| 101 | D & D Well Service, L.L.C. | Post, TX 79356 | Oil Operator | May 2025 |
| 102 | Dakota Resources, Inc. (I) | Midland, TX 79707 | Oil & Gas Operator | May 2025 |
| 103 | Dallas Production, Inc. | Dallas, TX 75206 | Oil & Gas Operator | Mar 2021 |
| 104 | Das Oil Co. L.L.C. | Post, TX 79356 | Oil Operator | May 2025 |
| 105 | Devon Energy Corp (Nevada) | Oklahoma City, OK 73102 | Oil & Gas Operator | Feb 2017 |
| 106 | Devon Energy Production Company LP | Oklahoma City, OK 73102 | Oil & Gas Operator | May 2025 |
| 107 | Di Energy Inc. | Houston, TX 77067 | Oil & Gas Operator | Jan 2004 |
| 108 | Dinero Operating Co | Midland, TX 79702 | Oil & Gas Operator | May 2025 |
| 109 | Discovery Operating Inc | Midland, TX 79705 | Oil & Gas Operator | May 2025 |
| 110 | Dodson, Wayne Consultants, Inc. | Snyder, TX 79549 | Oil & Gas Operator | Jul 2003 |
| 111 | Dorado Oil Company | Corpus Chrsti, TX 78403 | Oil & Gas Operator | Oct 2013 |
| 112 | Draco Energy, Inc. | Midland, TX 79701 | Oil & Gas Operator | May 2025 |
| 113 | Duke, M. L. | Snyder, TX 79549 | Oil & Gas Operator | Mar 2008 |
| 114 | Durham, Inc. | Midland, TX 79701 | Oil & Gas Operator | Jul 2016 |
| 115 | Eagle Oil & Gas Co. | Dallas, TX 75225 | Oil & Gas Operator | May 2025 |
| 116 | Encore Energy, Inc. | Gainesville, TX 76241 | Oil & Gas Operator | Mar 2015 |
| 117 | Endeavor Energy Resources, LP | Midland, TX 79701 | Oil & Gas Operator | May 2025 |
| 118 | Energy 2000, Inc. | Reno, NV 89501 | Oil & Gas Operator | May 2025 |
| 119 | Energy Resources Oil & Gas Corp. | Amarillo, TX 79102 | Oil & Gas Operator | Jun 1994 |
| 120 | Energy Transfer Crude Marketing LLC | Dallas, TX 75225 | Oil Operator | Jan 2025 |
| 121 | Enervest Operating LLC | Houston, TX 77002 | Oil & Gas Operator | May 2025 |
| 122 | Enserch Exploration Inc | Dallas, TX 75206 | Oil & Gas Operator | Apr 2015 |
| 123 | EP Energy E&P Company, LP | Houston, TX 77210 | Oil & Gas Operator | May 2022 |
| 124 | Estoril Producing Corporation | Midland, TX 79701 | Oil & Gas Operator | Apr 1994 |
| 125 | Extex Operating Company | Houston, TX 77057 | Oil & Gas Operator | May 2025 |
| 126 | Exxon Corporation | Houston, TX 77210 | Oil & Gas Operator | Jun 2024 |
| 127 | Exxon Mobil Corporation | Spring, TX 77389 | Oil & Gas Operator | May 2025 |
| 128 | Fagadau Energy Corporation | Dallas, TX 75206 | Oil & Gas Operator | Apr 2006 |
| 129 | Fair Oil, LTD. | Tyler, TX 75710 | Oil & Gas Operator | May 2025 |
| 130 | Fasken Oil And Ranch, LTD. | Midland, TX 79707 | Oil & Gas Operator | May 2025 |
| 131 | Fasken, Barbara | Midland, TX 79701 | Oil & Gas Operator | Dec 1995 |
| 132 | Fenn, Bill Inc. | Giddings, TX 78942 | Oil & Gas Operator | Mar 2008 |
| 133 | Fields, Bert, Jr. | Dallas, TX 75230 | Oil & Gas Operator | Apr 2015 |
| 134 | Fina Oil And Chemical Company | Dallas, TX 75221 | Oil & Gas Operator | May 2019 |
| 135 | First Permian, L.L.C. | Midland, TX 79702 | Oil & Gas Operator | Mar 2008 |
| 136 | Flat Top Operating, LLC | Midland, TX 79707 | Oil & Gas Operator | May 2025 |
| 137 | Fletcher Petroleum Corp. | Fairhope, AL 36533 | Oil & Gas Operator | Feb 2025 |
| 138 | Forest Oil Permian Corporation | Houston, TX 77002 | Oil & Gas Operator | Mar 2015 |
| 139 | Fortson Oil Company | Fort Worth, TX 76102 | Oil & Gas Operator | Jun 2020 |
| 140 | Fredonia Resources Inc. | Longview, TX 75606 | Oil & Gas Operator | Aug 2003 |
| 141 | Frost,Cyrus B.,Jr.& Fleming, WM. | Eastland, TX 76448 | Oil & Gas Operator | May 2004 |
| 142 | Fuller Petroleum Inc | Midland, TX 79702 | Oil & Gas Operator | Mar 2008 |
| 143 | Fultz Oil Company | Fort Worth, TX 76121 | Oil & Gas Operator | Dec 1995 |
| 144 | G.P.C. Oil And Gas Corporation | Midland, TX 79710 | Oil & Gas Operator | Feb 1993 |
| 145 | Gaea Services, Inc. | San Antonio, TX 78216 | Oil & Gas Operator | Sep 2021 |
| 146 | Gecko | Dallas, TX 75205 | Oil & Gas Operator | Mar 2008 |
| 147 | Geomark Resources, L.L.C. | Lubbock, TX 79453 | Oil & Gas Operator | May 2025 |
| 148 | Goodie Interests | Kilgore, TX 75663 | Oil Operator | May 2025 |
| 149 | Goodrich, John S. | Midland, TX 79705 | Oil & Gas Operator | Sep 1996 |
| 150 | Graham Royalty LTD | Covington, LA 70434 | Oil & Gas Operator | Jul 2007 |
| 151 | Gray, Gordon Operator | Snyder, TX 79550 | Oil & Gas Operator | May 2025 |
| 152 | Great Western Drilling Co | Midland, TX 79701 | Oil & Gas Operator | May 2025 |
| 153 | Gruy Petroleum Management Co. | Irving, TX 75014 | Oil & Gas Operator | Nov 2014 |
| 154 | GTG Operating, LLC | Tyler, TX 75702 | Oil & Gas Operator | May 2025 |
| 155 | Gunn Oil Company | Wichita Falls, TX 76307 | Oil & Gas Operator | May 2025 |
| 156 | Guthrie, A. K. Operating Co. | Big Spring, TX 79720 | Oil & Gas Operator | Mar 1996 |
| 157 | H & S Drilling Co Inc | Frazeysburg, OH 43822-0040-0040 | Oil & Gas Operator | Dec 2016 |
| 158 | Hair, Roger D. | Post, TX 79356 | Oil & Gas Operator | May 2025 |
| 159 | Hall Energy Company LLC | Oklahoma City, OK 73120-5020 | Oil & Gas Operator | Jul 2022 |
| 160 | Halvey Energy Co. | Midland, TX 79702 | Oil & Gas Operator | Oct 2004 |
| 161 | Halvey Energy, LLC | Midland, TX 79702 | Oil & Gas Operator | May 2025 |
| 162 | Hamman Oil & Refining Company | Houston, TX 77098 | Oil & Gas Operator | May 2025 |
| 163 | Hannathon Petroleum, LLC | Midland, TX 79705 | Oil & Gas Operator | May 2025 |
| 164 | Hanson Corporation | New Braunfels, TX 78132 | Oil & Gas Operator | Mar 2008 |
| 165 | Harken Exploration Company | Houston, TX 77079 | Oil & Gas Operator | Mar 2008 |
| 166 | Hartoil Corporation | Post, TX 79356 | Oil & Gas Operator | May 2025 |
| 167 | Hat Oil & Gas, Inc. | Slaton, TX 79364 | Oil & Gas Operator | Feb 2002 |
| 168 | Heinrich Production Co Inc | Lubbuck, TX 79424 | Oil Operator | Dec 2024 |
| 169 | Hendrix, John H. Corporation | Midland, TX 79705 | Oil & Gas Operator | Sep 2018 |
| 170 | Henson Exploration, L.P. | Abilene, TX 79608 | Oil & Gas Operator | May 2025 |
| 171 | Heritage Resources, Inc. | Dallas, TX 75219 | Oil & Gas Operator | Feb 2014 |
| 172 | Hexp Operating, LLC | Midland, TX 79705 | Oil & Gas Operator | May 2025 |
| 173 | Hi - Mountain Energy Corporation | Odessa, TX 79762 | Oil & Gas Operator | May 2025 |
| 174 | Houston Oil & Minerals Corp. | Houston, TX 77002 | Oil & Gas Operator | Aug 1996 |
| 175 | Hrubetz Oil Co. | Dallas, TX 75225 | Oil Operator | Sep 1986 |
| 176 | Hrubetz Operating Company | Dallas, TX 75225 | Oil & Gas Operator | Feb 1999 |
| 177 | Huber J M Corp | Edison, NJ 08837 | Oil & Gas Operator | May 2025 |
| 178 | Hughes Oil Company Inc | Odessa, TX 79765 | Oil & Gas Operator | Feb 2004 |
| 179 | Hunt Oil Company | Dallas, TX 75201 | Oil & Gas Operator | May 2025 |
| 180 | Hyperion Oil & Gas LLC | Dallas, TX 75251 | Oil & Gas Operator | May 2025 |
| 181 | Ica Energy Operating, L.L.C. | Odessa, TX 79760 | Oil & Gas Operator | May 2025 |
| 182 | International Ventures, Inc. | Pogasa Springs, CO 81147 | Oil Operator | Jul 1996 |
| 183 | Ip Petroleum Company, Inc. | Houston, TX 77210 | Oil & Gas Operator | Mar 2008 |
| 184 | Ipact | Austin, TX 78734 | Oil & Gas Operator | May 2025 |
| 185 | J. B. Oil Limited L. C. | Colorado SPGS, CO 80906 | Oil & Gas Operator | Apr 1995 |
| 186 | Jackson, Neil A. | Snyder, TX 79549 | Oil & Gas Operator | Dec 1993 |
| 187 | Jasmar Oil Co. | Levelland, TX 79336 | Oil & Gas Operator | Mar 2008 |
| 188 | JD Oil Company | Longview, TX 75605 | Oil & Gas Operator | Sep 2014 |
| 189 | Jla Resources Company | Austin, TX 78746 | Oil & Gas Operator | May 2025 |
| 190 | JMK Petroleum Corp. | Dallas, TX 75251 | Oil & Gas Operator | Jun 2006 |
| 191 | Judah Oil | Artesia, NM 88211 | Oil & Gas Operator | Mar 2010 |
| 192 | Jva Operating Company | Midland, TX 79710 | Oil & Gas Operator | Oct 2021 |
| 193 | K.W.A., Inc. | Midland, TX 79702 | Oil & Gas Operator | May 2025 |
| 194 | Kaiser-Francis Oil Company | Tulsa, OK 74121 | Oil & Gas Operator | May 2025 |
| 195 | Kerr-McGee Corporation | Dallas, TX 75380 | Oil & Gas Operator | Mar 2025 |
| 196 | Kerr-McGee Oil & Gas Onshore LLC | The Woodlands, TX 77380 | Oil & Gas Operator | Feb 2017 |
| 197 | Kerry Petroleum Co Inc | Midland, TX 79708 | Oil & Gas Operator | Jun 2010 |
| 198 | Kidd Oil & Gas, LC | Dallas, TX 75219 | Oil & Gas Operator | Apr 1999 |
| 199 | Kinder Morgan Production Co LLC | Midland, TX 79705 | Oil & Gas Operator | May 2025 |
| 200 | Knox Industries, Inc. | Arlington, TX 76012 | Oil & Gas Operator | May 2025 |