Gas Operator | Dec 2021 |
| 13435 | Homeland Energy Ventures LLC | Pittsburgh, PA 15241-1633 | Oil & Gas Operator | Dec 2008 |
| 13436 | Homeland Gas & Oil, Inc | Roosevelt, UT 84066-1574 | Oil & Gas Operator | Jun 2025 |
| 13437 | Homeplace Oil And Gas | Caldwell, TX 77836 | Oil & Gas Operator | Feb 2021 |
| 13438 | Homer D. Oliver | | Gas Operator | Sep 1998 |
| 13439 | Homer E. Hines, Inc. | | Oil Operator | Sep 1978 |
| 13440 | Homer Oil Co LLC | Holdenville, OK 74848-3232 | Oil Operator | Jun 2025 |
| 13441 | Homestead Oil Inc | | Oil & Gas Operator | Jan 2018 |
| 13442 | Hominy Consulting, LLC | Canadian, TX 79014 | Oil & Gas Operator | Sep 2025 |
| 13443 | Hon R J Oil & Ga | | Oil Operator | Nov 1990 |
| 13444 | Hondo Drilling Company | Midland, TX 79702 | Oil & Gas Operator | Nov 1996 |
| 13445 | Hondo Oil & Gas | Houston, TX 77042 | Oil & Gas Operator | Oct 1995 |
| 13446 | Hondo Oil & Gas Company | Roswell, NM 88202 | Oil & Gas Operator | Aug 2006 |
| 13447 | Hondo Operating, Inc. | | Oil & Gas Operator | Aug 1997 |
| 13448 | Honeck Oil Company | Austin, TX 78716 | Oil & Gas Operator | Mar 2008 |
| 13449 | Honeck Oil Company, LP | Austin, TX 78716 | Oil & Gas Operator | Dec 2010 |
| 13450 | Honey Oil Co | Wichita, KS 67226 | Oil & Gas Operator | Mar 2009 |
| 13451 | Honey Well, LLC | Lenexa, KS 66219 | Oil Operator | May 2025 |
| 13452 | Honeymon Drilling Company LTD | Oklahoma City, OK 73147 | Oil & Gas Operator | Feb 1995 |
| 13453 | Hood, J. F. | Holliday, TX 76366 | Oil & Gas Operator | Apr 2010 |
| 13454 | Hood, J. Frank, Jr. | Arlington, TX 76006 | Oil & Gas Operator | Sep 2025 |
| 13455 | Hood, Joe B. | Wichita Falls, TX 76301 | Oil & Gas Operator | Mar 2008 |
| 13456 | Hooker Phil Oil Operator | | Oil Operator | Aug 1996 |
| 13457 | Hooks & Hooks | Abilene, TX 79608 | Oil & Gas Operator | Feb 1999 |
| 13458 | Hooks Dwain | Tatums, OK 73487 | Oil & Gas Operator | Jun 2025 |
| 13459 | Hooper & Sons Investments Co.Inc | Tenaha, TX 75974 | Gas Operator | Nov 1997 |
| 13460 | Hooper, DR. Oil & Royalty Co. | Conroe, TX 77304 | Oil & Gas Operator | Sep 1999 |
| 13461 | Hootkins, Seymour G. | Archer City, TX 76351 | Oil & Gas Operator | Apr 1997 |
| 13462 | Hootkins-Smith,La LTD. | | Gas Operator | Jun 1985 |
| 13463 | Hoots Jr, Willard | Martinsville, IN 46151 | Oil Operator | Dec 2023 |
| 13464 | Hoover & Wilson Exp & Prod Inc | Fort Smith, AR 72913-5171 | Gas Operator | Jul 2013 |
| 13465 | Hoover Frank W Dba Cherokee Drilling | Miramar Beach, FL 32550 | Oil & Gas Operator | Dec 2024 |
| 13466 | Hoover Gregory M | Wattsburg, PA 16442-2209 | Gas Operator | Dec 2024 |
| 13467 | Hoover Noble C | | Oil Operator | Nov 1992 |
| 13468 | Hoover Petroleum Company, LLC | Midland, TX 79701 | Oil Operator | Sep 2025 |
| 13469 | Hoover Producing & Operating | Newark, OH 43055 | Oil & Gas Operator | Dec 2001 |
| 13470 | Hopco Operating, Inc. | Stafford, TX 77497 | Oil & Gas Operator | Dec 2016 |
| 13471 | Hopco Resources Inc | Columbus, OH 43065 | Oil & Gas Operator | Dec 2024 |
| 13472 | Hope Company, LLC | Longmont, CO 80502 | Gas Operator | Feb 2012 |
| 13473 | Hope Energy, L.L.C. | Snyder, TX 79549 | Oil & Gas Operator | Sep 2025 |
| 13474 | Hope Gas, Inc. | Richmond, VA 23261 | Oil & Gas Operator | Dec 2010 |
| 13475 | Hope Oil Corporation | | Oil Operator | Jun 2025 |
| 13476 | Hope Oil Inc | Midland, TX 79702 | Oil & Gas Operator | Oct 2021 |
| 13477 | Hope Production, Inc. | Edinburg, TX 78540 | Oil & Gas Operator | Jan 2000 |
| 13478 | Hope'S Windows, Inc. | Jamestown, NY 14702 | Gas Operator | Dec 2024 |
| 13479 | Hopewell Oil & Gas Development Company | Columbus, OH 43228 | Oil & Gas Operator | Dec 2019 |
| 13480 | Hopewell Operating, Inc. | Shreveport, LA 71101 | Oil & Gas Operator | Sep 2025 |
| 13481 | Hopkins Engineering, Inc. | Houston, TX 77046 | Oil & Gas Operator | Sep 1996 |
| 13482 | Hopkins, T. M. Operating Co. | Kilgore, TX 75663 | Oil & Gas Operator | Sep 2025 |
| 13483 | Hoppe Oil & Gas | | Oil Operator | Nov 1992 |
| 13484 | Hoppe Oil & Gas Co., Inc. | Wichita, KS 67202 | Oil Operator | Jul 1998 |
| 13485 | Hopper Oil Co., Inc. | Winfield, KS 67156 | Oil Operator | May 2025 |
| 13486 | Hopper Oil Compa | | Oil Operator | Sep 1988 |
| 13487 | Hopper, Harlan | Midland, TX 79702 | Oil & Gas Operator | Sep 2025 |
| 13488 | Hopper, Thornton Co. | Midland, TX 79702 | Oil & Gas Operator | Sep 2025 |
| 13489 | Hoppes Helen E | Depew, OK 74028-3428 | Oil & Gas Operator | Apr 2015 |
| 13490 | Horadam, Henry L. | Victoria, TX 77905 | Oil & Gas Operator | Oct 2008 |
| 13491 | Horan, Ken L. | Cross Plains, TX 76443 | Gas Operator | May 2002 |
| 13492 | Horansky Burrell Revocable Trust | Wichita Falls, TX 76309 | Oil Operator | Sep 2025 |
| 13493 | Horany, Ray & Ernest | Olney, TX 76374 | Oil & Gas Operator | May 2002 |
| 13494 | Horizon Barnsdall Energy Part LTD I Osage Only | | Oil Operator | Feb 2012 |
| 13495 | Horizon Energy | Vergas, MN 56587 | Oil & Gas Operator | Sep 2025 |
| 13496 | Horizon Energy Corporation | Sand Fork, WV 26430 | Oil & Gas Operator | Dec 2021 |
| 13497 | Horizon Expl. & Dev. Co., Inc. | | Oil & Gas Operator | Jun 1995 |
| 13498 | Horizon Exploration Company | Houston, TX 77019 | Oil & Gas Operator | Aug 2002 |
| 13499 | Horizon Exploration Services | El Paso, TX 79922 | Oil Operator | Sep 2025 |
| 13500 | Horizon Natural Gas Company | Tulsa, OK 74170 | Oil & Gas Operator | Oct 2024 |