| 13601 | Hopper, Thornton Co. | Midland, TX 79702 | Oil & Gas Operator | Dec 2025 |
| 13602 | Hoppes Helen E | Depew, OK 74028-3428 | Oil & Gas Operator | Apr 2015 |
| 13603 | Horadam, Henry L. | Victoria, TX 77905 | Oil & Gas Operator | Oct 2008 |
| 13604 | Horan, Ken L. | Cross Plains, TX 76443 | Gas Operator | May 2002 |
| 13605 | Horansky Burrell Revocable Trust | Wichita Falls, TX 76309 | Oil Operator | Dec 2025 |
| 13606 | Horany, Ray & Ernest | Olney, TX 76374 | Oil & Gas Operator | May 2002 |
| 13607 | Horizon Barnsdall Energy Part LTD I Osage Only | | Oil Operator | Feb 2012 |
| 13608 | Horizon Energy | Vergas, MN 56587 | Oil & Gas Operator | Dec 2025 |
| 13609 | Horizon Energy Corporation | Sand Fork, WV 26430 | Oil & Gas Operator | Dec 2021 |
| 13610 | Horizon Expl. & Dev. Co., Inc. | | Oil & Gas Operator | Jun 1995 |
| 13611 | Horizon Exploration Company | Houston, TX 77019 | Oil & Gas Operator | Aug 2002 |
| 13612 | Horizon Exploration Services | El Paso, TX 79922 | Oil Operator | Dec 2025 |
| 13613 | Horizon Natural Gas Company | Tulsa, OK 74170 | Oil & Gas Operator | Oct 2024 |
| 13614 | Horizon Natural Gas, LLC | | Oil & Gas Operator | Dec 2018 |
| 13615 | Horizon Natural Resources, Inc. | Tulsa, OK 74136 | Oil & Gas Operator | Jan 2019 |
| 13616 | Horizon Oil & Ga | | Oil & Gas Operator | Jan 1992 |
| 13617 | Horizon Oil & Gas Co. | Dallas, TX 75221 | Oil & Gas Operator | Jan 2005 |
| 13618 | Horizon Operating Co. | | Oil & Gas Operator | Dec 1995 |
| 13619 | Horizon Prod. And Operating, LLC | Houston, TX 77019 | Oil & Gas Operator | Dec 2025 |
| 13620 | Horizon Resources Inc | Fort Worth, TX 76101-1978 | Oil & Gas Operator | Jul 2006 |
| 13621 | Horizon Ridge Oil Company | Austin, TX 78738 | Oil Operator | Dec 2025 |
| 13622 | Horizon Well Services, Inc. | Abilene, TX 79604 | Oil & Gas Operator | Dec 2025 |
| 13623 | Horizontal Development & Production Inc | Lubbock, TX 79493 | Oil & Gas Operator | Jul 2002 |
| 13624 | Horn Eddie L Dba B & E Investments | Bristow, OK 74010 | Oil & Gas Operator | Aug 2025 |
| 13625 | Horn Energy | Eastland, TX 76448 | Oil & Gas Operator | Dec 2025 |
| 13626 | Horn Oil Company | Bristow, OK 74010 | Oil & Gas Operator | Aug 2025 |
| 13627 | Horn R L & Sons Drilling | | Oil Operator | Jun 1997 |
| 13628 | Horn, Henry L | | Oil Operator | Apr 2009 |
| 13629 | Horn, Tom D. | Pampa, TX 79066 | Gas Operator | Nov 2013 |
| 13630 | Horn, W. J. | Graham, TX 76450 | Oil & Gas Operator | Oct 2004 |
| 13631 | Horne & Moore Oil Co. | Holliday, TX 76366 | Oil & Gas Operator | Feb 2001 |
| 13632 | Horner Oil And Gas Production, Inc. | Cameron, WV 26033 | Oil & Gas Operator | Dec 2021 |
| 13633 | Horner Richard R | | Gas Operator | May 1995 |
| 13634 | Horning, Jeremiah | Penn Yan, NY 14527 | Gas Operator | Dec 2024 |
| 13635 | Horseshoe Oil Co | Cromwell, OK 74837 | Oil & Gas Operator | Dec 2021 |
| 13636 | Horseshoe Operating Inc. | Midland, TX 79701 | Oil & Gas Operator | Jan 2023 |
| 13637 | Horseshoe Production, LLC | Bryson, TX 76427 | Oil Operator | Dec 2025 |
| 13638 | Horst Energy LLC | Fort Worth, TX 76124 | Oil & Gas Operator | Jun 2019 |
| 13639 | Horst Oil, LLC | Pittsburg, MO 65724 | Oil Operator | Dec 2009 |
| 13640 | Hortin & Huffman Pet Geol | Worthington, OH 43085 | Oil & Gas Operator | Dec 2000 |
| 13641 | Horton & Freeman | | Oil Operator | Apr 1983 |
| 13642 | Horton Mary | Ratliff City, OK 73481 | Oil Operator | May 2020 |
| 13643 | Horton Oil Company | Independence, KS 67301 | Oil & Gas Operator | Jul 2000 |
| 13644 | Horton, Jack | Independence, KS 67301 | Oil & Gas Operator | Aug 2015 |
| 13645 | Horton, John | Sedan, KS 67361 | Oil & Gas Operator | Jun 2025 |
| 13646 | Hosco Operating Inc | Seminole, OK 74868-2447 | Oil & Gas Operator | Aug 2017 |
| 13647 | Hosford Energy Corporation | The Woodlands, TX 77380 | Oil & Gas Operator | Feb 1994 |
| 13648 | Hosston Oil Inc. | | Oil Operator | Dec 1993 |
| 13649 | Hostetler Glenn And Kristina Dba Hostetler Enterprises | Morris, OK 74445 | Oil Operator | Aug 2025 |
| 13650 | Hot Rod Oil | Vernal, UT 84078 | Oil & Gas Operator | Oct 2025 |
| 13651 | Hot Springs Resources LTD | Casper, WY 82601 | Oil Operator | Dec 2014 |
| 13652 | Hottel Glenn D | W Salem, OH 44287 | Oil & Gas Operator | Dec 1993 |
| 13653 | Hottel Oil & Gas LLC | Wooster, OH 44691-7639 | Oil & Gas Operator | Dec 2013 |
| 13654 | Hotulke Construction LLC | Seminole, OK 74868 | Oil & Gas Operator | Aug 2025 |
| 13655 | Hou-Tex Oil And Gas | | Oil & Gas Operator | Jul 1982 |
| 13656 | Hou-Tex, Inc. | Houston, TX 77224 | Oil & Gas Operator | Jun 2001 |
| 13657 | Houchin, O. E. Inc. | Olney, IL 62450 | Oil & Gas Operator | Feb 1997 |
| 13658 | Hough Oil And Gas | Hominy, OK 74035 | Oil Operator | Aug 2025 |
| 13659 | Houghton Investments LLC | Columbus, OH 43235 | Oil & Gas Operator | Dec 2024 |
| 13660 | Houghton Oil & Gas, Inc. | Midland, TX 79701 | Oil & Gas Operator | Mar 2009 |
| 13661 | Houma Operating Company, Inc. | | Oil & Gas Operator | Jun 1998 |
| 13662 | Houma Salt Water Disposal Corp | | Oil Operator | Dec 2020 |
| 13663 | Hound Resources LLC | | Oil & Gas Operator | Oct 2025 |
| 13664 | Hounds Oil & Gas LLC | Carbon Hill, OH 43111 | Oil & Gas Operator | Dec 2024 |
| 13665 | House Thomas J | | Oil Operator | May 2025 |
| 13666 | House, Dustin | Shawnee, KS 66218 | Oil Operator | May 2025 |
| 13667 | Houseco Petroleum Inc | Bristow, OK 74010-0842 | Oil & Gas Operator | Aug 2002 |
| 13668 | Householder Oil Co | Junction City, OH 43748 | Oil & Gas Operator | Dec 1988 |
| 13669 | Houseknecht Oil Producers Inc | | Oil & Gas Operator | Dec 1994 |
| 13670 | Housel John R Jr | | Oil Operator | Oct 1994 |
| 13671 | Housel, Robert E. | Cherryvale, KS 67335 | Oil & Gas Operator | Dec 2003 |
| 13672 | Houser, R. G. | | Oil Operator | Mar 1953 |
| 13673 | Houston Energy & Dev. Inc. | | Oil & Gas Operator | Apr 1994 |
| 13674 | Houston Energy Operating, L.P. | Houston, TX 77002 | Oil & Gas Operator | Jul 2020 |
| 13675 | Houston Energy, L.P. | Houston, TX 77002 | Oil & Gas Operator | Jan 2014 |
| 13676 | Houston Expl. & Prod. Co., Inc. | Austin, TX 78746 | Oil & Gas Operator | Aug 2003 |
| 13677 | Houston Exploration Co, The | Houston, TX 77002 | Oil & Gas Operator | Apr 2017 |
| 13678 | Houston Gulf Energy Corporation | The Woodlands, TX 77380 | Oil & Gas Operator | Dec 2025 |
| 13679 | Houston Hydrocarbons, Inc. (A) | Houston, TX 77042 | Oil & Gas Operator | Sep 2004 |
| 13680 | Houston Hydrolan | | Oil Operator | Jul 1984 |
| 13681 | Houston Oil & Gas Company, Inc. | Houston, TX 77063 | Oil & Gas Operator | Aug 1995 |
| 13682 | Houston Oil & Minerals Corp. | Houston, TX 77002 | Oil & Gas Operator | Aug 1996 |
| 13683 | Houston Oil And Minerals | | Oil & Gas Operator | Oct 1993 |
| 13684 | Houston Oil Fields Company | | Oil & Gas Operator | Apr 1987 |
| 13685 | Houston Oil Prod Enterprises,Inc | Houston, TX 77006 | Oil & Gas Operator | Dec 2025 |
| 13686 | Houston Operating, Inc. | Houston, TX 77027 | Oil & Gas Operator | Dec 2025 |
| 13687 | Houston Petroleum Company | Houston, TX 77027 | Oil & Gas Operator | Dec 2025 |
| 13688 | Houston Production Corporation | | Oil & Gas Operator | Jan 2004 |
| 13689 | Houston Resources Corp. | Houston, TX 77002 | Oil & Gas Operator | Apr 2003 |
| 13690 | Houtchens, D. D. | Gainesville, TX 76240 | Oil & Gas Operator | Dec 2025 |
| 13691 | Houtchens, DD & Anna D LVNG TRST | Garland, TX 75043 | Oil Operator | Jun 2025 |
| 13692 | Hovas Enterprises | Perkins, OK 74059 | Oil & Gas Operator | Mar 2014 |
| 13693 | Hovgard & Fitzgerald | Abilene, TX 79608 | Oil & Gas Operator | Mar 1996 |
| 13694 | Hovivian Gregory E | La Crescenta, CA 91214 | Gas Operator | Dec 1999 |
| 13695 | Howard & Taylor | Wynnewood, OK 73098 | Oil & Gas Operator | Aug 2025 |
| 13696 | Howard Drilling Inc | Mount Jewett, PA 16740-0556 | Oil & Gas Operator | Dec 2024 |
| 13697 | Howard E. Caywood Inc. | | Oil & Gas Operator | Oct 2025 |
| 13698 | Howard Energy Co Inc | | Oil & Gas Operator | Aug 2011 |
| 13699 | Howard Exploration, Inc. | Houston, TX 77069 | Oil & Gas Operator | Dec 2025 |
| 13700 | Howard Operating Co. | Saint Jo, TX 76265 | Oil & Gas Operator | Dec 2025 |