| 13801 | Howard'S Well Service | | Oil Operator | Jul 2007 |
| 13802 | Howard, Anthony D | Philpot, KY 42366 | Oil Operator | Dec 2023 |
| 13803 | Howard, Anthony E. F. | Tyler, TX 75701 | Oil & Gas Operator | Jun 2001 |
| 13804 | Howard, Douglas J. | Houston, TX 77070 | Oil & Gas Operator | Mar 2008 |
| 13805 | Howard, Lorna Agent | | Oil & Gas Operator | Dec 2021 |
| 13806 | Howard, Patrick M. | Eden, NY 14057 | Gas Operator | Dec 2024 |
| 13807 | Howard, Terry | Cherry Creek, NY 14723 | Gas Operator | Dec 2024 |
| 13808 | Howco Oil And Gas | Stroud, OK 74079-9604 | Oil & Gas Operator | Mar 2015 |
| 13809 | Howden Petroleum Corp | Wetumka, OK 74883 | Gas Operator | Nov 1997 |
| 13810 | Howdyshell Pumping Inc | Logan, OH 43138 | Oil Operator | Dec 2024 |
| 13811 | Howe, Thomas L. | Hunt, NY 14846 | Gas Operator | Dec 2024 |
| 13812 | Howell & Sandlin, Inc. | Marshall, TX 75671 | Oil & Gas Operator | Jan 2001 |
| 13813 | Howell Bill J | Calvin, OK 74531-0248 | Oil & Gas Operator | Sep 2016 |
| 13814 | Howell C W | Wichita Falls, TX 76308 | Oil & Gas Operator | Apr 2015 |
| 13815 | Howell Crane & Rigging, Inc. | San Antonio, TX 78220 | Oil Operator | Feb 2026 |
| 13816 | Howell Drilling, Inc. | San Antonio, TX 78230 | Oil & Gas Operator | Aug 2003 |
| 13817 | Howell Jason | Wynona, OK 74084 | Oil Operator | Oct 2025 |
| 13818 | Howell Oil & Gas, Inc. | Marshall, TX 75671 | Oil & Gas Operator | Oct 2019 |
| 13819 | Howell Oil Compa | | Oil & Gas Operator | Aug 1995 |
| 13820 | Howell Oil Company | Hutchinson, KS 67504 | Oil & Gas Operator | Sep 2025 |
| 13821 | Howell Petroleum Corporation | Houston, TX 77251 | Oil & Gas Operator | Oct 2015 |
| 13822 | Howell'S Well Service, Inc. | | Oil & Gas Operator | Oct 2025 |
| 13823 | Howell, Betty L. | Lakewood, NY 14750 | Gas Operator | Dec 2024 |
| 13824 | Howell, Ray | Breckenridge, TX 76424 | Oil & Gas Operator | May 1998 |
| 13825 | Howells Oil & Gas | Graysville, OH 45734 | Oil & Gas Operator | Dec 2024 |
| 13826 | Howitzer Operating, LLC | Dallas, TX 75380 | Oil Operator | Feb 2026 |
| 13827 | Howle Operating Account, Inc. | Breckenridge, TX 76424 | Oil & Gas Operator | Dec 1999 |
| 13828 | Howle, A.G. | Breckenridge, TX 76424 | Oil & Gas Operator | Dec 2011 |
| 13829 | Howles, William A | Savona, NY 14879 | Gas Operator | Dec 2024 |
| 13830 | Hoy Production LLC | | Gas Operator | Nov 2025 |
| 13831 | Hoyt Energy L.L.C. | | Oil Operator | Oct 2025 |
| 13832 | Hoyt John C | Bartlesville, OK 74005-1316 | Oil Operator | Feb 2000 |
| 13833 | Hoyt Oil & Gas LLC | Cushing, OK 74023-0442 | Oil & Gas Operator | Oct 2025 |
| 13834 | HP Operating LLC | Seminole, OK 74868 | Oil Operator | Oct 2025 |
| 13835 | HPC Energy LLC | Midland, TX 79703 | Oil & Gas Operator | Aug 2013 |
| 13836 | HPC Incorporated | Denver, CO 80202 | Oil & Gas Operator | Nov 1998 |
| 13837 | HPC Operating, Inc. | Dallas, TX 75379 | Oil & Gas Operator | Mar 2008 |
| 13838 | Hpoc, LLC | Cuba, NM 87013 | Oil Operator | Mar 2025 |
| 13839 | HPPC, Inc. | Midland, TX 79701 | Oil & Gas Operator | Sep 2025 |
| 13840 | HR Energy LLC | Shelby, MT 59474 | Oil & Gas Operator | Nov 2025 |
| 13841 | HR McClure | Scottdale, PA 15683-1533 | Gas Operator | Dec 2018 |
| 13842 | HR Petroleum | Corpus Chrsti, TX 78413 | Oil & Gas Operator | Apr 1998 |
| 13843 | HRB Oil | Houston, TX 77042 | Oil & Gas Operator | Oct 1998 |
| 13844 | HRB Operating Company, Inc. | Bridgeport, TX 76426 | Oil & Gas Operator | Feb 2026 |
| 13845 | Hrbacek Oil Corp. | La Grange, TX 78945 | Oil & Gas Operator | Feb 2004 |
| 13846 | Hrbek, R. L. | Merino, CO 80741 | Oil & Gas Operator | Jan 2024 |
| 13847 | HRC Inc | Hobbs, NM 88241 | Gas Operator | Jun 2017 |
| 13848 | HRC Operating, LLC | Denver, CO 80202 | Oil & Gas Operator | Nov 2017 |
| 13849 | HRC Production Co | Houston, TX 77024 | Oil & Gas Operator | Oct 2025 |
| 13850 | HRF Exploration & Production LLC | Gaylord, MI 49734-0160 | Gas Operator | Feb 2026 |
| 13851 | HRF Exploration & Production,Inc | Denver, CO 80237 | Oil & Gas Operator | Mar 2009 |
| 13852 | HRH Energy Group Incorporated | Carrollton, TX 75006 | Oil & Gas Operator | Nov 2009 |
| 13853 | HRL Oilfields In | | Oil Operator | Jun 1998 |
| 13854 | HRM Resources II, LLC | Denver, CO 80202 | Oil & Gas Operator | Jan 2022 |
| 13855 | HRM Resources III LLC | Denver, CO 80202 | Oil & Gas Operator | Jun 2022 |
| 13856 | HRM Resources LLC | Denver, CO 80202 | Oil & Gas Operator | Aug 2015 |
| 13857 | Hronek, Kenneth | Caldwell, TX 77836 | Oil & Gas Operator | Feb 2026 |
| 13858 | Hrubetz Oil Co. | Dallas, TX 75225 | Oil Operator | Sep 1986 |
| 13859 | Hrubetz Operating Company | Dallas, TX 75225 | Oil & Gas Operator | Feb 1999 |
| 13860 | HS Resources | Tulsa, OK 74136 | Oil & Gas Operator | Aug 1997 |
| 13861 | HS Resources, Inc. | Denver, CO 80202 | Oil & Gas Operator | Sep 2002 |
| 13862 | Hsumy Oil & Gas, Inc. | Oklahoma City, OK 73102 | Oil & Gas Operator | Apr 2007 |
| 13863 | HT2 Exploration LLC | The Woodlands, TX 77381-4198 | Oil Operator | Oct 2025 |
| 13864 | HTC Gas Company, LLC | Hindman, KY 41822 | Gas Operator | Dec 2023 |
| 13865 | HTR Operating Co., Inc. | Hurst, TX 76053 | Oil & Gas Operator | Feb 2026 |
| 13866 | Hub Oil Company | | Oil Operator | Jan 1990 |
| 13867 | Hub-Cap Oil Company | Arlington, TX 76016 | Oil & Gas Operator | Dec 2013 |
| 13868 | Hub-Hill Inc | San Antonio, TX 78230 | Oil Operator | Nov 1998 |
| 13869 | Hubbard Creek Coal Gas LLC | | Gas Operator | Nov 2025 |
| 13870 | Hubbard Operating | Ozona, TX 76943 | Gas Operator | Feb 2026 |
| 13871 | Hubbs III, LLC | | Oil & Gas Operator | Mar 2024 |
| 13872 | Hubcap Oil, LLC | Boerne, TX 78015 | Oil Operator | Feb 2026 |
| 13873 | Hubco Exploration Inc. | Houston, TX 77073 | Oil & Gas Operator | Sep 2002 |
| 13874 | Huber Energy L.P. | Houston, TX 77079 | Oil & Gas Operator | Feb 2007 |
| 13875 | Huber Energy Panhandle LP | Houston, TX 77079 | Oil & Gas Operator | Oct 2005 |
| 13876 | Huber J M Corp | Edison, NJ 08837 | Oil & Gas Operator | Feb 2026 |
| 13877 | Huber J M Corpor | | Oil & Gas Operator | Dec 1996 |
| 13878 | Huber Oil Company, A General Partnership | Madison, KS 66860 | Oil & Gas Operator | Feb 2025 |
| 13879 | Hubl/Harbin | | Oil Operator | Dec 1994 |
| 13880 | Hubler John | Tulsa, OK 74133-2716 | Oil & Gas Operator | Mar 2015 |
| 13881 | Huck Farms LLC | Stratford, OK 74872 | Oil & Gas Operator | Oct 2025 |
| 13882 | Huck Thomas | Marietta, OH 45750 | Gas Operator | Dec 2000 |
| 13883 | Huddleston Oil And Gas Company | Millsap, TX 76066 | Gas Operator | Dec 2002 |
| 13884 | Hudgens Lester E | Bartlesville, OK 74006-0215 | Oil Operator | Mar 2015 |
| 13885 | Hudgens Operating Co., Inc. | Abilene, TX 79603 | Oil & Gas Operator | Jul 1995 |
| 13886 | Hudson Brothers Mining Co., Inc. | Cisco, TX 76437 | Oil & Gas Operator | Jun 1994 |
| 13887 | Hudson Brothers, Inc. | Hutchinson, KS 67501 | Oil & Gas Operator | Jun 2007 |
| 13888 | Hudson Energy LLC | | Oil Operator | Oct 2025 |
| 13889 | Hudson Group LLC | Casper, WY 82601 | Oil & Gas Operator | Jul 2025 |
| 13890 | Hudson Oil Company Of Texas | Fort Worth, TX 76102 | Oil & Gas Operator | Apr 2025 |
| 13891 | Hudson, Comer Oil & Gas | Cisco, TX 76437 | Oil & Gas Operator | Jan 2003 |
| 13892 | Huey Dean | | Oil Operator | Oct 2000 |
| 13893 | Hueysville Gas Co | Eastern, KY 41622 | Gas Operator | Dec 2014 |
| 13894 | Hufco, Incorporated | | Oil & Gas Operator | Dec 2020 |
| 13895 | Huff Minerals, LTD. | Amarillo, TX 79101 | Gas Operator | Feb 2026 |
| 13896 | Huff, Jack | Midland, TX 79710 | Oil & Gas Operator | Dec 2004 |
| 13897 | Huffco Petroleum Corporation | | Oil & Gas Operator | Jul 1988 |
| 13898 | Huffman Arthur | Waynesburg, PA 15370-1437 | Gas Operator | Dec 2024 |
| 13899 | Huffman, H. L., LTD. | Fort Worth, TX 76113 | Oil & Gas Operator | Sep 1994 |
| 13900 | Huffman-Bowers Inc | New Lexington, OH 43764 | Oil & Gas Operator | Dec 2024 |