| 12601 | Hellar Drilling Company, Inc. | Wichita, KS 67208 | Oil & Gas Operator | Jan 2009 |
| 12602 | Hellard Elmer J | Sapulpa, OK 74066 | Oil & Gas Operator | Apr 2026 |
| 12603 | Heller Phillip & Charlene | Columbia, MO 65201 | Oil & Gas Operator | Apr 2026 |
| 12604 | Hellifino Operating, LLC | San Antonio, TX 78212 | Oil Operator | Jun 2026 |
| 12605 | Hellman Properties LLC | | Oil & Gas Operator | Feb 2026 |
| 12606 | Hellums, Harold | Cedar Creek, TX 78612 | Oil & Gas Operator | Mar 2008 |
| 12607 | Helm Energy Company | Tulsa, OK 74133 | Oil Operator | Jan 2026 |
| 12608 | Helmcamp, Inc. | Wichita Falls, TX 76307 | Oil & Gas Operator | Apr 2002 |
| 12609 | Helmco LTD | Kiefer, OK 74041-0397 | Oil & Gas Operator | Jan 2007 |
| 12610 | Helmco Production Company | Pawhuska, OK 74056 | Oil Operator | Aug 2000 |
| 12611 | Helmer Oil Corporation | | Oil & Gas Operator | Apr 2026 |
| 12612 | Helmer, Bonnie J | | Oil Operator | Apr 2026 |
| 12613 | Helmerich & Payn | | Oil & Gas Operator | Aug 1995 |
| 12614 | Helmerich & Payne, Inc. | Tulsa, OK 74114 | Oil & Gas Operator | Feb 2026 |
| 12615 | Helmhold Oil Incorporated | Wellsville, NY 14895 | Oil Operator | Dec 2024 |
| 12616 | Helms Oil | Brinkhaven, OH 43006 | Oil Operator | Dec 2018 |
| 12617 | Helms Oil & Gas, LLC | Midland, TX 79710 | Oil & Gas Operator | Jun 2026 |
| 12618 | Helo Energy, Inc. | Borger, TX 79008 | Oil & Gas Operator | Aug 2001 |
| 12619 | Helsel, Allan J | South Haven, KS 67140 | Oil Operator | Feb 2026 |
| 12620 | Helton Oil Company | Edmond, OK 73083-7283 | Oil & Gas Operator | Aug 2016 |
| 12621 | Helton Petroleum | Pampa, TX 79066 | Oil & Gas Operator | Jun 2026 |
| 12622 | Helton, Pat A. & Alberta | Allison, TX 79003 | Oil & Gas Operator | Jun 2026 |
| 12623 | Hembree Alva | Oklahoma City, OK 73151-9145 | Oil & Gas Operator | Jun 2016 |
| 12624 | Hembree Brit W | Shawnee, OK 74802-1725 | Oil & Gas Operator | Mar 2026 |
| 12625 | Hembree Oil Production, LLC | Great Bend, KS 67530 | Oil Operator | Feb 2026 |
| 12626 | Hembree Robert F | | Oil Operator | Dec 2009 |
| 12627 | Hemco Development, LLC | Dallas, TX 75201 | Oil & Gas Operator | Nov 2020 |
| 12628 | Hemco Production, L. L. C. | Dallas, TX 75201 | Oil & Gas Operator | Apr 2016 |
| 12629 | Hemstead Oil Corporation | Oklahoma City, OK 73102 | Oil & Gas Operator | May 2001 |
| 12630 | Hemus, Inc. | Bellaire, TX 77401 | Oil & Gas Operator | Sep 1994 |
| 12631 | Henderson & Erickson, Inc. | Midland, TX 79701 | Oil & Gas Operator | Jun 2026 |
| 12632 | Henderson Charles E | Bokoshe, OK 74930 | Gas Operator | Apr 2026 |
| 12633 | Henderson Don Inc | Oklahoma City, OK 73134-1753 | Oil & Gas Operator | Aug 2013 |
| 12634 | Henderson Exploration Company | Tulsa, OK 74120 | Oil & Gas Operator | May 2013 |
| 12635 | Henderson Fred J | Okmulgee, OK 74447 | Oil & Gas Operator | Mar 2026 |
| 12636 | Henderson Natural Res, L.L.C. | Crozet, VA 22932 | Oil & Gas Operator | Jun 2026 |
| 12637 | Henderson Oil & Gas | | Oil Operator | Sep 1990 |
| 12638 | Henderson Pet Corp Of Delaware | | Oil & Gas Operator | Oct 2019 |
| 12639 | Henderson Petroleum Corp | San Angelo, TX 76906 | Oil & Gas Operator | Jul 2013 |
| 12640 | Henderson, Bryan, Co. | Dallas, TX 75225 | Oil & Gas Operator | Jun 2026 |
| 12641 | Henderson, Chris | Pawhuska, OK 74056 | Oil Operator | Dec 2009 |
| 12642 | Henderson, Peter Oil Co. | San Angelo, TX 76906 | Oil & Gas Operator | Feb 2020 |
| 12643 | Henderson, Sam F. | Odessa, TX 79760 | Oil & Gas Operator | Nov 2002 |
| 12644 | Henderson, Sam W. | Iowa Park, TX 76367 | Oil & Gas Operator | Jun 2019 |
| 12645 | Hendrickson Lester | Delaware, OK 74027-9715 | Oil Operator | Mar 2015 |
| 12646 | Hendrickson W R | Beggs, OK 74421-2936 | Oil & Gas Operator | Jun 2023 |
| 12647 | Hendrix, John H. Corporation | Midland, TX 79705 | Oil & Gas Operator | Sep 2018 |
| 12648 | Hendry Energy Services | | Oil Operator | Dec 2024 |
| 12649 | Henergy Oil & Gas LLC | | Oil Operator | Jan 2025 |
| 12650 | Henley Operating | Nocona, TX 76255 | Oil & Gas Operator | Jun 2026 |
| 12651 | Henley, VIola F | | Oil Operator | Apr 2026 |
| 12652 | Hennan Resources, Inc. | Great Neck, NY 11021 | Gas Operator | Nov 1997 |
| 12653 | Hennessey Oil & Gas LLC | Hennessey, OK 73742-0212 | Oil & Gas Operator | Sep 2024 |
| 12654 | Hennessy Oil Com | | Oil Operator | Mar 1991 |
| 12655 | Hennig Production Co., Inc. | Tyler, TX 75701 | Oil & Gas Operator | Jun 2026 |
| 12656 | Henrich, Adam Gabriel | Eden, NY 14057 | Gas Operator | Dec 2024 |
| 12657 | Henrich, John W. | Eden, NY 14057 | Gas Operator | Dec 2024 |
| 12658 | Henry And Jane Fong | | Oil Operator | Dec 1989 |
| 12659 | Henry Billy Or Connie | Okemah, OK 74859-6075 | Oil & Gas Operator | Jul 2021 |
| 12660 | Henry Gungoll Operating Inc | Enid, OK 73703 | Oil & Gas Operator | Mar 2026 |
| 12661 | Henry Oil & Gas Inc | Oklahoma City, OK 73127 | Oil & Gas Operator | Jul 2009 |
| 12662 | Henry Patrick K | | Oil & Gas Operator | Dec 2025 |
| 12663 | Henry Paul Petroleum, LLC | Pampa, TX 79066 | Oil & Gas Operator | Jun 2026 |
| 12664 | Henry Petroleum Corp. | Midland, TX 79703 | Oil & Gas Operator | Mar 2001 |
| 12665 | Henry Petroleum Inc | Oklahoma City, OK 73162-1757 | Oil & Gas Operator | Sep 2019 |
| 12666 | Henry Petroleum LLC | Flower Mound, TX 75028 | Oil & Gas Operator | Jun 2026 |
| 12667 | Henry Petroleum LP | Midland, TX 79701 | Oil & Gas Operator | Dec 2008 |
| 12668 | Henry Petroleum Of Oklahoma LP | Midland, TX 79703-5000 | Oil & Gas Operator | Feb 2017 |
| 12669 | Henry Production Company, Inc. | Lafayette, LA 70505 | Oil & Gas Operator | Oct 2019 |
| 12670 | Henry Rennick | | Oil Operator | Apr 2026 |
| 12671 | Henry Resources LLC | Midland, TX 79703 | Oil & Gas Operator | Jun 2026 |
| 12672 | Henry Sappington Machine & Tool Dba Henry Sappingt | | Oil Operator | Oct 2017 |
| 12673 | Henry W. Agle And Sons, Inc. | Eden, NY 14057 | Gas Operator | Dec 2024 |
| 12674 | Henry Wat Oil Company | Tulsa, OK 74101 | Oil Operator | Jan 2014 |
| 12675 | Henry, J.R. Inc | Brenham, TX 77833 | Oil & Gas Operator | Jun 2026 |
| 12676 | Henry, John Petroleum | Dallas, TX 75225 | Oil & Gas Operator | Dec 2001 |
| 12677 | Henscheid, Rufus | Muenster, TX 76252 | Oil Operator | Jan 2020 |
| 12678 | Hensley Oil Company LLC | Arkansas City, KS 67005 | Oil Operator | Feb 2026 |
| 12679 | Hensley, Cloide J. & Hazel M. | Arkansas City, KS 67005 | Oil Operator | Sep 2001 |
| 12680 | Henson Doyle | Okmulgee, OK 74447-4841 | Oil & Gas Operator | Jun 2020 |
| 12681 | Henson Exploration, L.P. | Abilene, TX 79608 | Oil & Gas Operator | Jun 2026 |
| 12682 | Henson Terry Dba Daycon Exploration | Tulsa, OK 74133 | Oil & Gas Operator | Mar 2026 |
| 12683 | Hep Oil Company, LTD. | Gainesville, TX 76240 | Oil & Gas Operator | Mar 2012 |
| 12684 | Hep Oil GP, LLC | Gainesville, TX 76241 | Oil & Gas Operator | Mar 2015 |
| 12685 | Herald Oil & Gas Co | Middleport, OH 45760-9000 | Oil & Gas Operator | Dec 2010 |
| 12686 | Herbaly Petroleum Corp | FT Worth, TX 76102 | Oil & Gas Operator | Feb 2002 |
| 12687 | Herber, Carl R. | Denton, TX 76205 | Oil & Gas Operator | Apr 2014 |
| 12688 | Herbert J. Schmitz | | Oil & Gas Operator | Dec 1987 |
| 12689 | Herbig Oil & Gas Co. | Midland, TX 79705 | Oil & Gas Operator | Jun 2026 |
| 12690 | Herbig, J F | Midland, TX 79701 | Oil & Gas Operator | Mar 1998 |
| 12691 | Herbst Resources, Inc. | Mandeville, LA 70448 | Oil & Gas Operator | Aug 2003 |
| 12692 | Herd Producing Company, Inc. | Tyler, TX 75711 | Oil & Gas Operator | Jun 2026 |
| 12693 | Hereford, J. A. Industries, Inc. | Nacogdoches, TX 75961 | Oil & Gas Operator | Jun 2026 |
| 12694 | Herencia Operating LLC | Wichita Falls, TX 76301 | Oil & Gas Operator | Jun 2026 |
| 12695 | Heritage Energy Company | | Oil & Gas Operator | Jun 2001 |
| 12696 | Heritage Energy Corporation | Waco, TX 76710 | Oil & Gas Operator | Sep 2004 |
| 12697 | Heritage Expl. & Prod. Co., Inc. | Stafford, TX 77497 | Oil & Gas Operator | Dec 2000 |
| 12698 | Heritage Exploration LLC | Oklahoma City, OK 73120-5622 | Oil & Gas Operator | Jan 2020 |
| 12699 | Heritage Oil Company Inc | Norman, OK 73070 | Oil & Gas Operator | Jul 2008 |
| 12700 | Heritage Oil L.L.C. | Hays, KS 67601 | Oil Operator | Feb 2026 |