| 14101 | International Oil&Gas Consultant | Graham, TX 76450 | Oil & Gas Operator | Jun 2025 |
| 14102 | International Petroleum Service, LLC | | Oil Operator | Dec 2017 |
| 14103 | International Ventures, Inc. | Pogasa Springs, CO 81147 | Oil Operator | Jul 1996 |
| 14104 | International Western Oil Corp | Weatherford, TX 76086 | Oil & Gas Operator | Jun 2025 |
| 14105 | Internorth Inc | Tulsa, OK 74136 | Oil & Gas Operator | Apr 2014 |
| 14106 | Interstate Energy Inc | | Oil & Gas Operator | Dec 2002 |
| 14107 | Interstate Explorations LLC | Houston, TX 77010 | Oil & Gas Operator | Jun 2025 |
| 14108 | Interstate Gas Co. | | Gas Operator | Dec 1941 |
| 14109 | Interstate Gas MKT Inc | Indiana, PA 15701 | Oil & Gas Operator | Dec 2018 |
| 14110 | Interstate Natural Gas Company, LLC | Pikeville, KY 41502 | Oil & Gas Operator | Dec 2023 |
| 14111 | Interstate Operating LLC | Tulsa, OK 74101-0535 | Oil & Gas Operator | Aug 2013 |
| 14112 | Interstate Producing Ser Inc | | Oil & Gas Operator | May 1986 |
| 14113 | Interstate Producing Servs,Inc | | Oil & Gas Operator | May 1987 |
| 14114 | Interstate Production Company, Inc. | Buckhannon, WV 26201-0000 | Oil & Gas Operator | Dec 2021 |
| 14115 | Intoil, Inc. | Englewood, CO 80155 | Oil & Gas Operator | Dec 2002 |
| 14116 | Intrepid Drilling, LLC | | Oil & Gas Operator | Jan 2025 |
| 14117 | Intrepid Energy Corporation | Independence, KS 67301 | Oil Operator | Mar 2016 |
| 14118 | Intrepid Oil & Gas LLC | Denver, CO 80202 | Oil & Gas Operator | Apr 2021 |
| 14119 | Intrepid Operating LTD., Co | Hobbs, NM 88241 | Oil & Gas Operator | Nov 2009 |
| 14120 | Intrepid Production Corporation | Denver, CO 80202 | Oil & Gas Operator | Apr 2025 |
| 14121 | Investco Oil And Gas Inc | | Oil & Gas Operator | Jan 2025 |
| 14122 | Investment Equipment LLC | FT Morgan, CO 80701 | Oil & Gas Operator | Apr 2025 |
| 14123 | Investment Land Services Inc | | Oil Operator | Oct 2001 |
| 14124 | Investment Operating Co | Stillwater, OK 74075-8572 | Oil Operator | Sep 2024 |
| 14125 | Investment Trends Corp. | | Gas Operator | Mar 1988 |
| 14126 | Investors Drilli | | Gas Operator | Jan 1993 |
| 14127 | Investors Oil, Inc. | | Oil Operator | Mar 1985 |
| 14128 | Investors Resources Corp | Edmond, OK 73034 | Oil & Gas Operator | Apr 2025 |
| 14129 | Invitation Energy, Incorporated | | Oil & Gas Operator | Dec 2021 |
| 14130 | Invito Operating, LLC | McKinney, TX 75070 | Oil & Gas Operator | Mar 2025 |
| 14131 | Invoil, Inc. | Oklahoma City, OK 73112 | Oil & Gas Operator | Jun 2025 |
| 14132 | Iochem Corporation | Oklahoma City, OK 73118-7483 | Oil & Gas Operator | Mar 2025 |
| 14133 | Ioe Acres V LLC | Perry, NY 14530 | Gas Operator | Dec 2023 |
| 14134 | Iola Wildcat LLC | Kansas City, MO 64190 | Oil Operator | Feb 2025 |
| 14135 | Iowa Production Company, Inc. | | Oil & Gas Operator | Jan 1992 |
| 14136 | Ip Petroleum Company, Inc. | Houston, TX 77210 | Oil & Gas Operator | Mar 2008 |
| 14137 | Ipact | Austin, TX 78734 | Oil & Gas Operator | Jun 2025 |
| 14138 | Ipas Oil Company LLC | Pratt, KS 67124 | Oil Operator | Dec 2019 |
| 14139 | Ipr Energy Partners, L.P. | Bowie, TX 76230 | Oil & Gas Operator | Aug 2014 |
| 14140 | Ipr Energy Partners, LLC | Bowie, TX 76230 | Oil & Gas Operator | Jun 2025 |
| 14141 | Ipr USA Corp. | Irving, TX 75039 | Oil & Gas Operator | Jun 2009 |
| 14142 | Ipt Oil Company | Evansville, IN 47706 | Oil & Gas Operator | Jun 2025 |
| 14143 | Ira Oil & Gas LLC | Addison, TX 75001 | Oil & Gas Operator | Jul 2008 |
| 14144 | Ira Testers | Ira, TX 79527 | Oil & Gas Operator | Mar 2024 |
| 14145 | Ira Testers, LLC | Ira, TX 79527 | Oil Operator | Jun 2025 |
| 14146 | Irani Engineering | | Gas Operator | Dec 1995 |
| 14147 | Irene L. Heary Irrevocable Trust | Springville, NY 14141 | Gas Operator | Dec 2023 |
| 14148 | Irex Corporation | Englewood, CO 80111 | Oil & Gas Operator | May 2000 |
| 14149 | Iriart, Joe | Price, UT 84501 | Gas Operator | Apr 2025 |
| 14150 | Irion Corporation, The | San Angelo, TX 76906 | Oil & Gas Operator | Jun 2021 |
| 14151 | Irish City Oil & Gas, Inc. | Wimberley, TX 78676 | Oil & Gas Operator | Jun 2025 |
| 14152 | Irish Oil & Gas Co. | Houston, TX 77242 | Oil & Gas Operator | Aug 2003 |
| 14153 | Iron Bell Operating, LLC | Lubbock, TX 79423 | Oil & Gas Operator | Jun 2025 |
| 14154 | Iron Creek Properties Inc | Casper, WY 82604 | Oil & Gas Operator | Apr 2025 |
| 14155 | Iron Hawk Energy Group Joint Venture | Tulsa, OK 74103 | Oil & Gas Operator | Mar 2025 |
| 14156 | Iron Horse Oil & Gas, Inc. | Albany, TX 76430 | Oil & Gas Operator | Jun 2025 |
| 14157 | Iron Oil Operating, LLC | | Oil & Gas Operator | Apr 2025 |
| 14158 | Iron Orchard Operating LLC | Houston, TX 77024 | Oil & Gas Operator | Jun 2025 |
| 14159 | Iron Pennsylvania Land LLC | Waynesburg, PA 15370 | Gas Operator | Dec 2024 |
| 14160 | Iron Post Oil & Gas Co Inc | Bristow, OK 74010-4120 | Oil & Gas Operator | Mar 2025 |
| 14161 | Iron Ridge Operating, LLC | Austin, TX 78738 | Oil & Gas Operator | Jun 2025 |
| 14162 | Iron Sights Operating, Inc. | Stillwater, OK 74076 | Oil & Gas Operator | Jul 2022 |
| 14163 | Iron Springs Operating Co. Inc | | Oil & Gas Operator | Jan 2025 |
| 14164 | Iron Star Energy LLC | Houston, TX 77037-1142 | Oil & Gas Operator | Apr 2025 |
| 14165 | Ironhorse Operations, LLC | Kilgore, TX 75663 | Oil Operator | Jun 2025 |
| 14166 | Ironroc Energy | The Woodlands, TX 77381 | Oil & Gas Operator | Jun 2025 |
| 14167 | Ironwood Exploration Inc | | Oil & Gas Operator | Mar 1995 |
| 14168 | Ironwood Oil & Gas LLC | Houston, TX 77067 | Oil & Gas Operator | Jun 2014 |
| 14169 | Iroquois Central School District | Elma, NY 14059 | Gas Operator | Dec 2023 |
| 14170 | Irvin Drilling Corp | Zanesville, OH 43701 | Oil & Gas Operator | Dec 1990 |
| 14171 | Irvin Operations, Inc. | | Oil Operator | Aug 1996 |
| 14172 | Irvin Petroleum | Stinnett, TX 79083 | Oil & Gas Operator | Sep 1996 |
| 14173 | Irvin Petroleum Inc. | Stinnett, TX 79083 | Oil & Gas Operator | Apr 2016 |
| 14174 | Irwin H. Parnes | | Oil Operator | Jun 1982 |
| 14175 | Irwin-Crum | Nocona, TX 76255 | Oil Operator | Jun 2025 |
| 14176 | Isaacs Fairy J | Konawa, OK 74849-0134 | Oil Operator | Sep 2020 |
| 14177 | Isaacs Scott J Jr | Butler, PA 16002-0059 | Gas Operator | Apr 2025 |
| 14178 | Isaacson Energy Resources, LLC | Austin, TX 78741 | Oil & Gas Operator | Jun 2025 |
| 14179 | Isaia, Deborah | East Aurora, NY 14052 | Gas Operator | Dec 2023 |
| 14180 | Isbell, Bob G. Operating | Cisco, TX 76437 | Oil & Gas Operator | Mar 2015 |
| 14181 | Isbrandtsen Oil And Gas Co | | Oil Operator | Mar 2002 |
| 14182 | Iseman William R | Ford City, PA 16226-1488 | Gas Operator | Dec 2024 |
| 14183 | Isern, James R. | Wichita, KS 67277 | Oil Operator | Apr 1996 |
| 14184 | Isis Operating Inc | Russell, KS 67665 | Oil Operator | Jan 2025 |
| 14185 | Iskandia Energy Operating, Inc. | Houston, TX 77002 | Oil & Gas Operator | Jun 2025 |
| 14186 | Island Energy Partners LLC | | Gas Operator | Jan 2018 |
| 14187 | Island Exploration | Houston, TX 77058 | Oil & Gas Operator | Jun 2025 |
| 14188 | Island Petroleum, Inc. | | Gas Operator | Mar 1998 |
| 14189 | Isom Energy, Inc. | San Angelo, TX 76904 | Oil & Gas Operator | May 2018 |
| 14190 | Ison, Samuel M | Isonville, KY 41149 | Oil Operator | Dec 2023 |
| 14191 | It'LL Do Oil Company | Graham, TX 76450 | Oil & Gas Operator | Nov 2024 |
| 14192 | Italian-American Oil Co., Inc. | Tomball, TX 77377 | Oil & Gas Operator | Jun 2025 |
| 14193 | Itawamba Industrial Gas Co | | Gas Operator | Dec 1999 |
| 14194 | Itech Oil Company | Cypress, TX 77429 | Oil & Gas Operator | Aug 2007 |
| 14195 | Itr Petroleum Inc | Houston, TX 77002 | Oil & Gas Operator | Apr 1998 |
| 14196 | Itx Corporation | Dallas, TX 75225 | Oil & Gas Operator | Jun 2025 |
| 14197 | Itx Pipeline Company, LLC | Dallas, TX 75225 | Oil & Gas Operator | Jun 2025 |
| 14198 | Iuka-Carmi Development LLC | Pratt, KS 67124 | Oil & Gas Operator | Feb 2025 |
| 14199 | Iv L.C. | San Antonio, TX 78209 | Oil & Gas Operator | Jun 2025 |
| 14200 | Iva Oil | Cisco, TX 76437 | Oil & Gas Operator | Jun 2025 |