| 12601 | Hair, Roger D. | Post, TX 79356 | Oil & Gas Operator | Apr 2025 |
| 12602 | Haischer James W Dba Haischer James W And Assoc | | Oil & Gas Operator | Dec 2001 |
| 12603 | Hal J Rasmussen Oper Inc | Midland, TX 79702 | Oil & Gas Operator | Dec 2014 |
| 12604 | Hal Oil & Gas Co., Inc. | | Oil & Gas Operator | Apr 1993 |
| 12605 | Haland Operating Company, LLC | | Oil & Gas Operator | Jul 2018 |
| 12606 | Halbouty, Michel T. | Houston, TX 77056 | Oil & Gas Operator | Aug 1997 |
| 12607 | Halbouty-Reserve | | Oil & Gas Operator | Sep 1987 |
| 12608 | Halbouty-Reserve-Pel-Tex | | Oil & Gas Operator | May 1985 |
| 12609 | Halcon Holdings Inc | Ada, OK 74820 | Oil & Gas Operator | Nov 2018 |
| 12610 | Halcon Louisiana Operating, LP | | Oil & Gas Operator | Sep 2017 |
| 12611 | Halcon Operating Co., Inc. | Houston, TX 77024 | Oil & Gas Operator | Apr 2025 |
| 12612 | Halcon Opr Co Inc | Houston, TX 77002-5005 | Oil & Gas Operator | Jul 2017 |
| 12613 | Halcon Resources Operating, Inc. | Tulsa, OK 74135 | Oil & Gas Operator | Dec 2013 |
| 12614 | Halcyon Natural Gas LLC | Oklahoma City, OK 73116-9111 | Oil & Gas Operator | Jan 2025 |
| 12615 | Halde Oil Inc | | Oil & Gas Operator | Jan 2025 |
| 12616 | Hale John H | Tulsa, OK 74107 | Oil & Gas Operator | Mar 2000 |
| 12617 | Hale Oil | | Oil & Gas Operator | Dec 2024 |
| 12618 | Hale Oil & Gas Properties | Graham, TX 76450 | Oil & Gas Operator | Jul 1997 |
| 12619 | Hale Oil Co. | | Oil & Gas Operator | Jan 2025 |
| 12620 | Hale, L.D. | Wichita, KS 67230 | Oil Operator | Oct 2019 |
| 12621 | Hale, Mike E. | Georgetown, TX 78628 | Oil & Gas Operator | Dec 2003 |
| 12622 | Halek Energy L.L.C. | Dallas, TX 75201 | Oil & Gas Operator | Jan 2014 |
| 12623 | Halex Inc | | Oil & Gas Operator | Nov 1988 |
| 12624 | Halex Oil Corporation | Houston, TX 77057 | Oil & Gas Operator | Apr 2025 |
| 12625 | Haley/Hughes Operations | | Oil Operator | Apr 2001 |
| 12626 | Halfway Oil Inc | Tahlequah, OK 74464-5448 | Oil & Gas Operator | Aug 2013 |
| 12627 | Halgas Inc | Tulsa, OK 74101-3012 | Oil & Gas Operator | May 2013 |
| 12628 | Hall & Horning Serv Inc | Atwater, OH 44201-9375-9375 | Oil & Gas Operator | Dec 2009 |
| 12629 | Hall And Kelley Oil & Gas | | Oil Operator | Dec 1995 |
| 12630 | Hall Drilling LLC (Oil & Gas) | Ellenboro, WV 26346 | Gas Operator | Sep 2014 |
| 12631 | Hall Drilling, LLC | Ellenboro, WV 26346 | Oil & Gas Operator | Dec 2021 |
| 12632 | Hall Edward L | Ada, OK 74820-3321 | Oil & Gas Operator | Jan 2025 |
| 12633 | Hall Energy Co. | Oklahoma City, OK 73102 | Oil & Gas Operator | Sep 2016 |
| 12634 | Hall Energy Company LLC | Oklahoma City, OK 73120-5020 | Oil & Gas Operator | Jul 2022 |
| 12635 | Hall Energy Inc | Magnetic Spring, OH 43036-218-218 | Oil & Gas Operator | Dec 2017 |
| 12636 | Hall Engineering, Inc. | | Oil & Gas Operator | Jan 2007 |
| 12637 | Hall Exploration, Inc. | Fort Worth, TX 76102 | Oil & Gas Operator | Jan 2025 |
| 12638 | Hall Farm Leasing, LLC | | Oil Operator | Dec 2012 |
| 12639 | Hall IVan & Assoc Inc | Berea, OH 44017 | Oil & Gas Operator | Dec 1997 |
| 12640 | Hall Oil & Gas | Coahoma, TX 79511 | Oil & Gas Operator | Apr 2025 |
| 12641 | Hall Oil And Gas LLC | Midland, TX 79707 | Oil & Gas Operator | Apr 2025 |
| 12642 | Hall Oil Company | Humboldt, KS 66748 | Oil Operator | Nov 2009 |
| 12643 | Hall Resources Corporation | Independence, MO 64057-2158 | Oil & Gas Operator | Jun 2016 |
| 12644 | Hall Richard A | | Oil Operator | Sep 1993 |
| 12645 | Hall Thomas E | Marietta, OH 45750 | Oil & Gas Operator | Dec 2021 |
| 12646 | Hall, D. Corporation | La Grange, TX 78945 | Oil & Gas Operator | Mar 2013 |
| 12647 | Hall, E. G., Oil Co. | Mexia, TX 76667 | Oil & Gas Operator | Apr 2025 |
| 12648 | Hall, J.J. Operating Co., Inc. | Lakewood, CO 80215 | Oil Operator | Jan 2005 |
| 12649 | Hall, James H ( Trust) | | Gas Operator | Dec 2007 |
| 12650 | Hall, Michael Wayne | Toronto, KS 66777 | Oil Operator | Dec 2009 |
| 12651 | Hall-Hargraves, L.L.C. | | Oil & Gas Operator | Dec 2024 |
| 12652 | Hall-Houston Expl. II, L.P. | Houston, TX 77027 | Oil & Gas Operator | Apr 2025 |
| 12653 | Hall-Houston Expl. III, L.P. | Houston, TX 77027 | Oil & Gas Operator | Jul 2013 |
| 12654 | Hall-Houston Oil Company | Houston, TX 77002 | Oil & Gas Operator | Oct 2002 |
| 12655 | Hallador Petroleum Company | | Oil & Gas Operator | Feb 1992 |
| 12656 | Hallador Petroleum LLP | Denver, CO 80264 | Oil & Gas Operator | Feb 2019 |
| 12657 | Hallar Enterprises, Inc. | | Oil Operator | Oct 2007 |
| 12658 | Hallco Petroleum Inc | Oklahoma City, OK 73106-5224 | Oil Operator | Aug 2018 |
| 12659 | Halliburton Oil | | Oil & Gas Operator | Sep 2008 |
| 12660 | Halliburton Oil Producing Co. | Duncan, OK 73534 | Oil & Gas Operator | Apr 2016 |
| 12661 | Halliburton Operating Company | Plano, TX 75093 | Oil & Gas Operator | Apr 2025 |
| 12662 | Hallmark Oil And Gas Co., Inc. | | Oil & Gas Operator | Dec 2024 |
| 12663 | Hallmark Resources, Inc | Stilwell, OK 74960-0312 | Oil & Gas Operator | Sep 2020 |
| 12664 | Hallum Construction Inc | Seminole, OK 74868-2427 | Oil & Gas Operator | Sep 2014 |
| 12665 | Hallwell Gas & Oil Co. | | Oil & Gas Operator | Sep 1985 |
| 12666 | Hallwood Energy Corporation | Oklahoma City, OK 73154 | Oil & Gas Operator | Feb 2005 |
| 12667 | Hallwood Petrole | | Oil & Gas Operator | Apr 1999 |
| 12668 | Hallwood Petroleum | Denver, CO 80237 | Oil & Gas Operator | Dec 1997 |
| 12669 | Hallwood Petroleum, Inc. | Midland, TX 79701 | Oil & Gas Operator | Aug 2024 |
| 12670 | Hallwood Petroleum, LLC | Dallas, TX 75219 | Oil & Gas Operator | Jan 2010 |
| 12671 | Halo Energy L.L.C. | Kilgore, TX 75662 | Oil Operator | Apr 2025 |
| 12672 | Halter Ralph P | Robertsville, OH 44670 | Oil Operator | Dec 1999 |
| 12673 | Halvey Energy Co. | Midland, TX 79702 | Oil & Gas Operator | Oct 2004 |
| 12674 | Halvey Energy, LLC | Midland, TX 79702 | Oil & Gas Operator | Apr 2025 |
| 12675 | Ham Oil & Gas, Inc. | Big Lake, TX 76932 | Oil & Gas Operator | Feb 2000 |
| 12676 | Ham Oil Company, LLC | | Oil Operator | Sep 2022 |
| 12677 | Hamblin Ralph Inc | MT Vernon, OH 43050 | Oil & Gas Operator | Dec 1991 |
| 12678 | Hamby Oil LLC | Ellinwood, KS 67526 | Oil Operator | May 2013 |
| 12679 | Hamil Oil & Gas LLC | Kingfisher, OK 73750-6500 | Oil & Gas Operator | Jan 2025 |
| 12680 | Hamill Resources, Inc. | Houston, TX 77002 | Oil & Gas Operator | Apr 1999 |
| 12681 | Hamill, Claud B. Estate Of | Houston, TX 77002 | Oil & Gas Operator | Nov 1995 |
| 12682 | Hamill, Flora Oil Co. | Levelland, TX 79336 | Oil & Gas Operator | Apr 2025 |
| 12683 | Hamilton B J | Ada, OK 74820-9404 | Oil & Gas Operator | Sep 1999 |
| 12684 | Hamilton Brother | | Gas Operator | May 1993 |
| 12685 | Hamilton Brothers | Plainview, TX 79073 | Oil & Gas Operator | Mar 2008 |
| 12686 | Hamilton Brothers Oil Co. | Houston, TX 77057 | Oil & Gas Operator | Mar 2015 |
| 12687 | Hamilton K M Oil & Gas Co | Ada, OK 74820 | Oil Operator | Jan 2013 |
| 12688 | Hamilton Leonard O | Marietta, OH 45750 | Oil & Gas Operator | Dec 2023 |
| 12689 | Hamilton, Clay | Carrizo SPGS, TX 78834 | Oil & Gas Operator | Apr 2025 |
| 12690 | Hamilton, Eddy R. | Breckenridge, TX 76424 | Oil & Gas Operator | Apr 2025 |
| 12691 | Hamilton, J. R. | Carrizo SPGS, TX 78834 | Oil & Gas Operator | Apr 2025 |
| 12692 | Hamilton, John M. | Wichita Falls, TX 76301 | Oil & Gas Operator | May 2001 |
| 12693 | Hamilton, W. B., Estate | Wichita Falls, TX 76301 | Oil & Gas Operator | Mar 2004 |
| 12694 | Hamilton-Tedford Oper. Co., LLC | Wichita Falls, TX 76301 | Oil Operator | May 2007 |
| 12695 | Hamlin Oil Opera | | Oil Operator | May 1988 |
| 12696 | Hamm N R Contrac | | Oil & Gas Operator | Jun 1989 |
| 12697 | Hamm, Richard | Monahans, TX 79756 | Oil & Gas Operator | Mar 1994 |
| 12698 | Hamm, Richard Inc. | Monahans, TX 79756 | Oil & Gas Operator | Apr 2025 |
| 12699 | Hamman Oil & Refining Company | Houston, TX 77098 | Oil & Gas Operator | Apr 2025 |
| 12700 | Hamman, Blake | Graham, TX 76450 | Oil & Gas Operator | Jul 2020 |