| 2801 | Hydrocarbon Technology Services | | Oil & Gas Operator | Dec 2000 |
| 2802 | Hylmn LLC | | Oil Operator | Jun 2022 |
| 2803 | Hyperion Energy LP | Dallas, TX 75206 | Oil & Gas Operator | May 2014 |
| 2804 | Hyperion Oil & Gas LLC | Dallas, TX 75251 | Oil & Gas Operator | Apr 2024 |
| 2805 | I C Gas Amcana Inc | Tulsa, OK 74103-3713 | Oil & Gas Operator | Apr 1996 |
| 2806 | I D Oil Company Inc | Sperry, OK 74073-9417 | Oil Operator | Jan 2013 |
| 2807 | I T Enterprises Inc | Tulsa, OK 74170-0775 | Oil & Gas Operator | Mar 2011 |
| 2808 | I-Mac Petroleum Service Inc | Bixby, OK 74008-3778 | Oil & Gas Operator | Apr 2020 |
| 2809 | Iacx Energy LLC | Dallas, TX 75240 | Oil & Gas Operator | Mar 2024 |
| 2810 | Icon Energy Company | Oklahoma City, OK 73156-1613 | Oil & Gas Operator | Dec 2023 |
| 2811 | Icor Oil & Gas Of Okla LTD | Claremore, OK 74018-2132 | Oil & Gas Operator | Mar 2015 |
| 2812 | Igleheart Warren | Edmond, OK 73034-8964 | Oil & Gas Operator | Jun 2016 |
| 2813 | Ike Energy LLC | | Oil & Gas Operator | Dec 2023 |
| 2814 | Ikenberry Herman & Ikenberry | | Oil Operator | Jul 1999 |
| 2815 | Illoma Oil Company Inc | Algonquin, IL 60102-1825 | Oil & Gas Operator | Mar 2015 |
| 2816 | Imhoff David | Stroud, OK 74079-9725 | Oil & Gas Operator | Nov 2018 |
| 2817 | Impact Energy Operating LLC | Oklahoma City, OK 73172 | Oil & Gas Operator | Feb 2024 |
| 2818 | Imperial Petroleum, Inc. | Evansville, IN 47725 | Oil & Gas Operator | Jan 2005 |
| 2819 | Inca Oil Corporation | Oklahoma City, OK 73102 | Oil & Gas Operator | May 2009 |
| 2820 | Inda Oil Unlimited | Dewey, OK 74029-2843 | Oil Operator | Dec 2023 |
| 2821 | Indian Nation Energy Company | Wewoka, OK 74884-3456 | Oil & Gas Operator | Apr 2020 |
| 2822 | Indian Oil Company | Gainesville, TX 76241 | Oil & Gas Operator | Apr 2024 |
| 2823 | Indian Territory Operating LLC | | Oil & Gas Operator | Dec 2023 |
| 2824 | Indian Wells Oil Co | Oklahoma City, OK 73116 | Oil & Gas Operator | Jan 2000 |
| 2825 | Indianola Oil Inc | Bartlesville, OK 74005 | Oil & Gas Operator | Aug 2000 |
| 2826 | Indrex Inc | Tulsa, OK 74133 | Oil & Gas Operator | Dec 2000 |
| 2827 | Inexco Oil Company | Houston, TX 77210 | Oil & Gas Operator | Mar 2013 |
| 2828 | Infinity Hydrocarbons LLC | Houston, TX 77079 | Oil & Gas Operator | Aug 2022 |
| 2829 | Infinity Oil & Gas Inc | Nowata, OK 74048 | Oil Operator | Jun 1993 |
| 2830 | Ingersol Rosinbaum Oil Inc | Boerne, TX 78006 | Oil & Gas Operator | Jan 2024 |
| 2831 | Ingersoll Oil Inc | Hominy, OK 74035 | Oil & Gas Operator | Jun 2000 |
| 2832 | Ingram Exploration Inc | Seminole, OK 74818-1626 | Oil & Gas Operator | Jan 2024 |
| 2833 | Injection Well Service | Lone Grove, OK 73443-0156 | Oil Operator | Apr 2005 |
| 2834 | Inland Oil Corporation | Sapulpa, OK 74067-0943 | Oil & Gas Operator | Dec 2023 |
| 2835 | Inland Operating Company | | Oil & Gas Operator | Dec 2023 |
| 2836 | Inman Oil LLC | Ruidoso, NM 88355 | Oil Operator | Dec 2023 |
| 2837 | Integrated Energy Service Corp | Cleveland, OK 74020 | Oil & Gas Operator | Nov 1998 |
| 2838 | Inter-States Oil & Gas Inc | Edmond, OK 73003-0023 | Oil & Gas Operator | Apr 2020 |
| 2839 | Intergrated Drill & Expl Inc | Tulsa, OK 74136-1071 | Oil & Gas Operator | Sep 1994 |
| 2840 | Intergy Production LLC | Edmond, OK 73083-0342 | Oil & Gas Operator | Jan 2024 |
| 2841 | International Energy Company LLC | | Oil & Gas Operator | Dec 2023 |
| 2842 | International Energy Corporation | Tulsa, OK 74136-3922 | Oil & Gas Operator | Dec 2018 |
| 2843 | International Ventures, Inc. | Pogasa Springs, CO 81147 | Oil Operator | Jul 1996 |
| 2844 | Internorth Inc | Tulsa, OK 74136 | Oil & Gas Operator | Apr 2014 |
| 2845 | Interstate Explorations LLC | Houston, TX 77010 | Oil & Gas Operator | Apr 2024 |
| 2846 | Interstate Operating LLC | Tulsa, OK 74101-0535 | Oil & Gas Operator | Aug 2013 |
| 2847 | Investment Equipment LLC | FT Morgan, CO 80701 | Oil & Gas Operator | Jan 2024 |
| 2848 | Investment Operating Co | Stillwater, OK 74075-8572 | Oil Operator | Jan 2024 |
| 2849 | Investors Resources Corp | Enid, OK 73702-1852 | Oil & Gas Operator | Jan 2024 |
| 2850 | Invoil, Inc. | Oklahoma City, OK 73112 | Oil & Gas Operator | Apr 2024 |
| 2851 | Iochem Corporation | Oklahoma City, OK 73118-7483 | Oil & Gas Operator | Jan 2024 |
| 2852 | Ip Petroleum Company, Inc. | Houston, TX 77210 | Oil & Gas Operator | Mar 2008 |
| 2853 | Irex Corporation | Englewood, CO 80111 | Oil & Gas Operator | May 2000 |
| 2854 | Iron Hawk Energy Group Joint Venture | | Oil & Gas Operator | Dec 2023 |
| 2855 | Iron Post Oil & Gas Co Inc | Bristow, OK 74010-4120 | Oil & Gas Operator | Dec 2023 |
| 2856 | Iron Sights Operating Inc | Stillwater, OK 74076 | Oil & Gas Operator | Jul 2022 |
| 2857 | Iron Star Energy LLC | | Oil & Gas Operator | Jan 2024 |
| 2858 | Isaacs Fairy J | Konawa, OK 74849-0134 | Oil Operator | Sep 2020 |
| 2859 | Isaacs-Chupco LLC | | Oil Operator | Mar 2023 |
| 2860 | Itero Energy LLC | Verden, OK 73092 | Oil Operator | Dec 2011 |
| 2861 | Itr Petroleum Inc | Houston, TX 77002 | Oil & Gas Operator | Apr 1998 |
| 2862 | J & E Energy Company | Oklahoma City, OK 73120-1108 | Oil & Gas Operator | Mar 2015 |
| 2863 | J & F Oil & Gas Company | Yale, OK 74085-0311 | Oil & Gas Operator | Feb 2004 |
| 2864 | J & F Oil Co. | Olney, TX 76374 | Oil & Gas Operator | Apr 2024 |
| 2865 | J & J Energy Service LLC | | Gas Operator | Dec 2023 |
| 2866 | J & J Jackson Oil & Gas Inc | Centerview, MO 64019 | Oil Operator | Dec 2023 |
| 2867 | J & J Oil Company | Luling, TX 78648 | Oil & Gas Operator | Mar 2015 |
| 2868 | J & J Oil Company LLC | Lubbock, TX 79424 | Oil Operator | Apr 2024 |
| 2869 | J & J Production Company LLC | Okemah, OK 74859-0561 | Oil & Gas Operator | Jan 2024 |
| 2870 | J & J Tank Truck Services LLC | | Oil Operator | Dec 2023 |
| 2871 | J & K Operating Co LLC | Nowata, OK 74048-0332 | Oil & Gas Operator | Oct 2023 |
| 2872 | J & K Production LLC | Konawa, OK 74849 | Oil Operator | Jan 2024 |
| 2873 | J & L Oil Company | El Dorado, AR 71730 | Oil Operator | Jan 2024 |
| 2874 | J & M Oil Co | Overland PK, KS 66209 | Oil & Gas Operator | Dec 2023 |
| 2875 | J & M Operating Company | Pond Creek, OK 73766 | Oil Operator | Oct 2015 |
| 2876 | J & M Well Service & Trucking Inc | Bristow, OK 74010-2399 | Oil & Gas Operator | Nov 2023 |
| 2877 | J & P Production | Holdenville, OK 74848-9485 | Oil Operator | Mar 2015 |
| 2878 | J & R Enterprises | Wetumka, OK 74883-0068 | Oil & Gas Operator | Sep 2000 |
| 2879 | J & R Transports Inc | Woodward, OK 73802 | Oil & Gas Operator | Dec 2006 |
| 2880 | J & S Gas Company | Ranger, TX 76470 | Oil & Gas Operator | Oct 2003 |
| 2881 | J & S Of Enid Inc | Enid, OK 73702-0389 | Oil & Gas Operator | Jul 2019 |
| 2882 | J & S Oil & Gas Inc | Asher, OK 74826 | Oil & Gas Operator | Jan 2024 |
| 2883 | J & S Oil Company | Graham, TX 76450 | Oil & Gas Operator | Apr 2022 |
| 2884 | J & S Operating | Shiner, TX 77984 | Oil & Gas Operator | Dec 2002 |
| 2885 | J & T Operating Inc | Norman, OK 73070-1736 | Oil & Gas Operator | Feb 2012 |
| 2886 | J & T Resources Inc | Oologah, OK 74053-0249 | Oil Operator | Aug 2013 |
| 2887 | J & Z Investments LLC | | Oil & Gas Operator | Dec 2023 |
| 2888 | J A Marrs Oil Company Inc | Drumright, OK 74030-1157 | Oil & Gas Operator | Jan 2024 |
| 2889 | J B Drilling Company Inc | Muldrow, OK 74948-1917 | Oil & Gas Operator | Dec 2023 |
| 2890 | J B Energy, Inc. | Denton, TX 76206 | Oil & Gas Operator | Aug 2018 |
| 2891 | J B Hulet | | Oil & Gas Operator | Aug 2013 |
| 2892 | J B Tank Trucks Inc | Blackwell, OK 74631-0464 | Oil Operator | Apr 2014 |
| 2893 | J Black Productions LLC | | Oil Operator | Nov 2023 |
| 2894 | J C Petroleum Inc | Chickasha, OK 73023-1433 | Oil & Gas Operator | Dec 2013 |
| 2895 | J D Operating Company | Tulsa, OK 74105 | Oil & Gas Operator | Jun 2005 |
| 2896 | J D Sutton Inc | Loco, OK 73442-9701 | Oil & Gas Operator | Jan 2024 |
| 2897 | J F K G & Associates | Sherman, TX 75091-0758 | Oil Operator | Oct 2008 |
| 2898 | J I Staley Co LLC | | Oil & Gas Operator | Dec 2023 |
| 2899 | J J B Oil & Gas Inc | Mineral Wells, TX 76068 | Oil & Gas Operator | Nov 1996 |
| 2900 | J K Exploration & Production Inc | Fullerton, CA 92832 | Oil & Gas Operator | Apr 2024 |