| 14001 | Indian Hill Gas Co Inc | Fayette City, PA 15438-1203 | Oil & Gas Operator | Dec 2024 |
| 14002 | Indian Hills Resources LLC | Williamsburg, MI 49690 | Oil & Gas Operator | Dec 2024 |
| 14003 | Indian Nation Energy Company | Wewoka, OK 74884-3456 | Oil & Gas Operator | Apr 2020 |
| 14004 | Indian Oil Company | Gainesville, TX 76241 | Oil & Gas Operator | Jun 2025 |
| 14005 | Indian Oil LTD. | Whitsett, TX 78075 | Oil & Gas Operator | Jun 2025 |
| 14006 | Indian Territory Operating LLC | Salado, TX 76571 | Oil & Gas Operator | Jan 2024 |
| 14007 | Indian Wells Oil | | Oil & Gas Operator | Jul 1995 |
| 14008 | Indian Wells Oil Co | Oklahoma City, OK 73116 | Oil & Gas Operator | Jan 2000 |
| 14009 | Indiana Petroleum Cont | | Oil Operator | Dec 2023 |
| 14010 | Indianola Oil Inc | Bartlesville, OK 74005 | Oil & Gas Operator | Aug 2000 |
| 14011 | Indiek, John | Offerle, KS 67563 | Oil Operator | Nov 2005 |
| 14012 | Indigo Haynesville LLC | | Gas Operator | Feb 2018 |
| 14013 | Indigo II Louisiana Operating LLC | | Oil & Gas Operator | Feb 2015 |
| 14014 | Indigo Minerals LLC | Houston, TX 77002 | Oil & Gas Operator | Sep 2022 |
| 14015 | Indigo Resources LLC | Houston, TX 77002 | Oil & Gas Operator | Mar 2019 |
| 14016 | Indrex Inc | Tulsa, OK 74133 | Oil & Gas Operator | Dec 2000 |
| 14017 | Industrial Gas Services Inc | Wheat Ridge, CO 80033 | Oil & Gas Operator | Feb 2023 |
| 14018 | Industrial Pollution Control | | Oil & Gas Operator | Mar 1985 |
| 14019 | Industry Standard Supplies Inc | Dover, OH 44622 | Oil & Gas Operator | Dec 2024 |
| 14020 | Indy Oil, Inc. | Wichita Falls, TX 76308 | Oil & Gas Operator | Feb 2004 |
| 14021 | Ineos USA Oil & Gas LLC | Denver, CO 80202 | Oil & Gas Operator | Jun 2025 |
| 14022 | Inexco Oil Company | Houston, TX 77210 | Oil & Gas Operator | Mar 2013 |
| 14023 | Inferno Energy | Yates Center, KS 66783 | Oil Operator | Jan 2025 |
| 14024 | Infield Discovery LLC | Madison, MS 39110 | Oil & Gas Operator | Dec 2024 |
| 14025 | Infinity Oil & Gas Inc | Nowata, OK 74048 | Oil Operator | Jun 1993 |
| 14026 | Infinity Oil & Gas Of TX, Inc. | Overland Park, KS 66210 | Oil & Gas Operator | Jun 2025 |
| 14027 | Infinity Oil & Gas Of Wyoming | Rock Springs, WY 82902 | Oil & Gas Operator | Feb 2009 |
| 14028 | Infinity Oil & Gas Of Wyoming Inc | | Oil Operator | Dec 2007 |
| 14029 | Infinity Oil And Gas, L.L.C. | | Oil & Gas Operator | Dec 2024 |
| 14030 | Infinity Oil, Inc. | Hays, KS 67601 | Oil Operator | Feb 2025 |
| 14031 | Inflection Energy (Pa) LLC | Montoursville, PA 17754-9702 | Gas Operator | Mar 2025 |
| 14032 | Inflow Petroleum Resources LP | Dallas, TX 75240 | Oil & Gas Operator | Sep 2008 |
| 14033 | Ingersoll Oil Inc | Hominy, OK 74035 | Oil & Gas Operator | Jun 2000 |
| 14034 | Ingersoll Rosinbaum Oil Inc | | Oil & Gas Operator | Mar 2025 |
| 14035 | Ingo Energy, LLC | | Oil & Gas Operator | Dec 2016 |
| 14036 | Ingram Exploration Inc | Seminole, OK 74868 | Oil & Gas Operator | Apr 2025 |
| 14037 | Ingram, J. Oil & Gas, Inc. | Plano, TX 75074 | Oil & Gas Operator | Jun 2025 |
| 14038 | Initial Energy Services, LLC | San Antonio, TX 78217 | Oil & Gas Operator | Jun 2025 |
| 14039 | Inject Technologies Inc. | Andrews, TX 79714 | Oil Operator | Jun 2025 |
| 14040 | Injection Well Service | Lone Grove, OK 73443-0156 | Oil Operator | Apr 2005 |
| 14041 | Inlan Oceans, LLC | Coffeyville, KS 67337 | Oil Operator | Oct 2024 |
| 14042 | Inland Drilling Co Inc | Garretsville, OH 44231 | Oil & Gas Operator | Dec 1992 |
| 14043 | Inland Gas Corp. | Houston, TX 77036 | Oil Operator | Dec 2011 |
| 14044 | Inland Minerals Management, Inc. | Austin, TX 78701 | Oil & Gas Operator | Jun 2025 |
| 14045 | Inland Ocean, Inc. | San Antonio, TX 78205 | Oil & Gas Operator | Jun 2025 |
| 14046 | Inland Oil And Gas | Nacogdoches, TX 75961 | Oil & Gas Operator | Dec 1997 |
| 14047 | Inland Oil And Gas Corp. | | Gas Operator | Jun 2014 |
| 14048 | Inland Oil Corporation | Sapulpa, OK 74066 | Oil & Gas Operator | Jan 2025 |
| 14049 | Inland Operating Company | Tulsa, OK 74136 | Oil & Gas Operator | Jan 2025 |
| 14050 | Inland Petroleum | Newark, OH 43055 | Oil Operator | Dec 2009 |
| 14051 | Inland Petroleum Company | | Oil & Gas Operator | Dec 1997 |
| 14052 | Inland Production Company | Vernal, UT 84079 | Oil & Gas Operator | Dec 2004 |
| 14053 | Inman Oil LLC | Ruidoso, NM 88355 | Oil Operator | Apr 2025 |
| 14054 | Innes Petroleum | | Oil Operator | Nov 1994 |
| 14055 | Innex California Inc. | | Oil & Gas Operator | Mar 2025 |
| 14056 | Innovative Exploration, LLC | Cincinnati, OH 45219 | Oil Operator | Dec 2023 |
| 14057 | Innovative Resources, Inc. | | Oil Operator | Feb 2022 |
| 14058 | Innoverse Production, LLC | Gainesville, TX 76240 | Oil & Gas Operator | Jun 2025 |
| 14059 | Inpetco, Inc. | | Oil & Gas Operator | Aug 1991 |
| 14060 | Inpex Eagle Ford, LLC | San Antonio, TX 78216 | Oil & Gas Operator | Dec 2022 |
| 14061 | Inr Ohio LLC | Morgantown, WV 26508-9209 | Oil & Gas Operator | Mar 2025 |
| 14062 | Inr Opr LLC | Morgantown, WV 26508-9201 | Gas Operator | Apr 2025 |
| 14063 | Inspire Oil And Gas Inc. | Katy, TX 77449 | Oil & Gas Operator | Jun 2025 |
| 14064 | Instrat Inc. | | Oil & Gas Operator | Dec 1992 |
| 14065 | Int'L Petr & Expl Opr Corp | | Oil & Gas Operator | Jan 2012 |
| 14066 | Integras Operating, LLC | Irving, TX 75062 | Oil & Gas Operator | Jun 2025 |
| 14067 | Integrated Energy Inc | Houston, TX 77002 | Oil & Gas Operator | Aug 2003 |
| 14068 | Integrated Energy Service Corp | Cleveland, OK 74020 | Oil & Gas Operator | Nov 1998 |
| 14069 | Integrated Exploration & Production LLC | | Oil & Gas Operator | Aug 2024 |
| 14070 | Integrated Operating Corporation | Dallas, TX 75243 | Oil & Gas Operator | Jun 2025 |
| 14071 | Integrated Petroleum Corporation | Denver, CO 80202 | Oil Operator | Jan 2010 |
| 14072 | Integrity Funding Sys Inc | Lancaster, PA 17602-1933 | Gas Operator | Dec 2007 |
| 14073 | Integrity Oil & Gas | Golden, CO 80401 | Oil & Gas Operator | May 2011 |
| 14074 | Inter-American Energy Corp. | Toronto, On Canada M5a1n1, 33139 | Gas Operator | Dec 2019 |
| 14075 | Inter-American Petroleum | | Oil & Gas Operator | Dec 2006 |
| 14076 | Inter-State Ener | | Oil Operator | Oct 1987 |
| 14077 | Inter-States Oil & Gas Inc | Edmond, OK 73003-0023 | Oil & Gas Operator | Apr 2020 |
| 14078 | Intercity Management Corp. | Corpus Chrsti, TX 78412 | Oil & Gas Operator | Jun 2025 |
| 14079 | Intercoast Oil And Gas | Tulsa, OK 74136 | Oil & Gas Operator | Mar 1997 |
| 14080 | Intercoast Oil And Gas Company | Tulsa, OK 74136 | Oil & Gas Operator | Jun 1997 |
| 14081 | Intercoastal Energy, Inc. | Houston, TX 77055 | Oil & Gas Operator | Aug 2003 |
| 14082 | Intercoastal Operating Co. | | Oil Operator | Dec 1980 |
| 14083 | Intercontinental Petroleum | | Oil Operator | Oct 2012 |
| 14084 | Intercontinental Tech Group Inc. | | Oil & Gas Operator | Dec 2004 |
| 14085 | Intergrated Drill & Expl Inc | Tulsa, OK 74136-1071 | Oil & Gas Operator | Sep 1994 |
| 14086 | Intergrated Petroleum Corp. | Abilene, TX 79602 | Oil & Gas Operator | Jun 2025 |
| 14087 | Intergy Production LLC | Edmond, OK 73083 | Oil & Gas Operator | Mar 2025 |
| 14088 | Intergy, Inc. | Lomita, CA 90717 | Oil Operator | Jun 1997 |
| 14089 | Interior Oil Cor | | Gas Operator | Jun 1990 |
| 14090 | Interior Oil Corporation | Derby, KS 67037 | Oil & Gas Operator | Jan 2023 |
| 14091 | Interline Resources Corp | Casper, WY 82601 | Oil & Gas Operator | Oct 2009 |
| 14092 | Intermountain Leasing, Inc. | Billings, MT 59103 | Gas Operator | Mar 2020 |
| 14093 | Intermountain Oil Co | | Oil & Gas Operator | Nov 2003 |
| 14094 | Intermountain Operating, Inc. | Billings, MT 59103 | Oil & Gas Operator | Jul 2001 |
| 14095 | Intermountain Petroleum Co | | Oil Operator | Dec 2011 |
| 14096 | Intermountain Refining Co, Inc | Farmington, NM 87499 | Gas Operator | Aug 2006 |
| 14097 | International Basic Res., Inc. | Abilene, TX 79604 | Oil & Gas Operator | May 1996 |
| 14098 | International Energy Company LLC | Tulsa, OK 74136-3922 | Oil & Gas Operator | Jan 2025 |
| 14099 | International Energy Corporation | Tulsa, OK 74136-3922 | Oil & Gas Operator | Dec 2018 |
| 14100 | International Oil & Gas Corp. | | Oil & Gas Operator | Dec 1986 |