| 101 | Daylight Petroleum LLC | Houston, TX 77052 | Oil & Gas Operator | Dec 2025 |
| 102 | Del Rio Production Co. | Gainesville, TX 76240 | Oil Operator | Mar 2019 |
| 103 | Denton Exploration, Inc. | Dallas, TX 75219 | Oil & Gas Operator | Dec 2025 |
| 104 | Dimock Operating Company | Frisco, TX 75034 | Oil & Gas Operator | Dec 2025 |
| 105 | Doolaree Corporation | Sherman, TX 75091 | Oil & Gas Operator | Dec 2025 |
| 106 | Dry Creek Operating, LLC | Fort Worth, TX 76109 | Oil & Gas Operator | Dec 2025 |
| 107 | DSB Energy, LLC | The Woodlands, TX 77380 | Oil & Gas Operator | Dec 2025 |
| 108 | Dynamic Production, Inc. | Fort Worth, TX 76102 | Oil & Gas Operator | Dec 2025 |
| 109 | Eagle Oil & Gas Co. | Dallas, TX 75225 | Oil & Gas Operator | Dec 2025 |
| 110 | Eagleridge Operating, LLC | Dallas, TX 75219 | Oil & Gas Operator | Dec 2025 |
| 111 | Ebs Oil & Gas Partners Op.Co.,LP | Dallas, TX 75219 | Oil & Gas Operator | May 2006 |
| 112 | Eland Energy Inc | Dallas, TX 75248 | Oil & Gas Operator | Oct 2025 |
| 113 | Eldred Prod And Consulting, LLC | Nocona, TX 76255 | Oil Operator | Dec 2025 |
| 114 | Eleon Operators, LLC | Katy, TX 77494 | Oil & Gas Operator | Dec 2025 |
| 115 | Elson Oil Company | Tulsa, OK 74103-4429 | Oil & Gas Operator | Dec 2016 |
| 116 | Empire Oil Company | Coppell, TX 75019 | Oil & Gas Operator | Dec 2025 |
| 117 | Encana Oil & Gas (USA) Inc. | Denver, CO 80202 | Oil & Gas Operator | Oct 2020 |
| 118 | Encore Energy, Inc. | Gainesville, TX 76241 | Oil & Gas Operator | Mar 2015 |
| 119 | Energy Production Corporation | Kilgore, TX 75663 | Oil & Gas Operator | Dec 2025 |
| 120 | Energy Transfer Crude Marketing LLC | Dallas, TX 75225 | Oil Operator | Sep 2025 |
| 121 | Enervest Operating LLC | Houston, TX 77002 | Oil & Gas Operator | Dec 2025 |
| 122 | Enexco, Inc. | Dallas, TX 75243 | Oil & Gas Operator | Mar 2017 |
| 123 | Enron Oil & Gas Company | Houston, TX 77210 | Oil & Gas Operator | Dec 1999 |
| 124 | EOG Resources Inc | Midland, TX 79702 | Oil & Gas Operator | Dec 2025 |
| 125 | Esp Energy, LLC | Nocona, TX 76255 | Oil Operator | Dec 2025 |
| 126 | Fagadau Energy Corporation | Dallas, TX 75206 | Oil & Gas Operator | Apr 2006 |
| 127 | Felderhoff Production Company | Muenster, TX 76252 | Oil & Gas Operator | Dec 2025 |
| 128 | Fidelity Energy Co. | Gainesville, TX 76241 | Oil & Gas Operator | Apr 2008 |
| 129 | FJH Oil Company | Muenster, TX 76252 | Oil & Gas Operator | Dec 2025 |
| 130 | Ford, R. J. Inc. | Wichita Falls, TX 76301 | Oil & Gas Operator | Dec 2025 |
| 131 | Fortson Oil Company | Fort Worth, TX 76102 | Oil & Gas Operator | Jun 2020 |
| 132 | Four Kin Oil Co | Muenster, TX 76252 | Oil & Gas Operator | Dec 2001 |
| 133 | Fuller Petroleum Inc | Midland, TX 79702 | Oil & Gas Operator | Mar 2008 |
| 134 | G N K Inc. | Shreveport, LA 71101 | Oil & Gas Operator | Aug 2020 |
| 135 | General Atlantic Resources Inc | Denver, CO 80202 | Oil & Gas Operator | Jan 2022 |
| 136 | Geurin Oil & Gas | Saint Jo, TX 76265 | Oil & Gas Operator | Oct 2022 |
| 137 | Gibbs, Loyd Leasing | Gainesville, TX 76240 | Oil & Gas Operator | Aug 2007 |
| 138 | Gilbreath Tank Trucks, Inc. | Whitesboro, TX 76273 | Oil Operator | Dec 2025 |
| 139 | Gordon Oil Company, Inc. | Sherman, TX 75090 | Oil & Gas Operator | Oct 2004 |
| 140 | Grayson Petroleum Company | Whitesboro, TX 76273 | Oil & Gas Operator | Dec 2025 |
| 141 | Great West Operating Co., Inc. | Dallas, TX 75240 | Oil & Gas Operator | Aug 2003 |
| 142 | Grewing, Florence T. | Muenster, TX 76252 | Oil & Gas Operator | Mar 2008 |
| 143 | Grewing, Herman | Muenster, TX 76252 | Oil & Gas Operator | Apr 1997 |
| 144 | Grewing, Herman Operating, Inc. | Muenster, TX 76252 | Oil Operator | Dec 2025 |
| 145 | Grewing, Wayne R. Oil & Gas, LLC | Muenster, TX 76252 | Oil Operator | Apr 2018 |
| 146 | Gross, Charles E. | Dallas, TX 75220 | Oil & Gas Operator | Feb 2012 |
| 147 | Gruy Petroleum Management Co. | Irving, TX 75014 | Oil & Gas Operator | Nov 2014 |
| 148 | Guffey, Roy, Oil Company | Dallas, TX 75206 | Oil & Gas Operator | Aug 2011 |
| 149 | Gypsy Oil Co. | Austin, TX 78720 | Oil & Gas Operator | Jul 2017 |
| 150 | H & H Production Company | Muenster, TX 76252 | Oil & Gas Operator | Oct 2005 |
| 151 | H & S Production, Inc. | Dallas, TX 75252 | Oil & Gas Operator | Mar 2004 |
| 152 | H.L. Clark Oil Company LLC | Whitesboro, TX 76273 | Oil Operator | Dec 2025 |
| 153 | Hacker Brothers Oil Company, Inc | Muenster, TX 76252 | Oil & Gas Operator | May 2004 |
| 154 | Hacker Brothers Well Service,Inc | Muenster, TX 76252 | Oil & Gas Operator | Dec 2025 |
| 155 | Hacker, Freddie J. | Muenster, TX 76252 | Oil & Gas Operator | Dec 2012 |
| 156 | Hadley Oil | Nocona, TX 76255 | Oil Operator | Jan 2014 |
| 157 | Hadley Oil Company, LLC | Nocona, TX 76255 | Oil Operator | Dec 2025 |
| 158 | Hall Energy Company LLC | Oklahoma City, OK 73120-5020 | Oil & Gas Operator | Jul 2022 |
| 159 | Hamilton Brothers Oil Co. | Houston, TX 77057 | Oil & Gas Operator | Mar 2015 |
| 160 | Hane Operating, Inc. | Santa Anna, TX 76878 | Oil & Gas Operator | Sep 2005 |
| 161 | Harper, Wayne | Dallas, TX 75206 | Oil & Gas Operator | Mar 2008 |
| 162 | Haverkamp, Floyd | Muenster, TX 76252 | Oil & Gas Operator | Oct 2001 |
| 163 | Hawkeye Transmission Company | Dallas, TX 75244 | Oil & Gas Operator | Jun 2000 |
| 164 | Heape Exploration, Inc. | Dallas, TX 75367 | Oil & Gas Operator | Dec 2020 |
| 165 | Heape, Gene G. | Dallas, TX 75367 | Oil & Gas Operator | Jun 2003 |
| 166 | Helmerich & Payne, Inc. | Tulsa, OK 74114 | Oil & Gas Operator | Sep 2025 |
| 167 | Henley Operating | Nocona, TX 76255 | Oil & Gas Operator | Dec 2025 |
| 168 | Henscheid, Rufus | Muenster, TX 76252 | Oil Operator | Jan 2020 |
| 169 | Hep Oil Company, LTD. | Gainesville, TX 76240 | Oil & Gas Operator | Mar 2012 |
| 170 | Hep Oil GP, LLC | Gainesville, TX 76241 | Oil & Gas Operator | Mar 2015 |
| 171 | Heritage Petroleum, Inc. | Stillwater, OK 74076 | Oil & Gas Operator | Dec 2025 |
| 172 | Hermes, A. J. | Lindsay, TX 76250 | Oil & Gas Operator | Mar 2018 |
| 173 | Herv Oil, LLC | Oklahoma City, OK 73116 | Oil Operator | Sep 2025 |
| 174 | Hess Bros. DRLG. Co. | Gainesville, TX 76240 | Oil & Gas Operator | Mar 2008 |
| 175 | Hess, Jerry Operating Co. | Muenster, TX 76252 | Oil & Gas Operator | Dec 2025 |
| 176 | Houtchens, D. D. | Gainesville, TX 76240 | Oil & Gas Operator | Dec 2025 |
| 177 | Houtchens, DD & Anna D LVNG TRST | Garland, TX 75043 | Oil Operator | Jun 2025 |
| 178 | Howard Operating Co. | Saint Jo, TX 76265 | Oil & Gas Operator | Dec 2025 |
| 179 | Huber J M Corp | Edison, NJ 08837 | Oil & Gas Operator | Dec 2025 |
| 180 | HWH Production, LLC | Muenster, TX 76252 | Oil Operator | Dec 2025 |
| 181 | Ijs Oil | Saint Jo, TX 76265 | Oil & Gas Operator | Dec 2025 |
| 182 | Imperial Oil Company | Houston, TX 77073 | Oil & Gas Operator | Oct 2004 |
| 183 | Indian Oil Company | Gainesville, TX 76241 | Oil & Gas Operator | Dec 2025 |
| 184 | International Ventures Inc | Pogasa Springs, CO 81147 | Oil Operator | Jul 1996 |
| 185 | Itx Corporation | Dallas, TX 75225 | Oil & Gas Operator | Dec 2025 |
| 186 | J R Co. Of Muenster, LLC | Muenster, TX 76252 | Oil Operator | Dec 2025 |
| 187 | J&H Oil Company | Gainesville, TX 76240 | Oil & Gas Operator | Dec 2025 |
| 188 | J.S.B. Oil Company | Hallettsville, TX 77964 | Oil & Gas Operator | Dec 2025 |
| 189 | Jaco, Troy Inc. | Sherman, TX 75091 | Oil & Gas Operator | Dec 2025 |
| 190 | Jet-Star Co. | Gainesville, TX 76240 | Oil & Gas Operator | Dec 2025 |
| 191 | Jetta Operating Company, Inc. | Fort Worth, TX 76102 | Oil & Gas Operator | Dec 2025 |
| 192 | Joint Resources Company | Fort Worth, TX 76107 | Oil & Gas Operator | Dec 2025 |
| 193 | Jojon Petroleum Company | Dallas, TX 75219 | Oil & Gas Operator | Sep 2025 |
| 194 | Jones Energy, LLC | Oklahoma City, OK 73134 | Oil & Gas Operator | Oct 2025 |
| 195 | Jones Energy, LTD. | Austin, TX 78746 | Oil & Gas Operator | Sep 2013 |
| 196 | Jones, L. E. Operating, Inc. | Duncan, OK 73534 | Oil & Gas Operator | Dec 2025 |
| 197 | Jones, L. E. Production Co. | Duncan, OK 73534 | Oil & Gas Operator | Jul 2014 |
| 198 | Kaiser-Francis Oil Company | Tulsa, OK 74121 | Oil & Gas Operator | Dec 2025 |
| 199 | Kalda Company | Wichita Falls, TX 76307 | Oil & Gas Operator | Dec 1994 |
| 200 | Kaler Oil Company | Gainesville, TX 76240 | Oil & Gas Operator | Dec 2024 |