| 13701 | Howle, A.G. | Breckenridge, TX 76424 | Oil & Gas Operator | Dec 2011 |
| 13702 | Howles, William A | Savona, NY 14879 | Gas Operator | Dec 2023 |
| 13703 | Hoy Production LLC | | Gas Operator | Feb 2025 |
| 13704 | Hoyt Energy L.L.C. | | Oil Operator | Feb 2025 |
| 13705 | Hoyt John C | Bartlesville, OK 74005-1316 | Oil Operator | Feb 2000 |
| 13706 | Hoyt Oil & Gas LLC | Cushing, OK 74023-0442 | Oil & Gas Operator | Feb 2025 |
| 13707 | HPC Energy LLC | Midland, TX 79703 | Oil & Gas Operator | Aug 2013 |
| 13708 | HPC Incorporated | Denver, CO 80202 | Oil & Gas Operator | Nov 1998 |
| 13709 | HPC Operating, Inc. | Dallas, TX 75379 | Oil & Gas Operator | Mar 2008 |
| 13710 | Hpoc, LLC | Cuba, NM 87013 | Oil Operator | Dec 2024 |
| 13711 | HPPC, Inc. | Midland, TX 79701 | Oil & Gas Operator | Feb 2023 |
| 13712 | HR Energy LLC | Shelby, MT 59474 | Oil & Gas Operator | Mar 2025 |
| 13713 | HR McClure | Scottdale, PA 15683-1533 | Gas Operator | Dec 2018 |
| 13714 | HR Petroleum | Corpus Chrsti, TX 78413 | Oil & Gas Operator | Apr 1998 |
| 13715 | HRB Oil | Houston, TX 77042 | Oil & Gas Operator | Oct 1998 |
| 13716 | HRB Operating Company, Inc. | Bridgeport, TX 76426 | Oil & Gas Operator | May 2025 |
| 13717 | Hrbacek Oil Corp. | La Grange, TX 78945 | Oil & Gas Operator | Feb 2004 |
| 13718 | Hrbek, R.L. | Merino, CO 80741 | Oil & Gas Operator | Jan 2024 |
| 13719 | HRC Inc | Hobbs, NM 88241 | Gas Operator | Jun 2017 |
| 13720 | HRC Operating, LLC | Denver, CO 80202 | Oil & Gas Operator | Nov 2017 |
| 13721 | HRC Production Co | Houston, TX 77024 | Oil & Gas Operator | Jan 2025 |
| 13722 | HRF Exploration & Production LLC | Gaylord, MI 49734-0160 | Gas Operator | May 2025 |
| 13723 | HRF Exploration & Production,Inc | Denver, CO 80237 | Oil & Gas Operator | Mar 2009 |
| 13724 | HRH Energy Group Incorporated | Carrollton, TX 75006 | Oil & Gas Operator | Nov 2009 |
| 13725 | HRL Oilfields In | | Oil Operator | Jun 1998 |
| 13726 | HRM Resources II, LLC | Denver, CO 80202 | Oil & Gas Operator | Jan 2022 |
| 13727 | HRM Resources III LLC | Denver, CO 80202 | Oil & Gas Operator | Jun 2022 |
| 13728 | HRM Resources LLC | Denver, CO 80202 | Oil & Gas Operator | Aug 2015 |
| 13729 | Hronek, Kenneth | Caldwell, TX 77836 | Oil & Gas Operator | May 2025 |
| 13730 | Hrubetz Oil Co. | Dallas, TX 75225 | Oil Operator | Sep 1986 |
| 13731 | Hrubetz Operating Company | Dallas, TX 75225 | Oil & Gas Operator | Feb 1999 |
| 13732 | HS Resources | Tulsa, OK 74136 | Oil & Gas Operator | Aug 1997 |
| 13733 | HS Resources, Inc. | Denver, CO 80202 | Oil & Gas Operator | Dec 2005 |
| 13734 | Hsumy Oil & Gas, Inc. | Oklahoma City, OK 73102 | Oil & Gas Operator | Apr 2007 |
| 13735 | HTC Gas Company, LLC | Hindman, KY 41822 | Gas Operator | Dec 2023 |
| 13736 | Hub Oil Company | | Oil Operator | Jan 1990 |
| 13737 | Hub-Cap Oil Company | Arlington, TX 76016 | Oil & Gas Operator | Dec 2013 |
| 13738 | Hub-Hill Inc | San Antonio, TX 78230 | Oil Operator | Nov 1998 |
| 13739 | Hubbard Creek Coal Gas LLC | | Gas Operator | Apr 2025 |
| 13740 | Hubbard Operating | Ozona, TX 76943 | Gas Operator | May 2025 |
| 13741 | Hubbs III, LLC | | Oil & Gas Operator | Mar 2024 |
| 13742 | Hubcap Oil, LLC | Boerne, TX 78015 | Oil Operator | May 2025 |
| 13743 | Hubco Exploration Inc. | Houston, TX 77073 | Oil & Gas Operator | Sep 2002 |
| 13744 | Huber Corporation* J M | | Oil & Gas Operator | Feb 2008 |
| 13745 | Huber Energy L.P. | Houston, TX 77079 | Oil & Gas Operator | Feb 2007 |
| 13746 | Huber Energy Panhandle LP | Houston, TX 77079 | Oil & Gas Operator | Oct 2005 |
| 13747 | Huber J M Corp | Edison, NJ 08837 | Oil & Gas Operator | May 2025 |
| 13748 | Huber J M Corpor | | Oil & Gas Operator | Dec 1996 |
| 13749 | Huber Oil Company, A General Partnership | Madison, KS 66860 | Oil & Gas Operator | Nov 2024 |
| 13750 | Hubl/Harbin | | Oil Operator | Dec 1994 |
| 13751 | Hubler John | Tulsa, OK 74133-2716 | Oil & Gas Operator | Mar 2015 |
| 13752 | Huck Farms LLC | Stratford, OK 74872 | Oil & Gas Operator | Mar 2025 |
| 13753 | Hudgens Lester E | Bartlesville, OK 74006-0215 | Oil Operator | Mar 2015 |
| 13754 | Hudgens Operating Co., Inc. | Abilene, TX 79603 | Oil & Gas Operator | Jul 1995 |
| 13755 | Hudson Brothers Mining Co., Inc. | Cisco, TX 76437 | Oil & Gas Operator | Jun 1994 |
| 13756 | Hudson Brothers, Inc. | Hutchinson, KS 67501 | Oil & Gas Operator | Jun 2007 |
| 13757 | Hudson Energy LLC | | Oil Operator | Nov 2024 |
| 13758 | Hudson Group LLC | Casper, WY 82601 | Oil & Gas Operator | Feb 2025 |
| 13759 | Hudson Oil Company Of Texas | Fort Worth, TX 76102 | Oil & Gas Operator | Mar 2025 |
| 13760 | Hudson, Comer Oil & Gas | Cisco, TX 76437 | Oil & Gas Operator | Jan 2003 |
| 13761 | Huey Dean | | Oil Operator | Oct 2000 |
| 13762 | Hueysville Gas Co | Eastern, KY 41622 | Gas Operator | Dec 2014 |
| 13763 | Hufco, Incorporated | | Oil & Gas Operator | Dec 2020 |
| 13764 | Huff Minerals, LTD. | Amarillo, TX 79101 | Gas Operator | May 2025 |
| 13765 | Huff, Jack | Midland, TX 79710 | Oil & Gas Operator | Dec 2004 |
| 13766 | Huffco Petroleum Corporation | | Oil & Gas Operator | Jul 1988 |
| 13767 | Huffman Arthur | Waynesburg, PA 15370-1437 | Gas Operator | Dec 2024 |
| 13768 | Huffman, H. L., LTD. | Fort Worth, TX 76113 | Oil & Gas Operator | Sep 1994 |
| 13769 | Huffman-Bowers Inc | New Lexington, OH 43764 | Oil & Gas Operator | Dec 2024 |
| 13770 | Hufo Production Corporation | Midland, TX 79702 | Oil & Gas Operator | Jul 2002 |
| 13771 | Huggs & McConathy,Et Al | | Oil & Gas Operator | Dec 1985 |
| 13772 | Huggs Inc. | Shreveport, LA 71101 | Oil & Gas Operator | Apr 2003 |
| 13773 | Huggs Inc. & Bec, Et Al | | Oil & Gas Operator | Feb 1998 |
| 13774 | Huggs Incorporated, Et Al | | Oil & Gas Operator | Feb 1998 |
| 13775 | Hugh A. Hawthorne, Et Al | | Oil & Gas Operator | Dec 1978 |
| 13776 | Hughes & Hughes | | Oil & Gas Operator | May 1984 |
| 13777 | Hughes & New Oil Co. | | Oil Operator | Jul 1993 |
| 13778 | Hughes & New-D. Braswell | | Oil & Gas Operator | Jun 1983 |
| 13779 | Hughes & Patterson Oper. Corp. | Albany, TX 76430 | Oil & Gas Operator | May 2025 |
| 13780 | Hughes & Shawver | Olney, TX 76374 | Oil & Gas Operator | Aug 1996 |
| 13781 | Hughes Denny Offshore Expl Inc | | Oil & Gas Operator | Nov 1988 |
| 13782 | Hughes Drilling Co, A General Partnership | Wellsville, KS 66092 | Oil Operator | Jan 2025 |
| 13783 | Hughes Drilling Co. | Enid, OK 73702 | Oil & Gas Operator | Apr 1998 |
| 13784 | Hughes Eastern Corporation | Ridgeland, MS 39157 | Oil & Gas Operator | Feb 2025 |
| 13785 | Hughes Eastern Petroleum, Inc. | | Oil & Gas Operator | Apr 1993 |
| 13786 | Hughes Eastern Petroleum, LTD. | | Oil & Gas Operator | Jun 1986 |
| 13787 | Hughes Gas Systems LLC | Dallas, TX 75214 | Oil & Gas Operator | Feb 2025 |
| 13788 | Hughes George B | Asher, OK 74826-0165 | Oil & Gas Operator | Mar 2011 |
| 13789 | Hughes Legacy LLC | Houston, TX 77002 | Oil & Gas Operator | Jul 2022 |
| 13790 | Hughes Oil Company Inc | Odessa, TX 79765 | Oil & Gas Operator | Feb 2004 |
| 13791 | Hughes Petroleum Corp. | | Oil Operator | Dec 1972 |
| 13792 | Hughes River Oil & Gas Company | Walker, WV 26180-0000 | Oil & Gas Operator | Dec 2021 |
| 13793 | Hughes Services, LLC | Wellsville, KS 66092 | Oil Operator | Dec 2024 |
| 13794 | Hughes Supplies, Inc. | Greenwood, LA 71033 | Oil & Gas Operator | Jul 2019 |
| 13795 | Hughes, Bill Drilling, Inc. | Graham, TX 76450 | Oil & Gas Operator | May 2025 |
| 13796 | Hughes, Bob Oil Company | San Angelo, TX 76901 | Oil & Gas Operator | Jul 2011 |
| 13797 | Hughes, Dan A. Company | Beeville, TX 78104 | Oil & Gas Operator | May 2006 |
| 13798 | Hughes, Dan A. Company, L.P. | Beeville, TX 78104 | Oil & Gas Operator | May 2025 |
| 13799 | Hughes, Wise & Assoc., Inc | | Oil Operator | Jul 1987 |
| 13800 | Hughes-Denny Petroleum Co.,Inc | | Oil & Gas Operator | Dec 1987 |