| 13901 | Huson Corp. | Albany, TX 76430 | Oil & Gas Operator | May 2003 |
| 13902 | Huston Minerals LP | Albany, TX 76430 | Oil & Gas Operator | May 2025 |
| 13903 | Huston Oil | Woodson, TX 76491 | Oil & Gas Operator | Oct 2010 |
| 13904 | Hutchinson Oil C | | Oil & Gas Operator | May 1995 |
| 13905 | Hutchinson Oil Co. | | Oil & Gas Operator | Jan 2025 |
| 13906 | Hutchison Jay Oi | | Oil Operator | Sep 1991 |
| 13907 | Hutson Oil Co. | | Oil & Gas Operator | Nov 2024 |
| 13908 | Hutton Charles N | | Oil Operator | Dec 1994 |
| 13909 | Hutton Gas Operating Company | Tulsa, OK 74136 | Oil & Gas Operator | Mar 2015 |
| 13910 | Hutton, Charles N., SR. | Iola, KS 66749 | Oil Operator | Nov 2007 |
| 13911 | Hux Oil Company LLC | Kingfisher, OK 73750 | Oil & Gas Operator | Mar 2025 |
| 13912 | Hvi Cat Canyon Inc. | | Oil & Gas Operator | Feb 2025 |
| 13913 | HW Operating, LLC | Wichita Falls, TX 76308 | Oil & Gas Operator | May 2025 |
| 13914 | HWH Production, LLC | Muenster, TX 76252 | Oil Operator | May 2025 |
| 13915 | Hy-Mark Oil & Gas, Inc. | | Oil Operator | Mar 1991 |
| 13916 | Hy-Tech, Inc. | Pampa, TX 79066 | Oil & Gas Operator | Feb 2017 |
| 13917 | Hyalite Energy Corporation | Pampa, TX 79066 | Oil & Gas Operator | Feb 2025 |
| 13918 | Hyatt Exploration, Inc. | | Oil Operator | Jul 1995 |
| 13919 | Hybrid Operating, Incorporated | Carlsbad, CA 92009 | Oil & Gas Operator | May 2025 |
| 13920 | Hyco Oil Inc | Newcastle, WY 82701 | Oil & Gas Operator | Dec 2006 |
| 13921 | Hyde-Marrs, Inc. | Wichita, KS 67202 | Oil Operator | Aug 1997 |
| 13922 | Hydroc Oil Company | Borger, TX 79007 | Oil & Gas Operator | May 2012 |
| 13923 | Hydrocarbon Exploration, Inc. | | Oil & Gas Operator | Dec 2008 |
| 13924 | Hydrocarbon Generation, Inc. | Allegany, NY 14706 | Oil & Gas Operator | Dec 2023 |
| 13925 | Hydrocarbon Horizons, Inc. | Corpus Chrsti, TX 78473 | Oil & Gas Operator | Jun 2023 |
| 13926 | Hydrocarbon Inv, Inc | | Oil Operator | Dec 2018 |
| 13927 | Hydrocarbon Lease Management LTD | Addison, TX 75001 | Oil & Gas Operator | Jul 2002 |
| 13928 | Hydrocarbon Management, Inc. | San Antonio, TX 78216 | Oil & Gas Operator | Dec 1996 |
| 13929 | Hydrocarbon MGMT., Inc. | | Oil & Gas Operator | Mar 1997 |
| 13930 | Hydrocarbon Operating, Inc. | Corpus Chrsti, TX 78401 | Oil & Gas Operator | May 2025 |
| 13931 | Hydrocarbon Resources LTD | Medina, OH 44256 | Oil & Gas Operator | Dec 2022 |
| 13932 | Hydrocarbon Technology Services | | Oil & Gas Operator | Dec 2000 |
| 13933 | Hydrogeo Energy, LLC | Houston, TX 77074 | Oil Operator | May 2025 |
| 13934 | Hydrogeo, L.L.C. | Houston, TX 77074 | Oil & Gas Operator | May 2025 |
| 13935 | Hyer,Na & CJ Aldenhoven Trusts | Lipan, TX 76462 | Gas Operator | Oct 2017 |
| 13936 | Hyland Oil Corporation | | Oil & Gas Operator | Apr 1990 |
| 13937 | Hyman Muslow | | Oil Operator | Jun 1995 |
| 13938 | Hyndrex Resources | | Oil & Gas Operator | Apr 2018 |
| 13939 | Hyperion Energy LP | Dallas, TX 75206 | Oil & Gas Operator | May 2014 |
| 13940 | Hyperion Oil & Gas LLC | Dallas, TX 75251 | Oil & Gas Operator | May 2025 |
| 13941 | Hyquest Energy, Inc. | Midland, TX 79710 | Oil & Gas Operator | Mar 2015 |
| 13942 | I & F Oil And Farm | | Oil & Gas Operator | Dec 2009 |
| 13943 | I & L Development Co. | Dallas, TX 75219 | Oil & Gas Operator | Mar 1996 |
| 13944 | I & M Oil Production, LLC | Overland Park, KS 66209 | Oil & Gas Operator | Jan 2025 |
| 13945 | I C Gas Amcana Inc | Tulsa, OK 74103-3713 | Oil & Gas Operator | Apr 1996 |
| 13946 | I D Oil Company Inc | Sperry, OK 74073-9417 | Oil Operator | Jan 2013 |
| 13947 | I T Enterprises Inc | Tulsa, OK 74170-0775 | Oil & Gas Operator | Mar 2011 |
| 13948 | I-Mac Petroleum Service Inc | Bixby, OK 74008-3778 | Oil & Gas Operator | Apr 2020 |
| 13949 | I. H. Delatte | | Oil & Gas Operator | Jul 1991 |
| 13950 | I. J. Wilhite | | Oil Operator | Apr 2000 |
| 13951 | I. J. Wilhite & Star Drilling, Inc. | | Oil Operator | Sep 1973 |
| 13952 | I. W. McKnight,Production | | Oil Operator | Jan 1986 |
| 13953 | I.G. Petroleum, L.L.C | | Oil & Gas Operator | Dec 2018 |
| 13954 | I.T. Corporation | Arlington, TX 76016 | Oil & Gas Operator | May 2025 |
| 13955 | Ia Operating, Inc. | Edmond, OK 73003 | Oil Operator | Jan 2025 |
| 13956 | Iacobucci, Gary | Eden, NY 14057 | Gas Operator | Dec 2023 |
| 13957 | Iacx Energy LLC | Dallas, TX 75244 | Gas Operator | Apr 2025 |
| 13958 | Iacx Production LLC | Roswell, NM 88201 | Oil & Gas Operator | Mar 2025 |
| 13959 | Iantha Resources LLC | Garnett, KS 66032 | Oil Operator | Dec 2019 |
| 13960 | Iantorno Brothers Oil | Bolivar, NY 14715 | Oil & Gas Operator | Dec 2023 |
| 13961 | Ibc Petroleum, Inc. | San Antonio, TX 78258 | Oil & Gas Operator | May 2025 |
| 13962 | Iberia Operating Corporation | | Oil & Gas Operator | Jan 2003 |
| 13963 | Ibex Resources I, L.P. | Midland, TX 79701 | Oil & Gas Operator | Jul 1999 |
| 13964 | Ibex Resources Operating LLC | The Woodlands, TX 77380 | Oil & Gas Operator | Jun 2007 |
| 13965 | Ibex Resources, LLC | Austin, TX 78751 | Oil & Gas Operator | Jul 1999 |
| 13966 | Ica Energy Operating, L.L.C. | Odessa, TX 79760 | Oil & Gas Operator | May 2025 |
| 13967 | Icarus Operating Corporation | Spring, TX 77393 | Oil & Gas Operator | May 2025 |
| 13968 | Ice Brothers, Inc. | Monahans, TX 79756 | Oil & Gas Operator | Jul 2024 |
| 13969 | Ice Well Services, Inc. | Abilene, TX 79603 | Oil & Gas Operator | May 2025 |
| 13970 | Icg Tygart Valley, LLC | Grafton, WV 26354 | Oil & Gas Operator | Dec 2021 |
| 13971 | Ickert Enterprises | Olney, TX 76374 | Oil & Gas Operator | May 2025 |
| 13972 | Ickert, A. F. Jr. | Olney, TX 76374 | Oil & Gas Operator | Apr 1998 |
| 13973 | Icon Energy Company | Oklahoma City, OK 73156-1613 | Oil & Gas Operator | Feb 2025 |
| 13974 | Iconic Oil & Gas LLC | Dallas, TX 75229 | Gas Operator | Jan 2025 |
| 13975 | Icor Oil & Gas Of Okla LTD | Claremore, OK 74018-2132 | Oil & Gas Operator | Mar 2015 |
| 13976 | Ics Energy LLC | Stamford, TX 79553 | Oil & Gas Operator | May 2025 |
| 13977 | Idaho Oil Co., Inc. | San Antonio, TX 78212 | Oil & Gas Operator | Mar 2008 |
| 13978 | Idc Energy Corp | Warren, PA 16365-0792 | Oil & Gas Operator | Dec 2021 |
| 13979 | Idgas, Inc. | Austin, TX 78746 | Oil & Gas Operator | Oct 1995 |
| 13980 | Iep Kansas Gas, LLC | Burlington, CO 80807 | Oil & Gas Operator | Mar 2025 |
| 13981 | Igas Corp | Charlottesville, VA 22905-5246 | Gas Operator | Dec 2000 |
| 13982 | Igleheart Warren | Edmond, OK 73034-8964 | Oil & Gas Operator | Jun 2016 |
| 13983 | Igwt, Inc. | Rose Hill, KS 67133 | Oil & Gas Operator | Jan 2025 |
| 13984 | Ijs Oil | Saint Jo, TX 76265 | Oil & Gas Operator | May 2025 |
| 13985 | Ikard, Alan | Electra, TX 76360 | Oil & Gas Operator | May 2025 |
| 13986 | Ike Energy LLC | Stillwater, OK 74074-1745 | Oil & Gas Operator | Jan 2025 |
| 13987 | Ike Lovelady, Inc. | | Oil & Gas Operator | Jun 1985 |
| 13988 | Ike Operating, LLC | Houston, TX 77010 | Oil & Gas Operator | May 2025 |
| 13989 | Ikenberry Herman & Ikenberry | | Oil Operator | Jul 1999 |
| 13990 | Iks Operating | Upton, WY 82703 | Oil & Gas Operator | Jul 2013 |
| 13991 | Il Geer & Sons Partnership | Clarendon, PA 16313-4107 | Oil & Gas Operator | Dec 2013 |
| 13992 | Illini Development Company | | Oil & Gas Operator | Dec 2002 |
| 13993 | Illoma Oil Company Inc | Algonquin, IL 60102-1825 | Oil & Gas Operator | Mar 2015 |
| 13994 | Imagery Exploration, Inc. | Dallas, TX 75380 | Oil & Gas Operator | May 2025 |
| 13995 | Imc Exploration Co. | | Oil & Gas Operator | Oct 1986 |
| 13996 | Immink Merle | | Oil & Gas Operator | Mar 2025 |
| 13997 | Imod Oil Prod LLC | Pleasantville, PA 16341-0149 | Oil & Gas Operator | Dec 2009 |
| 13998 | Impact Energy Operating LLC | Oklahoma City, OK 73172 | Oil & Gas Operator | Mar 2025 |
| 13999 | Impact Exploration & Production LLC | Greenwood VIllage, CO 80111 | Oil & Gas Operator | Mar 2025 |
| 14000 | Impact Exploration Company | Oklahoma City, OK 73118 | Oil & Gas Operator | May 1998 |