| 2801 | Houseco Petroleum Inc | Bristow, OK 74010-0842 | Oil & Gas Operator | Aug 2002 |
| 2802 | Houston Exploration Co, The | Houston, TX 77002 | Oil & Gas Operator | Apr 2017 |
| 2803 | Hovas Enterprises | Perkins, OK 74059 | Oil & Gas Operator | Mar 2014 |
| 2804 | Howard & Taylor | Wynnewood, OK 73098 | Oil & Gas Operator | Oct 2025 |
| 2805 | Howco Oil And Gas | Stroud, OK 74079-9604 | Oil & Gas Operator | Mar 2015 |
| 2806 | Howden Petroleum Corp | Wetumka, OK 74883 | Gas Operator | Nov 1997 |
| 2807 | Howell Bill J | Calvin, OK 74531-0248 | Oil & Gas Operator | Sep 2016 |
| 2808 | Howell C W | Wichita Falls, TX 76308 | Oil & Gas Operator | Apr 2015 |
| 2809 | Howell Jason | Wynona, OK 74084 | Oil Operator | Oct 2025 |
| 2810 | Howell'S Well Service, Inc. | | Oil & Gas Operator | Oct 2025 |
| 2811 | Hoyt John C | Bartlesville, OK 74005-1316 | Oil Operator | Feb 2000 |
| 2812 | Hoyt Oil & Gas LLC | Cushing, OK 74023-0442 | Oil & Gas Operator | Oct 2025 |
| 2813 | HP Operating LLC | Seminole, OK 74868 | Oil Operator | Oct 2025 |
| 2814 | HPC Incorporated | Denver, CO 80202 | Oil & Gas Operator | Nov 1998 |
| 2815 | HRB Operating Company, Inc. | Bridgeport, TX 76426 | Oil & Gas Operator | Dec 2025 |
| 2816 | HRC Production Co | Houston, TX 77024 | Oil & Gas Operator | Oct 2025 |
| 2817 | HRF Exploration & Production LLC | Gaylord, MI 49734-0160 | Gas Operator | Dec 2025 |
| 2818 | Hsumy Oil & Gas, Inc. | Oklahoma City, OK 73102 | Oil & Gas Operator | Apr 2007 |
| 2819 | HT2 Exploration LLC | The Woodlands, TX 77381-4198 | Oil Operator | Oct 2025 |
| 2820 | Hub-Hill Inc | San Antonio, TX 78230 | Oil Operator | Nov 1998 |
| 2821 | Huber Energy Panhandle LP | Houston, TX 77079 | Oil & Gas Operator | Oct 2005 |
| 2822 | Huber J M Corp | Edison, NJ 08837 | Oil & Gas Operator | Dec 2025 |
| 2823 | Hubler John | Tulsa, OK 74133-2716 | Oil & Gas Operator | Mar 2015 |
| 2824 | Huck Farms LLC | Stratford, OK 74872 | Oil & Gas Operator | Oct 2025 |
| 2825 | Hudgens Lester E | Bartlesville, OK 74006-0215 | Oil Operator | Mar 2015 |
| 2826 | Hudson Energy LLC | | Oil Operator | Oct 2025 |
| 2827 | Hughes Drilling Co Inc | Enid, OK 73702 | Oil & Gas Operator | Apr 1998 |
| 2828 | Hughes Gas Systems LLC | Oklahoma City, OK 73118-4821 | Oil & Gas Operator | Oct 2025 |
| 2829 | Hughes George B | Asher, OK 74826-0165 | Oil & Gas Operator | Mar 2011 |
| 2830 | Hugoton Energy Corporation | Oklahoma City, OK 73113 | Oil & Gas Operator | Dec 2019 |
| 2831 | Huitt Joe A | Tulsa, OK 74103 | Oil & Gas Operator | May 2001 |
| 2832 | Huitt Joe A Rev Trust | Tulsa, OK 74103 | Oil & Gas Operator | Oct 2009 |
| 2833 | Hulen Operating Company | Nichols Hill, OK 73116 | Oil & Gas Operator | Dec 2025 |
| 2834 | Hull Enterprises Inc | Broken Arrow, OK 74012 | Oil & Gas Operator | Sep 2023 |
| 2835 | Hull Oil Co. | Wichita Falls, TX 76308 | Oil & Gas Operator | Sep 2021 |
| 2836 | Hulse Steve & Frank | Pawhuska, OK 74056 | Oil & Gas Operator | Aug 2000 |
| 2837 | Hulsey Larry O & Co | Graham, TX 76046 | Oil & Gas Operator | Jun 2012 |
| 2838 | Humphrey Mark | Morris, OK 74445-2816 | Oil & Gas Operator | Sep 2021 |
| 2839 | Hungerford Oil & Gas Inc | Helena, OK 73741 | Oil & Gas Operator | Nov 2000 |
| 2840 | Hunt Brothers Producing Co Inc | Redding, CA 96049-2516 | Oil & Gas Operator | Sep 2012 |
| 2841 | Hunt Chris Water Hauling Contractor Inc | Keyes, OK 73947-0004 | Oil Operator | Jun 2008 |
| 2842 | Hunt Energy Corporation | | Oil & Gas Operator | Feb 2002 |
| 2843 | Hunt Engineering Inc | Norman, OK 73069-4093 | Oil & Gas Operator | Feb 2019 |
| 2844 | Hunt H L | Dallas, TX 75202-2785 | Oil & Gas Operator | Jan 2025 |
| 2845 | Hunt Oil Company | Dallas, TX 75201 | Oil & Gas Operator | Dec 2025 |
| 2846 | Hunt Petroleum Corp. | Dallas, TX 75201 | Oil & Gas Operator | Nov 2008 |
| 2847 | Huntington Energy LLC | Nichols Hill, OK 73116 | Oil & Gas Operator | Dec 2025 |
| 2848 | Huntington Resources Inc | Tulsa, OK 74103 | Oil & Gas Operator | Oct 2006 |
| 2849 | Hunton Oil & Gas Corporation | Oklahoma City, OK 73154-0191 | Oil & Gas Operator | May 2019 |
| 2850 | Hunton Operating LLC | Oklahoma City, OK 73154 | Oil & Gas Operator | Nov 2025 |
| 2851 | Hurd Oil Company | | Oil & Gas Operator | Jun 2015 |
| 2852 | Hurley Charles B | Santa Ana, CA 92706 | Oil & Gas Operator | Apr 2015 |
| 2853 | Hurricane Energy Corporation | | Oil & Gas Operator | Dec 2000 |
| 2854 | Hurst Oil Investments Inc | Oklahoma City, OK 73172 | Oil & Gas Operator | Feb 2015 |
| 2855 | Husky Petroleum | Seminole, OK 74818-1181 | Oil Operator | Feb 2012 |
| 2856 | Husky Ventures Inc | Oklahoma City, OK 73134 | Oil & Gas Operator | Oct 2025 |
| 2857 | Hutton Gas Operating Company | Tulsa, OK 74136 | Oil & Gas Operator | Mar 2015 |
| 2858 | Hux Oil Company LLC | Kingfisher, OK 73750 | Oil & Gas Operator | Nov 2025 |
| 2859 | Hyalite Energy Corporation | Pampa, TX 79066 | Oil & Gas Operator | Oct 2025 |
| 2860 | Hydrocarbon Management, Inc. | San Antonio, TX 78216 | Oil & Gas Operator | Dec 1996 |
| 2861 | Hydrocarbon Technology Services | | Oil & Gas Operator | Dec 2000 |
| 2862 | Hyperion Energy LP | Dallas, TX 75206 | Oil & Gas Operator | May 2014 |
| 2863 | Hyperion Oil & Gas LLC | Dallas, TX 75251 | Oil & Gas Operator | Dec 2025 |
| 2864 | I C Gas Amcana Inc | Tulsa, OK 74103-3713 | Oil & Gas Operator | Apr 1996 |
| 2865 | I D Oil Company Inc | Sperry, OK 74073-9417 | Oil Operator | Jan 2013 |
| 2866 | I T Enterprises Inc | Tulsa, OK 74170-0775 | Oil & Gas Operator | Mar 2011 |
| 2867 | I-Mac Petroleum Service Inc | Bixby, OK 74008-3778 | Oil & Gas Operator | Apr 2020 |
| 2868 | Icon Energy Company | Oklahoma City, OK 73156-1613 | Oil & Gas Operator | Oct 2025 |
| 2869 | Icor Oil & Gas Of Okla LTD | Claremore, OK 74018-2132 | Oil & Gas Operator | Mar 2015 |
| 2870 | Iep Kansas Gas, LLC | Burlington, CO 80807 | Oil & Gas Operator | Nov 2025 |
| 2871 | Igleheart Warren | Edmond, OK 73034-8964 | Oil & Gas Operator | Jun 2016 |
| 2872 | Ike Energy LLC | Stillwater, OK 74074-1745 | Oil & Gas Operator | Nov 2025 |
| 2873 | Ikenberry Herman & Ikenberry | | Oil Operator | Jul 1999 |
| 2874 | Illoma Oil Company Inc | Algonquin, IL 60102-1825 | Oil & Gas Operator | Mar 2015 |
| 2875 | Impact Energy Operating LLC | Oklahoma City, OK 73172 | Oil & Gas Operator | Nov 2025 |
| 2876 | Imperial Petroleum Inc | Evansville, IN 47725 | Oil & Gas Operator | Jan 2005 |
| 2877 | Imperium Energy Inc | Atlanta, TX 75551 | Oil & Gas Operator | Oct 2025 |
| 2878 | Inca Oil Corporation | Oklahoma City, OK 73102 | Oil & Gas Operator | May 2009 |
| 2879 | Incline Production Company | Edmond, OK 73083 | Oil & Gas Operator | Mar 2014 |
| 2880 | Inda Oil Unlimited | Bartlesville, OK 74006 | Oil Operator | Dec 2023 |
| 2881 | Indian Nation Energy Company | Wewoka, OK 74884-3456 | Oil & Gas Operator | Apr 2020 |
| 2882 | Indian Oil Company | Gainesville, TX 76241 | Oil & Gas Operator | Dec 2025 |
| 2883 | Indian Territory Operating LLC | Salado, TX 76571 | Oil & Gas Operator | Jun 2025 |
| 2884 | Indian Wells Oil Co | Oklahoma City, OK 73116 | Oil & Gas Operator | Jan 2000 |
| 2885 | Indianola Oil Inc | Bartlesville, OK 74005 | Oil & Gas Operator | Aug 2000 |
| 2886 | Indrex Inc | Tulsa, OK 74133 | Oil & Gas Operator | Dec 2000 |
| 2887 | Inexco Oil Company | Houston, TX 77210 | Oil & Gas Operator | Mar 2013 |
| 2888 | Infinity Oil & Gas Inc | Nowata, OK 74048 | Oil Operator | Jun 1993 |
| 2889 | Ingersoll Oil Inc | Hominy, OK 74035 | Oil & Gas Operator | Jun 2000 |
| 2890 | Ingersoll Rosinbaum Oil Inc | | Oil & Gas Operator | Oct 2025 |
| 2891 | Ingram Exploration Inc | Seminole, OK 74868 | Oil & Gas Operator | Oct 2025 |
| 2892 | Injection Well Service | Lone Grove, OK 73443-0156 | Oil Operator | Apr 2005 |
| 2893 | Inland Oil Corporation | Sapulpa, OK 74067 | Oil & Gas Operator | Nov 2025 |
| 2894 | Inland Operating Company | Tulsa, OK 74136 | Oil & Gas Operator | Aug 2025 |
| 2895 | Inman Oil LLC | Ruidoso, NM 88355 | Oil Operator | Oct 2025 |
| 2896 | Integrated Energy Service Corp | Cleveland, OK 74020 | Oil & Gas Operator | Nov 1998 |
| 2897 | Inter-States Oil & Gas Inc | Edmond, OK 73003-0023 | Oil & Gas Operator | Apr 2020 |
| 2898 | Intergrated Drill & Expl Inc | Tulsa, OK 74136-1071 | Oil & Gas Operator | Sep 1994 |
| 2899 | Intergy Production LLC | Edmond, OK 73083 | Oil & Gas Operator | Nov 2025 |
| 2900 | International Energy Company LLC | Tulsa, OK 74136-3922 | Oil & Gas Operator | Nov 2025 |