| 2601 | H2ok LLC | Marble Falls, TX 78654 | Oil & Gas Operator | Feb 2025 |
| 2602 | H2ox Operating LLC | Tulsa, OK 74103 | Oil Operator | Feb 2025 |
| 2603 | Haas Petroleum, LLC | Prairie VIllage, KS 66208 | Oil Operator | Dec 2024 |
| 2604 | Hadaway Consulting And Engineering LLC | Canadian, TX 79014 | Oil & Gas Operator | Jun 2024 |
| 2605 | Hadaway Engineering Inc | Canadian, TX 79014 | Oil & Gas Operator | Jul 2015 |
| 2606 | Hadco LTD | Ardmore, OK 73401-6929 | Oil & Gas Operator | Mar 2015 |
| 2607 | Haddox Johnny C | Okemah, OK 74859-0254 | Oil Operator | Apr 2020 |
| 2608 | Hadson Petro USA Inc | | Oil & Gas Operator | Nov 2016 |
| 2609 | Hadson Petroleum Corporation | Oklahoma City, OK 73102 | Oil & Gas Operator | Mar 2015 |
| 2610 | Hagler William N | Farmington, NM 87499-0035 | Oil Operator | Apr 2014 |
| 2611 | Hail Petroleum Corporation | Garland, TX 75047-5036 | Oil Operator | Mar 1997 |
| 2612 | Hailey Energy Corporation | Wesson, MS 39191 | Gas Operator | May 2013 |
| 2613 | Haines Oil Company | Sulphur, OK 73086 | Oil & Gas Operator | Oct 2009 |
| 2614 | Halcon Holdings Inc | Ada, OK 74820 | Oil & Gas Operator | Nov 2018 |
| 2615 | Halcyon Natural Gas LLC | Oklahoma City, OK 73116-9111 | Oil & Gas Operator | Jan 2025 |
| 2616 | Hale John H | Tulsa, OK 74107 | Oil & Gas Operator | Mar 2000 |
| 2617 | Halfway Oil Inc | Tahlequah, OK 74464-5448 | Oil & Gas Operator | Aug 2013 |
| 2618 | Halgas Inc | Tulsa, OK 74101-3012 | Oil & Gas Operator | May 2013 |
| 2619 | Hall And Kelley Oil & Gas | | Oil Operator | Dec 1995 |
| 2620 | Hall Edward L | Ada, OK 74820-3321 | Oil & Gas Operator | Jan 2025 |
| 2621 | Hall Energy Company LLC | Oklahoma City, OK 73120-5020 | Oil & Gas Operator | Jul 2022 |
| 2622 | Hall Exploration, Inc. | Fort Worth, TX 76102 | Oil & Gas Operator | Jan 2025 |
| 2623 | Hall Resources Corporation | Independence, MO 64057-2158 | Oil & Gas Operator | Jun 2016 |
| 2624 | Hallco Petroleum Inc | Oklahoma City, OK 73106-5224 | Oil Operator | Aug 2018 |
| 2625 | Halliburton Oil Producing Co. | Duncan, OK 73534 | Oil & Gas Operator | Apr 2016 |
| 2626 | Hallmark Resources, Inc | Stilwell, OK 74960-0312 | Oil & Gas Operator | Sep 2020 |
| 2627 | Hallum Construction Inc | Seminole, OK 74868-2427 | Oil & Gas Operator | Sep 2014 |
| 2628 | Hallwood Petroleum, Inc. | Midland, TX 79701 | Oil & Gas Operator | Aug 2024 |
| 2629 | Ham Oil Company, LLC | | Oil Operator | Sep 2022 |
| 2630 | Hamil Oil & Gas LLC | Kingfisher, OK 73750-6500 | Oil & Gas Operator | Jan 2025 |
| 2631 | Hamilton B J | Ada, OK 74820-9404 | Oil & Gas Operator | Sep 1999 |
| 2632 | Hamilton Brothers Oil Co. | Houston, TX 77057 | Oil & Gas Operator | Mar 2015 |
| 2633 | Hamilton K M Oil & Gas Co | Ada, OK 74820 | Oil Operator | Jan 2013 |
| 2634 | Hammer Oil Properties Inc | Enid, OK 73706-0144 | Oil & Gas Operator | Oct 2017 |
| 2635 | Hammer Ranch | Elmore City, OK 73433 | Oil & Gas Operator | Jan 2023 |
| 2636 | Hamon Jake L | Dallas, TX 75201-3902 | Oil & Gas Operator | Nov 1997 |
| 2637 | Hamon Operating Company | Dallas, TX 75201 | Oil & Gas Operator | Dec 2011 |
| 2638 | Hamp Oil | Ponca City, OK 74604 | Oil & Gas Operator | Sep 2002 |
| 2639 | Hampton Corporation (The) | Norman, OK 73069-5910 | Oil Operator | Jun 2016 |
| 2640 | Hancock Leon | Kingston, OK 73439-9618 | Oil Operator | Dec 2014 |
| 2641 | Hanna Oil And Gas Company | Fort Smith, AR 72901 | Oil & Gas Operator | Jan 2025 |
| 2642 | Hanoco Inc | Tulsa, OK 74135 | Oil & Gas Operator | Jan 2025 |
| 2643 | Hanover Operating Company | Tulsa, OK 74101 | Oil & Gas Operator | Dec 1998 |
| 2644 | Hansen Noel | Avant, OK 74001 | Oil Operator | Aug 2013 |
| 2645 | Happy Hill Operating LLC | Guthrie, OK 73044-7361 | Oil & Gas Operator | Oct 2017 |
| 2646 | Har-Ken Oil Co | | Oil & Gas Operator | Dec 2021 |
| 2647 | Harbert Energy Corp | Irving, TX 75015-2510 | Oil & Gas Operator | Feb 1993 |
| 2648 | Harbon Oil Company LLC | Yale, OK 74085 | Oil Operator | Jan 2025 |
| 2649 | Harbor Resources LLC | Oklahoma City, OK 73120 | Oil & Gas Operator | Apr 2025 |
| 2650 | Hard Rock Operating, LLC | Pawhuska, OK 74056 | Oil & Gas Operator | May 2022 |
| 2651 | Harden Operating Company Inc | Tulsa, OK 74106-2722 | Oil & Gas Operator | Sep 2006 |
| 2652 | Hardin Productions | Okemah, OK 74859 | Oil & Gas Operator | Dec 2006 |
| 2653 | Harding & Shelton Inc | Oklahoma City, OK 73104-2410 | Oil & Gas Operator | Jan 2025 |
| 2654 | Harding And Shelton Exploration LLC | Oklahoma City, OK 73101-1557 | Oil & Gas Operator | Jan 2025 |
| 2655 | Harding Exploration, Inc. | Wichita Falls, TX 76308 | Oil & Gas Operator | Dec 2016 |
| 2656 | Hardwick Oil Company | Sugar Land, TX 77478 | Oil & Gas Operator | Nov 2014 |
| 2657 | Hargraves Elston | Ponca City, OK 74604 | Oil & Gas Operator | Jul 2003 |
| 2658 | Hargus Curtis | Macomb, OK 74852-8508 | Oil Operator | May 2017 |
| 2659 | Hargus Irrevocable Trust | Tecumseh, OK 74873-0590 | Oil Operator | Apr 2014 |
| 2660 | Harken Exploration Company | Houston, TX 77079 | Oil & Gas Operator | Mar 2008 |
| 2661 | Harlow Corporation, The | Amarillo, TX 79101 | Oil & Gas Operator | Apr 2014 |
| 2662 | Harold Enterprises Inc | Kellyville, OK 74039-0441 | Oil & Gas Operator | Jan 2018 |
| 2663 | Harold G Raper Family Trust | Mansfield, TX 76063-1667 | Oil Operator | May 2023 |
| 2664 | Harold M Root Foundation | | Oil Operator | Jan 2025 |
| 2665 | Harp Peggy A | Seminole, OK 74868-2284 | Oil & Gas Operator | Mar 2024 |
| 2666 | Harper Joe Howard Dba J H Field Service | Nowata, OK 74048-9704 | Oil & Gas Operator | Dec 2024 |
| 2667 | Harrell Petroleum Inc | Oklahoma City, OK 73102-7201 | Oil & Gas Operator | Oct 2017 |
| 2668 | Harrell Verlan W | Oklahoma City, OK 73102-7201 | Oil & Gas Operator | Nov 1999 |
| 2669 | Harrington Billy B | Depew, OK 74028-3495 | Oil & Gas Operator | May 2006 |
| 2670 | Harrington Orville | Dewey, OK 74029-4504 | Oil Operator | Jan 2025 |
| 2671 | Harrington SR Tommy W | Drumright, OK 74030-5778 | Oil Operator | May 2015 |
| 2672 | Harris B D | Norman, OK 73071-4802 | Oil & Gas Operator | Apr 2014 |
| 2673 | Harris Mildred C | Tulsa, OK 74120 | Oil & Gas Operator | Dec 2024 |
| 2674 | Harris Minerals Corp (The) | Oklahoma City, OK 73162-1045 | Oil & Gas Operator | Jan 2025 |
| 2675 | Harris Oil & Gas Company | Denver, CO 80202 | Oil & Gas Operator | Jun 2016 |
| 2676 | Harris Olin | Okmulgee, OK 74447-8508 | Oil Operator | Feb 2012 |
| 2677 | Harrison Oil | Lindsay, OK 73052 | Oil & Gas Operator | Nov 2014 |
| 2678 | Harrison Oil & Gas Inc | Houston, TX 77019 | Oil & Gas Operator | Jan 2025 |
| 2679 | Harrison-Wright Oil Company LLC | Tulsa, OK 74133-7035 | Oil & Gas Operator | Jan 2025 |
| 2680 | Harrod Leasing | Edmond, OK 73034 | Oil & Gas Operator | Jan 2025 |
| 2681 | Hart David | Chickasha, OK 73018-7756 | Oil & Gas Operator | Mar 2015 |
| 2682 | Harter Energy Inc. | Tulsa, OK 74105 | Oil & Gas Operator | Dec 2024 |
| 2683 | Hartline Tom | Drumright, OK 74030 | Oil Operator | Jan 2025 |
| 2684 | Hartman Oil Company Inc | Wichita, KS 67206 | Oil & Gas Operator | Dec 2024 |
| 2685 | Harvey A B | Seminole, OK 74868-1724 | Oil Operator | Mar 2015 |
| 2686 | Harwood Oil & Gas Inc | Greeley, CO 80631-8233 | Oil & Gas Operator | Jan 2025 |
| 2687 | Hat-Top Production Co | Duncan, OK 73533 | Oil Operator | Apr 2011 |
| 2688 | Haught Harold | Hominy, OK 74035 | Oil Operator | Feb 2012 |
| 2689 | Hawkins & Hawkins | Council Hill, OK 74428 | Oil & Gas Operator | Jul 1996 |
| 2690 | Hawkins & Son Inc | Boynton, OK 74422 | Oil & Gas Operator | Aug 2019 |
| 2691 | Hawkins Oil & Gas Inc | Tulsa, OK 74103 | Oil & Gas Operator | Dec 2016 |
| 2692 | Hawthorne Carl A | Mounds, OK 74047-4936 | Oil & Gas Operator | Apr 2015 |
| 2693 | Haydens Oil And Gas LLC | Dover, OK 73734 | Oil & Gas Operator | Jan 2025 |
| 2694 | Hayes & Hudson | Bartlesville, OK 74003 | Oil & Gas Operator | Jan 2025 |
| 2695 | Haynes Jim L & Betty L | Haskell, OK 74436-8803 | Oil & Gas Operator | Dec 2013 |
| 2696 | Hays Herb E & K S | Bartlesville, OK 74006 | Oil Operator | Dec 2024 |
| 2697 | Hays Operating Company | Oklahoma City, OK 73102 | Oil & Gas Operator | Mar 2000 |
| 2698 | Hays Production LLC | Velma, OK 73491 | Oil & Gas Operator | Feb 2025 |
| 2699 | Hays Stanley L | Wynola, OK 74084 | Oil Operator | May 2022 |
| 2700 | Hazelwood Louis J | Albuquerque, NM 87111-6870 | Oil & Gas Operator | Feb 2023 |