| 12601 | HB Energy LLC | Wellsville, KS 66092 | Oil Operator | May 2026 |
| 12602 | HB Oil Company | Abilene, TX 79602 | Oil & Gas Operator | Jun 2023 |
| 12603 | HB Oil, LLC | Sunburst, MT 59482 | Oil Operator | Jun 2026 |
| 12604 | HBC Oil Company, LLC | San Antonio, TX 78266 | Oil Operator | Sep 2026 |
| 12605 | HC Resources, Inc. | | Oil & Gas Operator | Jul 2011 |
| 12606 | Hce Operating LLC | Smyer, TX 79367 | Oil & Gas Operator | Sep 2026 |
| 12607 | HCG Energy Corporation & Subs | | Oil & Gas Operator | Mar 2015 |
| 12608 | HCL Inc | Woodward, OK 73802-1074 | Oil Operator | Mar 2015 |
| 12609 | HCM | Dallas, TX 75206 | Oil & Gas Operator | Mar 2015 |
| 12610 | HCW Exploration, Inc. | | Oil & Gas Operator | Jun 1986 |
| 12611 | HD Operating Co, LLC | Kilgore, TX 75663 | Oil & Gas Operator | Sep 2026 |
| 12612 | HD Special-Situations, LP | San Francisco, CA 94111 | Oil & Gas Operator | Feb 2014 |
| 12613 | HD Well Services LLC | Wellsville, KS 66092 | Oil Operator | Apr 2026 |
| 12614 | HDH Resources, Inc. | Wilmore, KS 67155 | Oil & Gas Operator | Oct 2025 |
| 12615 | HDS Production | | Oil Operator | Mar 1998 |
| 12616 | HDT Inc. | | Oil & Gas Operator | Jul 2026 |
| 12617 | Headington Canada Corp. | Dallas, TX 75231 | Gas Operator | Jun 2000 |
| 12618 | Headington Energy Corporation | Dallas, TX 75231 | Oil & Gas Operator | Aug 1992 |
| 12619 | Headington Energy Partners, LLC | Corpus Christ, TX 78401 | Oil & Gas Operator | Sep 2026 |
| 12620 | Headington Oil Company | Dallas, TX 75231 | Oil & Gas Operator | Dec 2016 |
| 12621 | Headington Oil Company LLC | Dallas, TX 75204 | Oil & Gas Operator | Apr 2016 |
| 12622 | Headington Oil Company, L.P. | Dallas, TX 75231 | Oil & Gas Operator | Mar 2008 |
| 12623 | Headline Resources, Inc. | Richardson, TX 75080 | Oil & Gas Operator | Aug 1997 |
| 12624 | Headwaters Energy Partners, LLC | Dripping SPGS, TX 78620 | Oil & Gas Operator | Sep 2026 |
| 12625 | Headwaters Oil Company | | Oil & Gas Operator | Oct 1981 |
| 12626 | Heape Exploration, Inc. | Dallas, TX 75367 | Oil & Gas Operator | Dec 2020 |
| 12627 | Heape, Gene G. | Dallas, TX 75367 | Oil & Gas Operator | Jun 2003 |
| 12628 | Hearn Oil Co. LLC | Newport, OH 45768 | Oil & Gas Operator | Dec 2024 |
| 12629 | Heart Land Petroleum Corporation | Abilene, TX 79604 | Oil & Gas Operator | Mar 2008 |
| 12630 | Heartland Energy Company | Big Horn, WY 82833 | Gas Operator | Jun 2012 |
| 12631 | Heartland Enterprises, Incorporated | Phillipsburg, KS 67661 | Oil Operator | May 2005 |
| 12632 | Heartland Environmental Services | Watonga, OK 73080 | Oil & Gas Operator | May 1999 |
| 12633 | Heartland Exploration | Oklahoma City, OK 73102 | Oil & Gas Operator | Jan 2000 |
| 12634 | Heartland Exploration Inc | Edmond, OK 73013 | Oil & Gas Operator | Dec 2015 |
| 12635 | Heartland Oil & Gas Inc. | Gypsum, KS 67448 | Gas Operator | Jun 2011 |
| 12636 | Heartland Production, Inc. | Cuero, TX 77954 | Oil & Gas Operator | Sep 2026 |
| 12637 | Heartland Pumping | Hennessey, OK 73742-7311 | Oil & Gas Operator | Jun 2026 |
| 12638 | Heartland Resources, Inc. | Temple, TX 76501 | Oil & Gas Operator | Mar 2008 |
| 12639 | Heartlands Development Co Inc | Bristow, OK 74010-3826 | Oil & Gas Operator | May 2017 |
| 12640 | Heat Can Oil, LLC | Chanute, KS 66720 | Oil Operator | Jun 2009 |
| 12641 | Heat Controller Inc | Jackson, MI 49204 | Oil & Gas Operator | Dec 1996 |
| 12642 | Heat Waves Hot Oil Service LLC | Denver, CO 80202 | Oil Operator | Jun 2011 |
| 12643 | Heath Jack A | Tulsa, OK 74132-2403 | Oil & Gas Operator | Jan 2013 |
| 12644 | Heath Oil Co., Inc. | Washington, OK 73093-4702 | Oil & Gas Operator | Jun 2026 |
| 12645 | Heath, Francis A. & Ruth E. | South Dayton, NY 14138 | Gas Operator | Dec 2025 |
| 12646 | Heath, Mark | Leoti, KS 67861 | Oil Operator | Nov 2009 |
| 12647 | Heather & Randy Iantorno Oil | Bolivar, NY 14715 | Oil & Gas Operator | Dec 2025 |
| 12648 | Heaton Everill L | Exeter, CA 93221-2340 | Oil & Gas Operator | Sep 2014 |
| 12649 | Hebert & Rucks L.L.C. | | Oil & Gas Operator | May 2002 |
| 12650 | Hebron Energy, LLC | Dallas, TX 75206 | Oil Operator | Jul 2018 |
| 12651 | Hec Petroleum, Inc | Midland, TX 79705 | Oil & Gas Operator | Mar 2006 |
| 12652 | Hedges Spencer | Casper, WY 82604 | Oil Operator | Mar 2024 |
| 12653 | Hedrick Production Inc. | Corpus Chrsti, TX 78403 | Oil & Gas Operator | Sep 2026 |
| 12654 | Hedrick, Thomasine | Severy, KS 67137 | Oil Operator | May 2011 |
| 12655 | Heflin, Bryan Exploration, Inc. | Strawn, TX 76475 | Oil & Gas Operator | Mar 2008 |
| 12656 | Heger J J & Asso | | Oil Operator | Jun 1983 |
| 12657 | Hegwald, Jacob L. | Humboldt, KS 66748 | Oil Operator | Nov 2019 |
| 12658 | Hehns Quality Gardens Inc | Wadsworth, OH 44281 | Oil & Gas Operator | Dec 2024 |
| 12659 | Heifer Production Company LLC | Houston, TX 77098 | Oil & Gas Operator | Sep 2026 |
| 12660 | Heights Energy Corporation | Plano, TX 75026 | Oil & Gas Operator | Sep 2026 |
| 12661 | Heim Time Farms, LLC | | Oil Operator | Dec 2025 |
| 12662 | Heim, William J. | Springville, NY 14141 | Gas Operator | Dec 2025 |
| 12663 | Heineman, Ronald F. | Caledonia, NY 14423 | Gas Operator | Dec 2025 |
| 12664 | Heinrich Enterprises Inc Dba Washington Operations | Reno, OH 45773 | Oil & Gas Operator | Dec 2025 |
| 12665 | Heinrich Enterprises, Inc. | Reno, OH 457730305 | Oil & Gas Operator | Dec 2021 |
| 12666 | Heinrich Production Co Inc | Lubbuck, TX 79424 | Oil Operator | Dec 2024 |
| 12667 | Heintz Gas & Oil Company, Inc. | Allegany, NY 14706 | Gas Operator | Dec 2025 |
| 12668 | Heisey Ventures, Inc. | Houston, TX 77019 | Oil & Gas Operator | Sep 2026 |
| 12669 | Helberg Oil Comp | | Oil Operator | Mar 1995 |
| 12670 | Helbing & Podpechan | Clarence, OK 74018 | Oil & Gas Operator | May 1983 |
| 12671 | Held By Producti | | Oil & Gas Operator | Feb 1995 |
| 12672 | Held By Production, Inc. | Houston, TX 77251 | Oil & Gas Operator | May 1996 |
| 12673 | Helemrich & Payne Inc | Iraan, TX 79744 | Oil & Gas Operator | Sep 2002 |
| 12674 | Helena Production Corp | | Oil & Gas Operator | Dec 1991 |
| 12675 | Helena Resources Inc | Lakewood, CO 80215 | Oil & Gas Operator | Apr 2026 |
| 12676 | Helena Resources LLC | Helena, OK 73741 | Oil & Gas Operator | Jun 2026 |
| 12677 | Helios Operating, LLC | Houston, TX 77056 | Oil & Gas Operator | Sep 2026 |
| 12678 | Helis Oil & Gas Company LLC Estate | New Orleans, LA 70130 | Oil & Gas Operator | Jul 2022 |
| 12679 | Helis Oil & Gas Company, L.L.C. | New Orleans, LA 70130 | Oil & Gas Operator | Oct 2023 |
| 12680 | Helis, William G. Co., LLC, The | New Orleans, LA 70130 | Oil & Gas Operator | Oct 2003 |
| 12681 | Helis,WM.G.,Est., A Partnership | New Orleans, LA 70130 | Oil & Gas Operator | Aug 2003 |
| 12682 | Helke Exploration Company | Oklahoma City, OK 73112-7201 | Oil & Gas Operator | Feb 2000 |
| 12683 | Hellar Drilling | | Oil & Gas Operator | Jan 1994 |
| 12684 | Hellar Drilling Company, Inc. | Wichita, KS 67208 | Oil & Gas Operator | Jan 2009 |
| 12685 | Hellard Elmer J | Sapulpa, OK 74066 | Oil & Gas Operator | Jul 2026 |
| 12686 | Heller Phillip & Charlene | Columbia, MO 65201 | Oil & Gas Operator | Jun 2026 |
| 12687 | Hellifino Operating, LLC | San Antonio, TX 78249 | Oil Operator | Sep 2026 |
| 12688 | Hellman Properties LLC | | Oil & Gas Operator | Jul 2026 |
| 12689 | Hellums, Harold | Cedar Creek, TX 78612 | Oil & Gas Operator | Mar 2008 |
| 12690 | Helm Energy Company | Tulsa, OK 74133 | Oil Operator | May 2026 |
| 12691 | Helmcamp, Inc. | Wichita Falls, TX 76307 | Oil & Gas Operator | Apr 2002 |
| 12692 | Helmco LTD | Kiefer, OK 74041-0397 | Oil & Gas Operator | Jan 2007 |
| 12693 | Helmco Production Company | Pawhuska, OK 74056 | Oil Operator | Aug 2000 |
| 12694 | Helmer Oil Corporation | | Oil & Gas Operator | Jun 2026 |
| 12695 | Helmer, Bonnie J | | Oil Operator | Jun 2026 |
| 12696 | Helmerich & Payn | | Oil & Gas Operator | Aug 1995 |
| 12697 | Helmerich & Payne, Inc. | Tulsa, OK 74114 | Oil & Gas Operator | May 2026 |
| 12698 | Helmhold Oil Incorporated | Wellsville, NY 14895 | Oil Operator | Dec 2024 |
| 12699 | Helms Oil | Brinkhaven, OH 43006 | Oil Operator | Dec 2018 |
| 12700 | Helms Oil & Gas, LLC | Midland, TX 79710 | Oil & Gas Operator | Sep 2026 |