| 12801 | Hazen, Ty Anthony | Lyons, KS 67554 | Oil Operator | Jun 2025 |
| 12802 | Hazlewood Oil & Gas Co Inc | Oklahoma City, OK 73139-9353 | Oil & Gas Operator | Apr 2022 |
| 12803 | Hazoco, L.L.C. | Bellville, TX 77418 | Oil Operator | Nov 2025 |
| 12804 | HB Energy LLC | Wellsville, KS 66092 | Oil Operator | Jun 2025 |
| 12805 | HB Oil Company | Abilene, TX 79602 | Oil & Gas Operator | Jun 2023 |
| 12806 | HBC Oil Company, LLC | San Antonio, TX 78266 | Oil Operator | Nov 2025 |
| 12807 | HC Resources, Inc. | | Oil & Gas Operator | Jul 2011 |
| 12808 | Hce Operating LLC | Smyer, TX 79367 | Oil & Gas Operator | Nov 2025 |
| 12809 | HCG Energy Corporation & Subs | | Oil & Gas Operator | Mar 2015 |
| 12810 | HCL Inc | Woodward, OK 73802-1074 | Oil Operator | Mar 2015 |
| 12811 | HCM | Dallas, TX 75206 | Oil & Gas Operator | Mar 2015 |
| 12812 | HCW Exploration, Inc. | | Oil & Gas Operator | Jun 1986 |
| 12813 | HD Special-Situations, LP | San Francisco, CA 94111 | Oil & Gas Operator | Feb 2014 |
| 12814 | HD Well Services LLC | Wellsville, KS 66092 | Oil Operator | Jun 2025 |
| 12815 | HDH Resources, Inc. | Wilmore, KS 67155 | Oil & Gas Operator | Jun 2025 |
| 12816 | HDS Production | | Oil Operator | Mar 1998 |
| 12817 | HDT Inc. | | Oil & Gas Operator | Sep 2025 |
| 12818 | Headington Canada Corp. | Dallas, TX 75231 | Gas Operator | Jun 2000 |
| 12819 | Headington Energy Corporation | | Oil & Gas Operator | Aug 1992 |
| 12820 | Headington Energy Partners, LLC | Corpus Chrsti, TX 78401 | Oil & Gas Operator | Nov 2025 |
| 12821 | Headington Oil Company | Dallas, TX 75231 | Oil & Gas Operator | Dec 2016 |
| 12822 | Headington Oil Company LLC | Dallas, TX 75204 | Oil & Gas Operator | Apr 2016 |
| 12823 | Headington Oil Company, L.P. | Dallas, TX 75231 | Oil & Gas Operator | Mar 2008 |
| 12824 | Headline Resources, Inc. | Richardson, TX 75080 | Oil & Gas Operator | Aug 1997 |
| 12825 | Headwaters Energy Partners, LLC | Dripping SPGS, TX 78620 | Oil & Gas Operator | Nov 2025 |
| 12826 | Headwaters Oil Company | | Oil & Gas Operator | Oct 1981 |
| 12827 | Heape Exploration, Inc. | Dallas, TX 75367 | Oil & Gas Operator | Dec 2020 |
| 12828 | Heape, Gene G. | Dallas, TX 75367 | Oil & Gas Operator | Jun 2003 |
| 12829 | Hearn Oil Co. LLC | Newport, OH 45768 | Oil & Gas Operator | Dec 2023 |
| 12830 | Heart Land Petroleum Corporation | Abilene, TX 79604 | Oil & Gas Operator | Mar 2008 |
| 12831 | Heartland Energy Company | Big Horn, WY 82833 | Gas Operator | Jun 2012 |
| 12832 | Heartland Enterprises, Incorporated | Phillipsburg, KS 67661 | Oil Operator | May 2005 |
| 12833 | Heartland Environmental Services | Watonga, OK 73080 | Oil & Gas Operator | May 1999 |
| 12834 | Heartland Exploration | Oklahoma City, OK 73102 | Oil & Gas Operator | Jan 2000 |
| 12835 | Heartland Exploration Inc | Edmond, OK 73013 | Oil & Gas Operator | Dec 2015 |
| 12836 | Heartland Oil & Gas Inc. | Gypsum, KS 67448 | Gas Operator | Jun 2011 |
| 12837 | Heartland Production, Inc. | Cuero, TX 77954 | Oil & Gas Operator | Nov 2025 |
| 12838 | Heartland Pumping | Hennessey, OK 73742-7311 | Oil & Gas Operator | Aug 2025 |
| 12839 | Heartland Resources, Inc. | Temple, TX 76501 | Oil & Gas Operator | Mar 2008 |
| 12840 | Heartlands Development Co Inc | Bristow, OK 74010-3826 | Oil & Gas Operator | May 2017 |
| 12841 | Heat Can Oil, LLC | Chanute, KS 66720 | Oil Operator | Jun 2009 |
| 12842 | Heat Controller Inc | Jackson, MI 49204 | Oil & Gas Operator | Dec 1996 |
| 12843 | Heat Waves Hot Oil Service LLC | Denver, CO 80202 | Oil Operator | Jun 2011 |
| 12844 | Heath 91 Cluster LP | Commodore, PA 15729-9109 | Gas Operator | Dec 2020 |
| 12845 | Heath Jack A | Tulsa, OK 74132-2403 | Oil & Gas Operator | Jan 2013 |
| 12846 | Heath Oil Co., Inc. | Washington, OK 73093-4702 | Oil & Gas Operator | Jul 2025 |
| 12847 | Heath, Chad | Greensburg, KY 42743 | Oil Operator | Dec 2023 |
| 12848 | Heath, Francis A. & Ruth E. | South Dayton, NY 14138 | Gas Operator | Dec 2024 |
| 12849 | Heath, Mark | Leoti, KS 67861 | Oil Operator | Nov 2009 |
| 12850 | Heather & Randy Iantorno Oil | Bolivar, NY 14715 | Oil & Gas Operator | Dec 2024 |
| 12851 | Heatherly, Darl H. | Belington, WV 26250 | Gas Operator | Dec 2021 |
| 12852 | Heaton Everill L | Exeter, CA 93221-2340 | Oil & Gas Operator | Sep 2014 |
| 12853 | Hebert & Rucks L.L.C. | | Oil & Gas Operator | May 2002 |
| 12854 | Hebron Energy, LLC | Dallas, TX 75206 | Oil Operator | Jul 2018 |
| 12855 | Hebron Pipeline | San Antonio, TX 78209 | Oil & Gas Operator | Nov 2025 |
| 12856 | Hec Petroleum, Inc | Midland, TX 79705 | Oil & Gas Operator | Mar 2006 |
| 12857 | Hedges Spencer | Casper, WY 82604 | Oil Operator | Mar 2024 |
| 12858 | Hedrick Production Inc. | Corpus Chrsti, TX 78403 | Oil & Gas Operator | Nov 2025 |
| 12859 | Hedrick, Thomasine | Severy, KS 67137 | Oil Operator | May 2011 |
| 12860 | Heflin, Bryan Exploration, Inc. | Strawn, TX 76475 | Oil & Gas Operator | Mar 2008 |
| 12861 | Heger J J & Asso | | Oil Operator | Jun 1983 |
| 12862 | Hegwald, Jacob L. | Humboldt, KS 66748 | Oil Operator | Nov 2019 |
| 12863 | Hehns Quality Gardens Inc | Wadsworth, OH 44281 | Oil & Gas Operator | Dec 2024 |
| 12864 | Heifer Production Company LLC | Houston, TX 77098 | Oil & Gas Operator | Nov 2025 |
| 12865 | Heights Energy Corporation | Plano, TX 75026 | Oil & Gas Operator | Nov 2025 |
| 12866 | Heim, William J. | Springville, NY 14141 | Gas Operator | Dec 2024 |
| 12867 | Heineman, Ronald F. | Caledonia, NY 14423 | Gas Operator | Dec 2024 |
| 12868 | Heinrich Enterprises Inc Dba Washington Operations | Reno, OH 45773 | Oil & Gas Operator | Dec 2024 |
| 12869 | Heinrich Enterprises, Inc. | Reno, OH 45773-0305 | Oil & Gas Operator | Dec 2021 |
| 12870 | Heinrich Production Co Inc | Lubbuck, TX 79424 | Oil Operator | Dec 2024 |
| 12871 | Heintz Gas & Oil Company, Inc. | Allegany, NY 14706 | Gas Operator | Dec 2024 |
| 12872 | Heisey Ventures, Inc. | Houston, TX 77019 | Oil & Gas Operator | Nov 2025 |
| 12873 | Helberg Oil Comp | | Oil Operator | Mar 1995 |
| 12874 | Helbing & Podpechan | Clarence, OK 74018 | Oil & Gas Operator | May 1983 |
| 12875 | Held By Producti | | Oil & Gas Operator | Feb 1995 |
| 12876 | Held By Production, Inc. | Houston, TX 77251 | Oil & Gas Operator | May 1996 |
| 12877 | Helemrich & Payne Inc | Iraan, TX 79744 | Oil & Gas Operator | Sep 2002 |
| 12878 | Helena Production Corp | | Oil & Gas Operator | Dec 1991 |
| 12879 | Helena Resources Inc | Lakewood, CO 80215 | Oil & Gas Operator | Jul 2025 |
| 12880 | Helena Resources LLC | Helena, OK 73741 | Oil & Gas Operator | Aug 2025 |
| 12881 | Helios Operating, LLC | Houston, TX 77056 | Oil & Gas Operator | Nov 2025 |
| 12882 | Helis Oil & Gas Company LLC Estate | New Orleans, LA 70130 | Oil & Gas Operator | Jul 2022 |
| 12883 | Helis Oil & Gas Company, L.L.C. | New Orleans, LA 70130 | Oil & Gas Operator | Oct 2023 |
| 12884 | Helis, William G. Co., LLC, The | New Orleans, LA 70130 | Oil & Gas Operator | Oct 2003 |
| 12885 | Helis,WM.G.,Est., A Partnership | New Orleans, LA 70130 | Oil & Gas Operator | Aug 2003 |
| 12886 | Helke Exploration Company | Oklahoma City, OK 73112-7201 | Oil & Gas Operator | Feb 2000 |
| 12887 | Hellar Drilling | | Oil & Gas Operator | Jan 1994 |
| 12888 | Hellar Drilling Company, Inc. | Wichita, KS 67208 | Oil & Gas Operator | Jan 2009 |
| 12889 | Hellard Elmer J | Sapulpa, OK 74066 | Oil & Gas Operator | Aug 2025 |
| 12890 | Heller Phillip & Charlene | Columbia, MO 65201 | Oil & Gas Operator | May 2025 |
| 12891 | Hellifino Operating, LLC | San Antonio, TX 78212 | Oil Operator | Nov 2025 |
| 12892 | Hellman Properties LLC | | Oil & Gas Operator | Sep 2025 |
| 12893 | Hellums, Harold | Cedar Creek, TX 78612 | Oil & Gas Operator | Mar 2008 |
| 12894 | Helm Energy Company | Tulsa, OK 74133 | Oil Operator | Jun 2025 |
| 12895 | Helmcamp, Inc. | Wichita Falls, TX 76307 | Oil & Gas Operator | Apr 2002 |
| 12896 | Helmco LTD | Kiefer, OK 74041-0397 | Oil & Gas Operator | Jan 2007 |
| 12897 | Helmco Production Company | Pawhuska, OK 74056 | Oil Operator | Aug 2000 |
| 12898 | Helmer Oil Corporation | | Oil & Gas Operator | Jun 2025 |
| 12899 | Helmer, Bonnie J | | Oil Operator | Jun 2025 |
| 12900 | Helmerich & Payn | | Oil & Gas Operator | Aug 1995 |