| 101 | Gravtro, Inc. | | Oil Operator | Apr 1986 |
| 102 | Great Southern Oil &Gas Co Inc | | Oil & Gas Operator | Dec 2004 |
| 103 | Griffin Southern Corp. | | Oil & Gas Operator | Jun 1983 |
| 104 | Grogan Field Production, L.L.C. | | Oil Operator | Jan 2025 |
| 105 | Grynberg Petroleum Company | Greenwood Vge, CO 80111-3326 | Oil & Gas Operator | Oct 2019 |
| 106 | Guardian Oil Company | | Oil & Gas Operator | Aug 1985 |
| 107 | Guernsey Petroleum Corporation | Atlanta, GA 30318 | Oil & Gas Operator | Nov 1997 |
| 108 | H & B Well Service, Inc. | | Oil & Gas Operator | Aug 1993 |
| 109 | H. E. Sutton | | Oil & Gas Operator | Jan 1990 |
| 110 | Hallmark Oil And Gas Co., Inc. | | Oil & Gas Operator | Dec 2024 |
| 111 | Herbst Resources, Inc. | Mandeville, LA 70448 | Oil & Gas Operator | Aug 2003 |
| 112 | High-Hope Oil And Gas, Inc | | Oil & Gas Operator | Mar 2017 |
| 113 | Hope Oil Inc | Midland, TX 79702 | Oil & Gas Operator | Oct 2021 |
| 114 | Horton & Freeman | | Oil Operator | Apr 1983 |
| 115 | Hsumy Oil & Gas Inc | Oklahoma City, OK 73102 | Oil & Gas Operator | Apr 2007 |
| 116 | Hurricane Iron & Steel, Inc. | | Oil Operator | Dec 1993 |
| 117 | Indigo Haynesville LLC | | Gas Operator | Feb 2018 |
| 118 | Indigo Minerals LLC | Houston, TX 77002 | Oil & Gas Operator | Sep 2022 |
| 119 | Inland Operating Company | Tulsa, OK 74136 | Oil & Gas Operator | Apr 2026 |
| 120 | J D S Oil And Gas | | Oil & Gas Operator | Jan 2025 |
| 121 | J L Shoalmire Operating Co Inc | | Oil & Gas Operator | Oct 2013 |
| 122 | J-W Operating Company | Christoval, TX 76935 | Oil & Gas Operator | Sep 2026 |
| 123 | J. O. Kimbrell, Jr. | | Oil & Gas Operator | Dec 1992 |
| 124 | J. T. Bierden, Jr. | | Oil Operator | Feb 1993 |
| 125 | Jack T. Everett | | Oil & Gas Operator | Jan 2006 |
| 126 | Jacky G. Rivers | | Oil & Gas Operator | Jan 2025 |
| 127 | Jay Development Corporation | Dallas, TX 75420 | Oil & Gas Operator | Jun 1992 |
| 128 | Jeems Bayou Production Corp. | Oil City, LA 71061 | Oil & Gas Operator | Sep 2026 |
| 129 | Jerry Malmay | | Oil Operator | Aug 2011 |
| 130 | Jerry R. Craig | | Oil & Gas Operator | Dec 2012 |
| 131 | Jim Joel Elliott | | Oil Operator | Nov 1999 |
| 132 | Jim-Co Drilling Et Al | | Oil & Gas Operator | Mar 1991 |
| 133 | Johnson & Johnson Operating, Inc. | | Oil & Gas Operator | Jan 2025 |
| 134 | Josey Exploration, Inc. | | Oil & Gas Operator | Dec 1988 |
| 135 | JPM Petroleum, Inc. | | Oil Operator | May 1986 |
| 136 | JWR Exploration Inc. | | Oil & Gas Operator | Jul 1989 |
| 137 | Kanpetro, Inc. | | Oil Operator | May 1991 |
| 138 | Kings Oil Company, Inc. | | Oil Operator | Jun 1989 |
| 139 | Knight Exploration, Inc. | | Oil & Gas Operator | Sep 1989 |
| 140 | Legend Fund, LLC | | Oil & Gas Operator | Jan 2025 |
| 141 | Leo Windham | | Oil Operator | Jul 1992 |
| 142 | Liberty Exploration Co. | | Oil Operator | Apr 1987 |
| 143 | Llog Expl. Co.-Biggs | | Oil Operator | Sep 1985 |
| 144 | Logue And Patterson, Inc. | | Oil & Gas Operator | Nov 1991 |
| 145 | Long Oil And Gas Expl., LTD | | Oil & Gas Operator | Apr 1988 |
| 146 | Long Operating, L.L.C. | Shreveport, LA 71166 | Oil & Gas Operator | Jun 2006 |
| 147 | LVW, Inc. | | Oil & Gas Operator | Dec 2024 |
| 148 | Mallard Drilling Corp. | | Oil & Gas Operator | Jan 1993 |
| 149 | Manorado Oil Company | | Oil Operator | Feb 1999 |
| 150 | Mantle Oil & Gas, LLC | Friendswood, TX 77546 | Oil & Gas Operator | Sep 2026 |
| 151 | Maroski, Inc. | | Oil Operator | Jan 1989 |
| 152 | Marshall Exploration, Inc. | | Oil & Gas Operator | Jun 1992 |
| 153 | Martin Oil Co. | Aspermont, TX 79502 | Oil & Gas Operator | Jul 2023 |
| 154 | Mega Drilling Company | | Oil Operator | Feb 1984 |
| 155 | Midla, LTD. | | Oil & Gas Operator | Jun 1990 |
| 156 | Midland Workover, Inc. | | Oil & Gas Operator | Dec 2024 |
| 157 | Midwest Energy Companies, Inc. | | Oil & Gas Operator | Feb 1998 |
| 158 | Mil-Cro Inc. | | Oil Operator | Jan 1994 |
| 159 | MJ Energy LLC | Denver, CO 80206 | Oil Operator | Jan 2025 |
| 160 | Monroe Well Serv-Omega 1985 | | Oil Operator | Dec 1988 |
| 161 | Monroe Well Service-East End | | Oil Operator | Dec 1988 |
| 162 | Monroe Well Service-Sla | | Oil Operator | Mar 1989 |
| 163 | Monroe Well Service-Tpa 1985 | | Oil Operator | Dec 1990 |
| 164 | Moran Exploration, Inc. | | Oil & Gas Operator | Jan 1985 |
| 165 | Mrs. Cecile Andries & Sons | | Oil Operator | Dec 2006 |
| 166 | MRT Exploration Co | | Oil & Gas Operator | Feb 1983 |
| 167 | Nabors Drilling Company, Inc. | | Oil & Gas Operator | Sep 1977 |
| 168 | Nabors-Johnson Prod Co., Inc. | | Oil & Gas Operator | Dec 2020 |
| 169 | Norco Development, Inc. | | Oil Operator | Jul 1994 |
| 170 | Northern Energy Management | | Oil & Gas Operator | Nov 2019 |
| 171 | O. B. Mobley | | Oil & Gas Operator | Jul 1989 |
| 172 | Occidental Energy Company, Inc. | Houston, TX 77282 | Oil & Gas Operator | Jul 2021 |
| 173 | Odyssey Operating Company | | Oil & Gas Operator | Sep 2020 |
| 174 | Olympic Oil & Gas Co., Inc. | | Oil Operator | Apr 1991 |
| 175 | Oryx Energy Company | Dallas, TX 75221 | Oil & Gas Operator | May 2002 |
| 176 | Oxford Exploration Company | Denver, CO 80237 | Oil & Gas Operator | Aug 1995 |
| 177 | Paloma Natural Gas, LLC | Houston, TX 77002 | Oil & Gas Operator | Dec 2024 |
| 178 | Park Exploration Inc | | Oil & Gas Operator | Nov 2012 |
| 179 | Perkins Oil Properties | | Oil & Gas Operator | Nov 2024 |
| 180 | Petrohawk Operating Company | Houston, TX 77056 | Oil & Gas Operator | Oct 2021 |
| 181 | Phillips Petroleum Company | Houston, TX 77251 | Oil & Gas Operator | Mar 2013 |
| 182 | Pinnacle Operating Company, Inc. | Shreveport, LA 71135 | Oil & Gas Operator | Sep 2026 |
| 183 | Pride Exploration, Inc. | Shreveport, LA 71101 | Oil & Gas Operator | Jul 2015 |
| 184 | Procell & Procell | | Oil & Gas Operator | Jan 2003 |
| 185 | Pyramid Petroleum, Inc. | | Oil & Gas Operator | May 1992 |
| 186 | Quest Energies | | Oil & Gas Operator | Mar 1997 |
| 187 | Quest Energies Group,LTD. | Shreveport, LA 71106 | Oil & Gas Operator | Mar 1997 |
| 188 | Quest Energies, L.L.C. | | Oil & Gas Operator | Jan 2025 |
| 189 | R. & R. Exploration, Inc. | Denton, TX 76202 | Oil Operator | Nov 1993 |
| 190 | R. Pannell Oil Company | Kilgore, TX 75663 | Oil Operator | Jan 2025 |
| 191 | Raybo, Inc. | | Oil Operator | Dec 1990 |
| 192 | Rayford Exploration | | Oil Operator | Feb 1984 |
| 193 | Rebel Enterprises, Inc. | | Oil Operator | Dec 1991 |
| 194 | Remuda Oil & Gas Corp. | | Oil & Gas Operator | Aug 1987 |
| 195 | Richard Nelson | | Oil Operator | Feb 1987 |
| 196 | River Rouge Minerals Inc | | Oil & Gas Operator | Mar 1981 |
| 197 | Robert A Craig | | Oil Operator | Jul 2020 |
| 198 | Robert K. Freeman | | Oil Operator | Jul 1991 |
| 199 | Roger Wilson | | Oil Operator | Apr 2002 |
| 200 | Roger Wilson, Inc. | | Oil Operator | Jul 2019 |