| 2101 | Hughes, Wise & Assoc., Inc | | Oil Operator | Jul 1987 |
| 2102 | Hughes-Denny Petroleum Co.,Inc | | Oil & Gas Operator | Dec 1987 |
| 2103 | Hughes-Leckelt-Maybrier PRDCRS | | Oil Operator | Mar 2022 |
| 2104 | Hughes-Nicklaus Oil Co., LTD. | | Oil & Gas Operator | Feb 1986 |
| 2105 | Hunt Brothers Producing Co Inc | Redding, CA 96049-2516 | Oil & Gas Operator | Sep 2012 |
| 2106 | Hunt Energy Corporation | | Oil & Gas Operator | Feb 2002 |
| 2107 | Hunt Industries, LTD. | Dallas, TX 75201 | Oil & Gas Operator | Nov 2000 |
| 2108 | Hunt Investment Corporation | | Oil & Gas Operator | Jun 1989 |
| 2109 | Hunt Oil Co., Et Al | | Oil & Gas Operator | Nov 1992 |
| 2110 | Hunt Oil Company | Dallas, TX 75201 | Oil & Gas Operator | May 2026 |
| 2111 | Hunt Petroleum (Aec), Inc. | Dallas, TX 75201 | Oil & Gas Operator | Nov 2008 |
| 2112 | Hunt Petroleum Corp. | Dallas, TX 75201 | Oil & Gas Operator | Nov 2008 |
| 2113 | Hunter Oil & Gas, LLC | | Oil & Gas Operator | Oct 2001 |
| 2114 | Huntlyn Operating, LLC | | Oil & Gas Operator | Sep 2022 |
| 2115 | Hurley Oil And Gas Company | | Oil & Gas Operator | Jan 1997 |
| 2116 | Hurley Petroleum Corporation | Baton Rouge, LA 70821 | Oil & Gas Operator | Feb 2000 |
| 2117 | Hurricane Iron & Steel, Inc. | | Oil Operator | Dec 1993 |
| 2118 | Hutson Oil Co. | | Oil & Gas Operator | Nov 2024 |
| 2119 | Hy-Mark Oil & Gas, Inc. | | Oil Operator | Mar 1991 |
| 2120 | Hyatt Exploration, Inc. | | Oil Operator | Jul 1995 |
| 2121 | Hyco Oil Inc | Newcastle, WY 82701 | Oil & Gas Operator | Dec 2006 |
| 2122 | Hydrocarbon MGMT., Inc. | | Oil & Gas Operator | Mar 1997 |
| 2123 | Hyman Muslow | | Oil Operator | Jun 1995 |
| 2124 | Hyperion Energy LP | Dallas, TX 75206 | Oil & Gas Operator | May 2014 |
| 2125 | I. H. Delatte | | Oil & Gas Operator | Jul 1991 |
| 2126 | I. W. McKnight,Production | | Oil Operator | Jan 1986 |
| 2127 | I.G. Petroleum, L.L.C | | Oil & Gas Operator | Dec 2018 |
| 2128 | Iberia Operating Corporation | | Oil & Gas Operator | Jan 2003 |
| 2129 | Idc Energy Corp | Warren, PA 16365-0792 | Oil & Gas Operator | Dec 2021 |
| 2130 | Ike Lovelady, Inc. | | Oil & Gas Operator | Jun 1985 |
| 2131 | Imc Exploration Co. | | Oil & Gas Operator | Oct 1986 |
| 2132 | Imperial-American Energy,Inc. | | Oil & Gas Operator | Jul 1978 |
| 2133 | Inactive Operator | | Oil Operator | Dec 1982 |
| 2134 | Independent Expl Company | | Oil & Gas Operator | Dec 2000 |
| 2135 | Indian Exploration, Inc. | Lafayette, LA 70505 | Oil & Gas Operator | May 2026 |
| 2136 | Indian Oil Company | Gainesville, TX 76241 | Oil & Gas Operator | May 2026 |
| 2137 | Indigo Haynesville LLC | | Gas Operator | Feb 2018 |
| 2138 | Indigo II Louisiana Operating LLC | | Oil & Gas Operator | Feb 2015 |
| 2139 | Indigo Minerals LLC | Houston, TX 77002 | Oil & Gas Operator | Sep 2022 |
| 2140 | Indigo Resources LLC | Houston, TX 77002 | Oil & Gas Operator | Mar 2019 |
| 2141 | Indrex Inc | Tulsa, OK 74133 | Oil & Gas Operator | Dec 2000 |
| 2142 | Inexco Oil Company | Houston, TX 77210 | Oil & Gas Operator | Mar 2013 |
| 2143 | Infinity Oil And Gas, L.L.C. | | Oil & Gas Operator | Dec 2024 |
| 2144 | Inflow Petroleum Resources LP | Dallas, TX 75240 | Oil & Gas Operator | Sep 2008 |
| 2145 | Ingo Energy, LLC | | Oil & Gas Operator | Dec 2016 |
| 2146 | Inland Operating Company | Tulsa, OK 74136 | Oil & Gas Operator | Feb 2026 |
| 2147 | Innovative Resources, Inc. | | Oil Operator | Feb 2022 |
| 2148 | Inpetco, Inc. | | Oil & Gas Operator | Aug 1991 |
| 2149 | Int'L Petr & Expl Opr Corp | | Oil & Gas Operator | Jan 2012 |
| 2150 | Integrated Exploration & Production LLC | | Oil & Gas Operator | Aug 2024 |
| 2151 | Intercoast Oil And Gas Company | Tulsa, OK 74136 | Oil & Gas Operator | Jun 1997 |
| 2152 | Intercoastal Operating Co. | | Oil Operator | Dec 1980 |
| 2153 | International Oil & Gas Corp. | | Oil & Gas Operator | Dec 1986 |
| 2154 | Interstate Explorations LLC | Houston, TX 77010 | Oil & Gas Operator | May 2026 |
| 2155 | Interstate Producing Servs,Inc | | Oil & Gas Operator | May 1987 |
| 2156 | Intrepid Drilling, LLC | | Oil & Gas Operator | Jan 2025 |
| 2157 | Investco Oil And Gas Inc | | Oil & Gas Operator | Jan 2025 |
| 2158 | Investment Trends Corp. | | Gas Operator | Mar 1988 |
| 2159 | Iowa Production Company, Inc. | | Oil & Gas Operator | Jan 1992 |
| 2160 | Ip Petroleum Company, Inc. | Houston, TX 77210 | Oil & Gas Operator | Mar 2008 |
| 2161 | Iron Springs Operating Co. Inc | | Oil & Gas Operator | Jan 2025 |
| 2162 | Irvin Operations, Inc. | | Oil Operator | Aug 1996 |
| 2163 | Irwin H. Parnes | | Oil Operator | Jun 1982 |
| 2164 | Itr Petroleum Inc | Houston, TX 77002 | Oil & Gas Operator | Apr 1998 |
| 2165 | J & A Oil Company | Odessa, TX 79764 | Oil & Gas Operator | May 2026 |
| 2166 | J & B Service Co. | | Oil Operator | Nov 2024 |
| 2167 | J & J Oil Co. | Luling, TX 78648 | Oil & Gas Operator | Mar 2015 |
| 2168 | J & J Onshore Production, Inc. | | Oil & Gas Operator | Feb 2016 |
| 2169 | J & L Oil Company | El Dorado, AR 71730 | Oil Operator | Jan 2025 |
| 2170 | J & M Oil | | Oil Operator | Apr 1994 |
| 2171 | J & P Production | Holdenville, OK 74848-9485 | Oil Operator | Mar 2015 |
| 2172 | J & R Systems, Inc. | | Oil Operator | Apr 2002 |
| 2173 | J & S Production | | Oil Operator | Jan 2025 |
| 2174 | J B Energy, Inc. | Denton, TX 76206 | Oil & Gas Operator | Aug 2018 |
| 2175 | J D Baker | | Oil Operator | Oct 1999 |
| 2176 | J D Briggs, Jr. | | Oil Operator | Mar 1993 |
| 2177 | J D S Oil And Gas | | Oil & Gas Operator | Jan 2025 |
| 2178 | J F & G Production Company | | Oil & Gas Operator | Mar 1989 |
| 2179 | J F D Inc | Houston, TX 77041-6914 | Oil & Gas Operator | Feb 2000 |
| 2180 | J Gould Gardner-West Bullock | | Oil Operator | May 1990 |
| 2181 | J J Oil & Gas | Abilene, TX 79608 | Oil & Gas Operator | Mar 2008 |
| 2182 | J L M Investments, Inc. | | Oil Operator | Jan 1986 |
| 2183 | J L Shoalmire Operating Co Inc | | Oil & Gas Operator | Oct 2013 |
| 2184 | J P Owen . | | Oil & Gas Operator | Mar 1989 |
| 2185 | J P Van Way | | Oil & Gas Operator | Dec 2024 |
| 2186 | J W Briggs Oil Company LLC | | Oil Operator | Sep 2013 |
| 2187 | J&H Oil Company | Gainesville, TX 76240 | Oil & Gas Operator | May 2026 |
| 2188 | J&V Oil Company | | Oil Operator | Dec 2024 |
| 2189 | J-B Swabbing Co. | | Oil & Gas Operator | Jun 1984 |
| 2190 | J-Lu LTD Co | Ashdown, AR 71822 | Oil Operator | Jan 2025 |
| 2191 | J-O'B Operating Company | Shreveport, LA 71135 | Oil & Gas Operator | May 2026 |
| 2192 | J-W Gathering Company | | Oil Operator | Jun 2016 |
| 2193 | J-W Operating Company | Christoval, TX 76935 | Oil & Gas Operator | May 2026 |
| 2194 | J. B. Stafford | | Oil & Gas Operator | Mar 1981 |
| 2195 | J. B. Stafford Et Al | | Oil Operator | Feb 1982 |
| 2196 | J. C. Goodwill | | Oil & Gas Operator | Dec 2024 |
| 2197 | J. C. Hoss | | Oil & Gas Operator | Oct 2024 |
| 2198 | J. D. Briggs | | Oil Operator | Apr 1995 |
| 2199 | J. D. Kemp | | Oil Operator | Aug 1994 |
| 2200 | J. D. Marcom | | Oil Operator | Sep 1989 |