| 14001 | Infield Discovery LLC | Madison, MS 39110 | Oil & Gas Operator | Sep 2025 |
| 14002 | Infinity Oil & Gas Inc | Nowata, OK 74048 | Oil Operator | Jun 1993 |
| 14003 | Infinity Oil & Gas Of TX, Inc. | Overland Park, KS 66210 | Oil & Gas Operator | Mar 2026 |
| 14004 | Infinity Oil & Gas Of Wyoming | Rock Springs, WY 82902 | Oil & Gas Operator | Feb 2009 |
| 14005 | Infinity Oil And Gas, L.L.C. | | Oil & Gas Operator | Dec 2024 |
| 14006 | Infinity Oil, Inc. | Hays, KS 67601 | Oil Operator | Sep 2025 |
| 14007 | Inflection Energy (Pa) LLC | Montoursville, PA 17754-9702 | Gas Operator | Mar 2025 |
| 14008 | Inflow Petroleum Resources LP | Dallas, TX 75240 | Oil & Gas Operator | Sep 2008 |
| 14009 | Ingersoll Oil Inc | Hominy, OK 74035 | Oil & Gas Operator | Jun 2000 |
| 14010 | Ingersoll Rosinbaum Oil Inc | | Oil & Gas Operator | Dec 2025 |
| 14011 | Ingo Energy, LLC | | Oil & Gas Operator | Dec 2016 |
| 14012 | Ingram Exploration Inc | Seminole, OK 74868 | Oil & Gas Operator | Dec 2025 |
| 14013 | Ingram, J. Oil & Gas, Inc. | Plano, TX 75074 | Oil & Gas Operator | Mar 2026 |
| 14014 | Initial Energy Services, LLC | San Antonio, TX 78217 | Oil & Gas Operator | Mar 2026 |
| 14015 | Inject Technologies Inc. | Andrews, TX 79714 | Oil Operator | Mar 2026 |
| 14016 | Injection Well Service | Lone Grove, OK 73443-0156 | Oil Operator | Apr 2005 |
| 14017 | Inlan Oceans, LLC | Coffeyville, KS 67337 | Oil Operator | Jun 2025 |
| 14018 | Inland Drilling Co Inc | Garretsville, OH 44231 | Oil & Gas Operator | Dec 1992 |
| 14019 | Inland Gas Corp. | Houston, TX 77036 | Oil Operator | Dec 2011 |
| 14020 | Inland Minerals Management, Inc. | Austin, TX 78701 | Oil & Gas Operator | Mar 2026 |
| 14021 | Inland Ocean, Inc. | San Antonio, TX 78205 | Oil & Gas Operator | Mar 2026 |
| 14022 | Inland Oil And Gas Company, Inc. | Chireno, TX 75937 | Oil & Gas Operator | Jun 2005 |
| 14023 | Inland Oil And Gas Corp. | | Gas Operator | Jun 2014 |
| 14024 | Inland Oil Corporation | Sapulpa, OK 74067 | Oil & Gas Operator | Jan 2026 |
| 14025 | Inland Operating Company | Tulsa, OK 74136 | Oil & Gas Operator | Nov 2025 |
| 14026 | Inland Petroleum | Newark, OH 43055 | Oil Operator | Dec 2009 |
| 14027 | Inland Petroleum Company | | Oil & Gas Operator | Dec 1997 |
| 14028 | Inland Production Company | Vernal, UT 84079 | Oil & Gas Operator | Dec 2004 |
| 14029 | Inman Oil LLC | Ruidoso, NM 88355 | Oil Operator | Dec 2025 |
| 14030 | Innes Petroleum | | Oil Operator | Nov 1994 |
| 14031 | Innex California Inc. | | Oil & Gas Operator | Dec 2025 |
| 14032 | Innovative Exploration, LLC | Cincinnati, OH 45219 | Oil Operator | Dec 2024 |
| 14033 | Innovative Resources, Inc. | | Oil Operator | Feb 2022 |
| 14034 | Innoverse Production, LLC | Gainesville, TX 76240 | Oil & Gas Operator | Mar 2026 |
| 14035 | Inpetco, Inc. | | Oil & Gas Operator | Aug 1991 |
| 14036 | Inpex Eagle Ford, LLC | San Antonio, TX 78216 | Oil & Gas Operator | Dec 2022 |
| 14037 | Inr Ohio LLC | Morgantown, WV 26508-9209 | Oil & Gas Operator | Sep 2025 |
| 14038 | Inr Opr LLC | Morgantown, WV 26508-9201 | Gas Operator | Dec 2025 |
| 14039 | Inspire Oil And Gas Inc. | Katy, TX 77449 | Oil Operator | Mar 2026 |
| 14040 | Instrat Inc. | | Oil & Gas Operator | Dec 1992 |
| 14041 | Int'L Petr & Expl Opr Corp | | Oil & Gas Operator | Jan 2012 |
| 14042 | Integras Operating, LLC | Irving, TX 75062 | Oil & Gas Operator | Mar 2026 |
| 14043 | Integrated Energy Inc | Houston, TX 77002 | Oil & Gas Operator | Aug 2003 |
| 14044 | Integrated Energy Service Corp | Cleveland, OK 74020 | Oil & Gas Operator | Nov 1998 |
| 14045 | Integrated Exploration & Production LLC | | Oil & Gas Operator | Aug 2024 |
| 14046 | Integrated Operating Corporation | Dallas, TX 75243 | Oil & Gas Operator | Mar 2026 |
| 14047 | Integrated Petroleum Corporation | Denver, CO 80202 | Oil Operator | Jan 2010 |
| 14048 | Integrity Funding Sys Inc | Lancaster, PA 17602-1933 | Gas Operator | Dec 2007 |
| 14049 | Integrity Oil & Gas | Golden, CO 80401 | Oil & Gas Operator | May 2011 |
| 14050 | Inter-American Energy Corp. | Toronto, On Canada M5a1n1, 33139 | Gas Operator | Dec 2019 |
| 14051 | Inter-American Petroleum | | Oil & Gas Operator | Dec 2006 |
| 14052 | Inter-State Ener | | Oil Operator | Oct 1987 |
| 14053 | Inter-States Oil & Gas Inc | Edmond, OK 73003-0023 | Oil & Gas Operator | Apr 2020 |
| 14054 | Intercity Management Corp. | Corpus Chrsti, TX 78412 | Oil & Gas Operator | Mar 2026 |
| 14055 | Intercoast Oil And Gas | Tulsa, OK 74136 | Oil & Gas Operator | Mar 1997 |
| 14056 | Intercoast Oil And Gas Company | Tulsa, OK 74136 | Oil & Gas Operator | Jun 1997 |
| 14057 | Intercoastal Energy, Inc. | Houston, TX 77055 | Oil & Gas Operator | Aug 2003 |
| 14058 | Intercoastal Operating Co. | | Oil Operator | Dec 1980 |
| 14059 | Intercontinental Petroleum | | Oil Operator | Oct 2012 |
| 14060 | Intercontinental Tech Group Inc. | | Oil & Gas Operator | Dec 2004 |
| 14061 | Intergrated Drill & Expl Inc | Tulsa, OK 74136-1071 | Oil & Gas Operator | Sep 1994 |
| 14062 | Intergrated Petroleum Corp. | Abilene, TX 79602 | Oil & Gas Operator | Mar 2026 |
| 14063 | Intergy Production LLC | Edmond, OK 73083 | Oil & Gas Operator | Jan 2026 |
| 14064 | Intergy, Inc. | Lomita, CA 90717 | Oil Operator | Jun 1997 |
| 14065 | Interior Oil Cor | | Gas Operator | Jun 1990 |
| 14066 | Interior Oil Corporation | Derby, KS 67037 | Oil & Gas Operator | Jan 2023 |
| 14067 | Interline Resources Corp | Casper, WY 82601 | Oil & Gas Operator | Oct 2009 |
| 14068 | Intermountain Leasing, Inc. | Billings, MT 59103 | Gas Operator | Mar 2020 |
| 14069 | Intermountain Operating, Inc. | Billings, MT 59103 | Oil & Gas Operator | Jul 2001 |
| 14070 | Intermountain Petroleum Co | | Oil Operator | Dec 2011 |
| 14071 | Intermountain Refining Co, Inc | Farmington, NM 87499 | Gas Operator | Aug 2006 |
| 14072 | International Basic Res., Inc. | Abilene, TX 79604 | Oil & Gas Operator | May 1996 |
| 14073 | International Energy Company LLC | Tulsa, OK 74136-3922 | Oil & Gas Operator | Dec 2025 |
| 14074 | International Energy Corporation | Tulsa, OK 74136-3922 | Oil & Gas Operator | Dec 2018 |
| 14075 | International Oil & Gas Corp. | | Oil & Gas Operator | Dec 1986 |
| 14076 | International Oil&Gas Consultant | Graham, TX 76450 | Oil & Gas Operator | Mar 2026 |
| 14077 | International Petroleum Service, LLC | | Oil Operator | Dec 2017 |
| 14078 | International Ventures Inc | Pogasa Springs, CO 81147 | Oil Operator | Jul 1996 |
| 14079 | International Western Oil Corp | Weatherford, TX 76086 | Oil & Gas Operator | Mar 2026 |
| 14080 | Internorth Inc | Tulsa, OK 74136 | Oil & Gas Operator | Apr 2014 |
| 14081 | Interstate Energy Inc | | Oil & Gas Operator | Dec 2002 |
| 14082 | Interstate Explorations LLC | Houston, TX 77010 | Oil & Gas Operator | Mar 2026 |
| 14083 | Interstate Gas Co. | | Gas Operator | Dec 1941 |
| 14084 | Interstate Gas MKT Inc | Indiana, PA 15701 | Oil & Gas Operator | Dec 2018 |
| 14085 | Interstate Natural Gas Company, LLC | Pikeville, KY 41502 | Oil & Gas Operator | Dec 2024 |
| 14086 | Interstate Operating LLC | Tulsa, OK 74101-0535 | Oil & Gas Operator | Aug 2013 |
| 14087 | Interstate Producing Ser Inc | | Oil & Gas Operator | May 1986 |
| 14088 | Interstate Producing Servs,Inc | | Oil & Gas Operator | May 1987 |
| 14089 | Interstate Production Company, Inc. | Buckhannon, WV 26201-0000 | Oil & Gas Operator | Dec 2021 |
| 14090 | Intoil, Inc. | Englewood, CO 80155 | Oil & Gas Operator | Dec 2002 |
| 14091 | Intrepid Drilling, LLC | | Oil & Gas Operator | Jan 2025 |
| 14092 | Intrepid Energy Corporation | Independence, KS 67301 | Oil Operator | Mar 2016 |
| 14093 | Intrepid Oil & Gas LLC | Denver, CO 80202 | Oil & Gas Operator | Apr 2021 |
| 14094 | Intrepid Operating LTD., Co | Hobbs, NM 88241 | Oil & Gas Operator | Nov 2009 |
| 14095 | Intrepid Production Corporation | Denver, CO 80202 | Oil & Gas Operator | Jan 2026 |
| 14096 | Investco Oil And Gas Inc | | Oil & Gas Operator | Jan 2025 |
| 14097 | Investment Equipment LLC | FT Morgan, CO 80701 | Oil & Gas Operator | Dec 2025 |
| 14098 | Investment Land Services Inc | | Oil Operator | Oct 2001 |
| 14099 | Investment Operating Co | Stillwater, OK 74075-8572 | Oil Operator | Dec 2025 |
| 14100 | Investment Trends Corp. | | Gas Operator | Mar 1988 |