| 13501 | Hosco Operating Inc | Seminole, OK 74868-2447 | Oil & Gas Operator | Aug 2017 |
| 13502 | Hoselton, Earlie And Caroline | Ravenswood, WV 26164-8753 | Gas Operator | Dec 2021 |
| 13503 | Hosford Energy Corporation | The Woodlands, TX 77380 | Oil & Gas Operator | Feb 1994 |
| 13504 | Hosston Oil Inc. | | Oil Operator | Dec 1993 |
| 13505 | Hot Rod Oil | Vernal, UT 84078 | Oil & Gas Operator | Jun 2025 |
| 13506 | Hot Springs Resources LTD | Casper, WY 82601 | Oil Operator | Dec 2014 |
| 13507 | Hottel Glenn D | W Salem, OH 44287 | Oil & Gas Operator | Dec 1993 |
| 13508 | Hottel Oil & Gas LLC | Wooster, OH 44691-7639 | Oil & Gas Operator | Dec 2013 |
| 13509 | Hotulke Construction LLC | Seminole, OK 74868 | Oil & Gas Operator | Jul 2025 |
| 13510 | Hou-Tex Oil And Gas | | Oil & Gas Operator | Jul 1982 |
| 13511 | Hou-Tex, Inc. | Houston, TX 77224 | Oil & Gas Operator | Jun 2001 |
| 13512 | Houchin, O. E. Inc. | Olney, IL 62450 | Oil & Gas Operator | Feb 1997 |
| 13513 | Hough Oil And Gas | Hominy, OK 74035 | Oil Operator | Jul 2025 |
| 13514 | Houghton Investments LLC | Columbus, OH 43235 | Oil & Gas Operator | Dec 2024 |
| 13515 | Houghton Oil & Gas, Inc. | Midland, TX 79701 | Oil & Gas Operator | Mar 2009 |
| 13516 | Houma Operating Company, Inc. | | Oil & Gas Operator | Jun 1998 |
| 13517 | Houma Salt Water Disposal Corp | | Oil Operator | Dec 2020 |
| 13518 | Hound Resources LLC | | Oil & Gas Operator | Sep 2025 |
| 13519 | Hounds Oil & Gas LLC | Carbon Hill, OH 43111 | Oil & Gas Operator | Dec 2024 |
| 13520 | House Thomas J | | Oil Operator | May 2025 |
| 13521 | House, Dustin | Shawnee, KS 66218 | Oil Operator | May 2025 |
| 13522 | Houseco Petroleum Inc | Bristow, OK 74010-0842 | Oil & Gas Operator | Aug 2002 |
| 13523 | Householder Oil Co | Junction City, OH 43748 | Oil & Gas Operator | Dec 1988 |
| 13524 | Houseknecht Oil Producers Inc | | Oil & Gas Operator | Dec 1994 |
| 13525 | Housel John R Jr | | Oil Operator | Oct 1994 |
| 13526 | Housel, Robert E. | Cherryvale, KS 67335 | Oil & Gas Operator | Dec 2003 |
| 13527 | Houser, R. G. | | Oil Operator | Mar 1953 |
| 13528 | Houston Energy & Dev. Inc. | | Oil & Gas Operator | Apr 1994 |
| 13529 | Houston Energy Operating, L.P. | Houston, TX 77002 | Oil & Gas Operator | Jul 2020 |
| 13530 | Houston Energy, L.P. | Houston, TX 77002 | Oil & Gas Operator | Jan 2014 |
| 13531 | Houston Expl. & Prod. Co., Inc. | Austin, TX 78746 | Oil & Gas Operator | Aug 2003 |
| 13532 | Houston Exploration Co, The | Houston, TX 77002 | Oil & Gas Operator | Apr 2017 |
| 13533 | Houston Gulf Energy Corporation | The Woodlands, TX 77380 | Oil & Gas Operator | Nov 2025 |
| 13534 | Houston Hydrocarbons, Inc. (A) | Houston, TX 77042 | Oil & Gas Operator | Sep 2004 |
| 13535 | Houston Hydrolan | | Oil Operator | Jul 1984 |
| 13536 | Houston Oil & Gas Company, Inc. | Houston, TX 77063 | Oil & Gas Operator | Aug 1995 |
| 13537 | Houston Oil & Minerals Corp. | Houston, TX 77002 | Oil & Gas Operator | Aug 1996 |
| 13538 | Houston Oil And Minerals | | Oil & Gas Operator | Oct 1993 |
| 13539 | Houston Oil Fields Company | | Oil & Gas Operator | Apr 1987 |
| 13540 | Houston Oil Prod Enterprises,Inc | Houston, TX 77006 | Oil & Gas Operator | Nov 2025 |
| 13541 | Houston Operating, Inc. | Houston, TX 77027 | Oil & Gas Operator | Nov 2025 |
| 13542 | Houston Petroleum Company | Houston, TX 77027 | Oil & Gas Operator | Nov 2025 |
| 13543 | Houston Production Corporation | | Oil & Gas Operator | Jan 2004 |
| 13544 | Houston Resources Corp. | Houston, TX 77002 | Oil & Gas Operator | Apr 2003 |
| 13545 | Houtchens, D. D. | Gainesville, TX 76240 | Oil & Gas Operator | Nov 2025 |
| 13546 | Houtchens, DD & Anna D LVNG TRST | Garland, TX 75043 | Oil Operator | Jun 2025 |
| 13547 | Hovas Enterprises | Perkins, OK 74059 | Oil & Gas Operator | Mar 2014 |
| 13548 | Hovgard & Fitzgerald | Abilene, TX 79608 | Oil & Gas Operator | Mar 1996 |
| 13549 | Hovivian Gregory E | La Crescenta, CA 91214 | Gas Operator | Dec 1999 |
| 13550 | Howard & Taylor | Wynnewood, OK 73098 | Oil & Gas Operator | Jul 2025 |
| 13551 | Howard Drilling Inc | Mount Jewett, PA 16740-0556 | Oil & Gas Operator | Dec 2024 |
| 13552 | Howard E. Caywood Inc. | | Oil & Gas Operator | Sep 2025 |
| 13553 | Howard Energy Co Inc | | Oil & Gas Operator | Aug 2011 |
| 13554 | Howard Exploration, Inc. | Houston, TX 77069 | Oil & Gas Operator | Nov 2025 |
| 13555 | Howard Operating Co. | Saint Jo, TX 76265 | Oil & Gas Operator | Nov 2025 |
| 13556 | Howard'S Well Service | | Oil Operator | Jul 2007 |
| 13557 | Howard, Anthony D | Philpot, KY 42366 | Oil Operator | Dec 2023 |
| 13558 | Howard, Anthony E. F. | Tyler, TX 75701 | Oil & Gas Operator | Jun 2001 |
| 13559 | Howard, Douglas J. | Houston, TX 77070 | Oil & Gas Operator | Mar 2008 |
| 13560 | Howard, Lorna Agent | | Oil & Gas Operator | Dec 2021 |
| 13561 | Howard, Patrick M. | Eden, NY 14057 | Gas Operator | Dec 2024 |
| 13562 | Howard, Terry | Cherry Creek, NY 14723 | Gas Operator | Dec 2024 |
| 13563 | Howco Oil And Gas | Stroud, OK 74079-9604 | Oil & Gas Operator | Mar 2015 |
| 13564 | Howden Petroleum Corp | Wetumka, OK 74883 | Gas Operator | Nov 1997 |
| 13565 | Howdyshell Pumping Inc | Logan, OH 43138 | Oil Operator | Dec 2024 |
| 13566 | Howe, Thomas L. | Hunt, NY 14846 | Gas Operator | Dec 2024 |
| 13567 | Howell & Sandlin, Inc. | Marshall, TX 75671 | Oil & Gas Operator | Jan 2001 |
| 13568 | Howell Bill J | Calvin, OK 74531-0248 | Oil & Gas Operator | Sep 2016 |
| 13569 | Howell C W | Wichita Falls, TX 76308 | Oil & Gas Operator | Apr 2015 |
| 13570 | Howell Crane & Rigging, Inc. | San Antonio, TX 78220 | Oil Operator | Nov 2025 |
| 13571 | Howell Drilling, Inc. | San Antonio, TX 78230 | Oil & Gas Operator | Aug 2003 |
| 13572 | Howell Jason | Wynona, OK 74084 | Oil Operator | Jul 2025 |
| 13573 | Howell Oil & Gas, Inc. | Marshall, TX 75671 | Oil & Gas Operator | Oct 2019 |
| 13574 | Howell Oil Compa | | Oil & Gas Operator | Aug 1995 |
| 13575 | Howell Oil Company | Hutchinson, KS 67504 | Oil & Gas Operator | Jun 2025 |
| 13576 | Howell Petroleum Corporation | Houston, TX 77251 | Oil & Gas Operator | Oct 2015 |
| 13577 | Howell'S Well Service, Inc. | | Oil & Gas Operator | Jul 2025 |
| 13578 | Howell, Betty L. | Lakewood, NY 14750 | Gas Operator | Dec 2024 |
| 13579 | Howell, Ray | Breckenridge, TX 76424 | Oil & Gas Operator | May 1998 |
| 13580 | Howells Oil & Gas | Graysville, OH 45734 | Oil & Gas Operator | Dec 2024 |
| 13581 | Howitzer Operating, LLC | Dallas, TX 75380 | Oil Operator | Nov 2025 |
| 13582 | Howle Operating Account, Inc. | Breckenridge, TX 76424 | Oil & Gas Operator | Dec 1999 |
| 13583 | Howle, A.G. | Breckenridge, TX 76424 | Oil & Gas Operator | Dec 2011 |
| 13584 | Howles, William A | Savona, NY 14879 | Gas Operator | Dec 2024 |
| 13585 | Hoy Production LLC | | Gas Operator | Aug 2025 |
| 13586 | Hoyt Energy L.L.C. | | Oil Operator | Sep 2025 |
| 13587 | Hoyt John C | Bartlesville, OK 74005-1316 | Oil Operator | Feb 2000 |
| 13588 | Hoyt Oil & Gas LLC | Cushing, OK 74023-0442 | Oil & Gas Operator | Jul 2025 |
| 13589 | HPC Energy LLC | Midland, TX 79703 | Oil & Gas Operator | Aug 2013 |
| 13590 | HPC Incorporated | Denver, CO 80202 | Oil & Gas Operator | Nov 1998 |
| 13591 | HPC Operating, Inc. | Dallas, TX 75379 | Oil & Gas Operator | Mar 2008 |
| 13592 | Hpoc, LLC | Cuba, NM 87013 | Oil Operator | Mar 2025 |
| 13593 | HPPC, Inc. | Midland, TX 79701 | Oil & Gas Operator | Feb 2023 |
| 13594 | HR Energy LLC | Shelby, MT 59474 | Oil & Gas Operator | Aug 2025 |
| 13595 | HR McClure | Scottdale, PA 15683-1533 | Gas Operator | Dec 2018 |
| 13596 | HR Petroleum | Corpus Chrsti, TX 78413 | Oil & Gas Operator | Apr 1998 |
| 13597 | HRB Oil | Houston, TX 77042 | Oil & Gas Operator | Oct 1998 |
| 13598 | HRB Operating Company, Inc. | Bridgeport, TX 76426 | Oil & Gas Operator | Nov 2025 |
| 13599 | Hrbacek Oil Corp. | La Grange, TX 78945 | Oil & Gas Operator | Feb 2004 |
| 13600 | Hrbek, R. L. | Merino, CO 80741 | Oil & Gas Operator | Jan 2024 |