| 13801 | Houghton Oil & Gas, Inc. | Midland, TX 79701 | Oil & Gas Operator | Mar 2009 |
| 13802 | Houma Operating Company, Inc. | | Oil & Gas Operator | Jun 1998 |
| 13803 | Houma Salt Water Disposal Corp | | Oil Operator | Dec 2020 |
| 13804 | Hound Resources LLC | | Oil & Gas Operator | Dec 2024 |
| 13805 | Hounds Oil & Gas LLC | Carbon Hill, OH 43111 | Oil & Gas Operator | Dec 2023 |
| 13806 | House Thomas J | | Oil Operator | Jun 2024 |
| 13807 | House, Dustin | Shawnee, KS 66218 | Oil Operator | Nov 2024 |
| 13808 | Houseco Petroleum Inc | Bristow, OK 74010-0842 | Oil & Gas Operator | Aug 2002 |
| 13809 | Householder Oil Co | Junction City, OH 43748 | Oil & Gas Operator | Dec 1988 |
| 13810 | Houseknecht Oil Producers Inc | | Oil & Gas Operator | Dec 1994 |
| 13811 | Housel John R Jr | | Oil Operator | Oct 1994 |
| 13812 | Housel, Robert E. | Cherryvale, KS 67335 | Oil & Gas Operator | Dec 2003 |
| 13813 | Houser, R. G. | | Oil Operator | Mar 1953 |
| 13814 | Houston Energy & Dev. Inc. | | Oil & Gas Operator | Apr 1994 |
| 13815 | Houston Energy Operating, L.P. | Houston, TX 77002 | Oil & Gas Operator | Jul 2020 |
| 13816 | Houston Energy, L.P. | Houston, TX 77002 | Oil & Gas Operator | Jan 2014 |
| 13817 | Houston Expl. & Prod. Co., Inc. | Austin, TX 78746 | Oil & Gas Operator | Aug 2003 |
| 13818 | Houston Exploration Co, The | Houston, TX 77002 | Oil & Gas Operator | Apr 2017 |
| 13819 | Houston Gulf Energy Corporation | The Woodlands, TX 77380 | Oil & Gas Operator | Apr 2025 |
| 13820 | Houston Hydrocarbons, Inc. (A) | Houston, TX 77042 | Oil & Gas Operator | Sep 2004 |
| 13821 | Houston Hydrolan | | Oil Operator | Jul 1984 |
| 13822 | Houston Oil & Gas Company, Inc. | Houston, TX 77063 | Oil & Gas Operator | Aug 1995 |
| 13823 | Houston Oil & Minerals Corp. | Houston, TX 77002 | Oil & Gas Operator | Aug 1996 |
| 13824 | Houston Oil And Minerals | | Oil & Gas Operator | Oct 1993 |
| 13825 | Houston Oil Fields Company | | Oil & Gas Operator | Apr 1987 |
| 13826 | Houston Oil Prod Enterprises,Inc | Houston, TX 77006 | Oil & Gas Operator | Apr 2025 |
| 13827 | Houston Operating, Inc. | Houston, TX 77027 | Oil & Gas Operator | Apr 2025 |
| 13828 | Houston Petroleum Company | Houston, TX 77027 | Oil & Gas Operator | Apr 2025 |
| 13829 | Houston Production Corporation | | Oil & Gas Operator | Jan 2004 |
| 13830 | Houston Resources Corp. | Houston, TX 77002 | Oil & Gas Operator | Apr 2003 |
| 13831 | Houtchens, D. D. | Gainesville, TX 76240 | Oil & Gas Operator | Apr 2025 |
| 13832 | Houtchens, DD & Anna D LVNG TRST | Garland, TX 75043 | Oil Operator | Apr 2025 |
| 13833 | Hovas Enterprises | Perkins, OK 74059 | Oil & Gas Operator | Mar 2014 |
| 13834 | Hovgard & Fitzgerald | Abilene, TX 79608 | Oil & Gas Operator | Mar 1996 |
| 13835 | Hovivian Gregory E | La Crescenta, CA 91214 | Gas Operator | Dec 1999 |
| 13836 | Howard & Taylor | Wynnewood, OK 73098-9234 | Oil & Gas Operator | Jan 2025 |
| 13837 | Howard Drilling Inc | Mount Jewett, PA 16740-0556 | Oil & Gas Operator | Dec 2024 |
| 13838 | Howard E. Caywood Inc. | | Oil & Gas Operator | Dec 2024 |
| 13839 | Howard Energy Co Inc | Traverse City, MI 49684 | Oil & Gas Operator | Jun 2014 |
| 13840 | Howard Exploration, Inc. | Houston, TX 77069 | Oil & Gas Operator | Apr 2025 |
| 13841 | Howard Operating Co. | Saint Jo, TX 76265 | Oil & Gas Operator | Apr 2025 |
| 13842 | Howard'S Well Service | | Oil Operator | Jul 2007 |
| 13843 | Howard, Anthony D | Philpot, KY 42366 | Oil Operator | Dec 2023 |
| 13844 | Howard, Anthony E. F. | Tyler, TX 75701 | Oil & Gas Operator | Jun 2001 |
| 13845 | Howard, Douglas J. | Houston, TX 77070 | Oil & Gas Operator | Mar 2008 |
| 13846 | Howard, Lorna Agent | | Oil & Gas Operator | Dec 2021 |
| 13847 | Howard, Patrick M. | Eden, NY 14057 | Gas Operator | Dec 2023 |
| 13848 | Howard, Terry | Cherry Creek, NY 14723 | Gas Operator | Dec 2023 |
| 13849 | Howco Oil And Gas | Stroud, OK 74079-9604 | Oil & Gas Operator | Mar 2015 |
| 13850 | Howden Petroleum Corp | Wetumka, OK 74883 | Gas Operator | Nov 1997 |
| 13851 | Howdyshell Pumping Inc | Logan, OH 43138 | Oil Operator | Dec 2023 |
| 13852 | Howe, Thomas L. | Hunt, NY 14846 | Gas Operator | Dec 2023 |
| 13853 | Howell & Sandlin, Inc. | Marshall, TX 75671 | Oil & Gas Operator | Jan 2001 |
| 13854 | Howell Bill J | Calvin, OK 74531-0248 | Oil & Gas Operator | Sep 2016 |
| 13855 | Howell C W | Wichita Falls, TX 76308 | Oil & Gas Operator | Apr 2015 |
| 13856 | Howell Crane & Rigging, Inc. | San Antonio, TX 78220 | Oil Operator | Apr 2025 |
| 13857 | Howell Drilling, Inc. | San Antonio, TX 78230 | Oil & Gas Operator | Aug 2003 |
| 13858 | Howell Jason | Wynona, OK 74084 | Oil Operator | Jan 2025 |
| 13859 | Howell Oil & Gas, Inc. | Marshall, TX 75671 | Oil & Gas Operator | Oct 2019 |
| 13860 | Howell Oil Compa | | Oil & Gas Operator | Aug 1995 |
| 13861 | Howell Oil Company | Hutchinson, KS 67504 | Oil & Gas Operator | Dec 2024 |
| 13862 | Howell Petroleum Corporation | Houston, TX 77251 | Oil & Gas Operator | Oct 2015 |
| 13863 | Howell'S Well Service, Inc. | | Oil & Gas Operator | Jan 2025 |
| 13864 | Howell, Betty L. | Lakewood, NY 14750 | Gas Operator | Dec 2023 |
| 13865 | Howell, Ray | Breckenridge, TX 76424 | Oil & Gas Operator | May 1998 |
| 13866 | Howells Oil & Gas | Graysville, OH 45734 | Oil & Gas Operator | Dec 2024 |
| 13867 | Howitzer Operating, LLC | Farmers BRNCH, TX 75234 | Oil Operator | Apr 2025 |
| 13868 | Howle Operating Account, Inc. | Breckenridge, TX 76424 | Oil & Gas Operator | Dec 1999 |
| 13869 | Howle, A.G. | Breckenridge, TX 76424 | Oil & Gas Operator | Dec 2011 |
| 13870 | Howles, William A | Savona, NY 14879 | Gas Operator | Dec 2023 |
| 13871 | Hoy Production LLC | | Gas Operator | Dec 2024 |
| 13872 | Hoyt Energy L.L.C. | | Oil Operator | Dec 2024 |
| 13873 | Hoyt John C | Bartlesville, OK 74005-1316 | Oil Operator | Feb 2000 |
| 13874 | Hoyt Oil & Gas LLC | Cushing, OK 74023-0442 | Oil & Gas Operator | Jan 2025 |
| 13875 | HPC Energy LLC | Midland, TX 79703 | Oil & Gas Operator | Aug 2013 |
| 13876 | HPC Incorporated | Denver, CO 80202 | Oil & Gas Operator | Nov 1998 |
| 13877 | HPC Operating, Inc. | Dallas, TX 75379 | Oil & Gas Operator | Mar 2008 |
| 13878 | Hpoc, LLC | Cuba, NM 87013 | Oil Operator | Dec 2024 |
| 13879 | HPPC, Inc. | Midland, TX 79701 | Oil & Gas Operator | Feb 2023 |
| 13880 | HR Energy LLC | Shelby, MT 59474 | Oil & Gas Operator | Jan 2025 |
| 13881 | HR McClure | Scottdale, PA 15683-1533 | Gas Operator | Dec 2018 |
| 13882 | HR Petroleum | Corpus Chrsti, TX 78413 | Oil & Gas Operator | Apr 1998 |
| 13883 | HRB Oil | Houston, TX 77042 | Oil & Gas Operator | Oct 1998 |
| 13884 | HRB Operating Company Inc | Bridgeport, TX 76426 | Oil & Gas Operator | Apr 2025 |
| 13885 | Hrbacek Oil Corp. | La Grange, TX 78945 | Oil & Gas Operator | Feb 2004 |
| 13886 | Hrbek, R.L. | Merino, CO 80741 | Oil & Gas Operator | Dec 2023 |
| 13887 | HRC Inc | Hobbs, NM 88241 | Gas Operator | Jun 2017 |
| 13888 | HRC Operating, LLC | Denver, CO 80202 | Oil & Gas Operator | Nov 2017 |
| 13889 | HRC Production Co | Houston, TX 77002 | Oil & Gas Operator | Jan 2025 |
| 13890 | HRF Exploration & Production LLC | Gaylord, MI 49734-0160 | Gas Operator | Apr 2025 |
| 13891 | HRF Exploration & Production,Inc | Denver, CO 80237 | Oil & Gas Operator | Mar 2009 |
| 13892 | HRH Energy Group Incorporated | Carrollton, TX 75006 | Oil & Gas Operator | Nov 2009 |
| 13893 | HRL Oilfields In | | Oil Operator | Jun 1998 |
| 13894 | HRM Resources II, LLC | Denver, CO 80202 | Oil & Gas Operator | Jan 2022 |
| 13895 | HRM Resources III LLC | Denver, CO 80202 | Oil & Gas Operator | Jun 2022 |
| 13896 | HRM Resources LLC | Denver, CO 80202 | Oil & Gas Operator | Aug 2015 |
| 13897 | Hronek, Kenneth | Caldwell, TX 77836 | Oil & Gas Operator | Apr 2025 |
| 13898 | Hrubetz Oil Co. | Dallas, TX 75225 | Oil Operator | Sep 1986 |
| 13899 | Hrubetz Operating Company | Dallas, TX 75225 | Oil & Gas Operator | Feb 1999 |
| 13900 | HS Resources | Tulsa, OK 74136 | Oil & Gas Operator | Aug 1997 |