| 101 | Bootstrap Exploration, Inc. | Aledo, TX 76008 | Oil & Gas Operator | Jun 2021 |
| 102 | Borderline Operating Corp. | Graham, TX 76450 | Oil & Gas Operator | May 2025 |
| 103 | Borders, Delbert L. Inc. | Wichita Falls, TX 76307 | Oil & Gas Operator | Feb 2019 |
| 104 | Boss Operating LLC | Graham, TX 76450 | Oil & Gas Operator | May 2025 |
| 105 | Bowie Operating Company, LLC | Graham, TX 76450 | Oil & Gas Operator | Mar 2011 |
| 106 | Boyd, Clyde Oil & Gas | Graham, TX 76450 | Oil & Gas Operator | Jan 2004 |
| 107 | Boydston & Moore | Graham, TX 76450 | Oil & Gas Operator | Apr 2003 |
| 108 | Boydston Operating | Graham, TX 76450 | Oil & Gas Operator | Nov 2006 |
| 109 | Boyle, W. T. | Graham, TX 76450 | Oil & Gas Operator | Dec 2006 |
| 110 | BP Prod. Corp. | Richardson, TX 75083 | Oil & Gas Operator | May 2025 |
| 111 | Bradley, John W. Inc. | Wichita Falls, TX 76301 | Oil & Gas Operator | May 2025 |
| 112 | Brahman Operating LLC | Graham, TX 76450 | Oil & Gas Operator | May 2025 |
| 113 | Brammer Supply Inc | Gainesville, TX 76240 | Oil & Gas Operator | Nov 2014 |
| 114 | Branch Productions | Graham, TX 76450 | Oil & Gas Operator | May 2019 |
| 115 | Breck Operating Corp. | Breckenridge, TX 76424 | Oil & Gas Operator | Feb 2025 |
| 116 | Briarcreek Operating LLC | Graham, TX 76450 | Oil Operator | May 2025 |
| 117 | Bridwell Oil Company | Wichita Falls, TX 76307 | Oil & Gas Operator | May 2025 |
| 118 | Brigham Oil & Gas, L.P. | Austin, TX 78730 | Oil & Gas Operator | Oct 2015 |
| 119 | Brightman Family Trust | Graham, TX 76450 | Oil & Gas Operator | Dec 2009 |
| 120 | Brightman, Tom | Graham, TX 76450 | Oil & Gas Operator | May 2025 |
| 121 | Briscoe, Glenn D. | Jacksboro, TX 76458 | Oil & Gas Operator | Oct 2002 |
| 122 | Britton Operating, Inc. | Aledo, TX 76008 | Oil & Gas Operator | May 2025 |
| 123 | Brock & Strange | Holliday, TX 76366 | Oil & Gas Operator | May 2008 |
| 124 | Brock, Joe Wayne | N Richlnd HLS, TX 76180 | Oil & Gas Operator | Feb 2010 |
| 125 | Brogdon, Gary | Graham, TX 76450 | Oil & Gas Operator | Dec 2009 |
| 126 | Brower Oil & Gas Co., Inc. | Graham, TX 76450 | Oil & Gas Operator | May 2025 |
| 127 | Brower, Robert C. | Fort Worth, TX 76116 | Oil & Gas Operator | May 2025 |
| 128 | Brown, Darryl | Graham, TX 76450 | Oil Operator | Dec 1995 |
| 129 | Brown, Darryl Operating L.L.C. | Graham, TX 76450 | Oil & Gas Operator | May 2025 |
| 130 | Brown, Edmond | Loving, TX 76460 | Oil & Gas Operator | Dec 2017 |
| 131 | Brown, Frank | Graham, TX 76450 | Oil & Gas Operator | Apr 2003 |
| 132 | Brownco Operating Co. | Wichita Falls, TX 76310 | Oil & Gas Operator | May 2025 |
| 133 | Bruce & Creighton | Graham, TX 76450 | Oil & Gas Operator | Apr 2000 |
| 134 | Bruce Operating Account | Graham, TX 76450 | Oil & Gas Operator | Aug 2003 |
| 135 | Bud Oil, Inc. | Duncan, OK 73534 | Oil & Gas Operator | May 2025 |
| 136 | Bulwark Oil & Gas, LLC | Graham, TX 76450 | Oil & Gas Operator | May 2025 |
| 137 | Burgess, Sim E. | Graham, TX 76450 | Oil & Gas Operator | May 2025 |
| 138 | Burgess, W. E. | Fort Worth, TX 76147 | Oil & Gas Operator | May 2025 |
| 139 | Burk Royalty Co., LTD. | Wichita Falls, TX 76308 | Oil & Gas Operator | May 2025 |
| 140 | Burk Royalty Company | Wichita Falls, TX 76308 | Oil & Gas Operator | Jan 2002 |
| 141 | Burns Operating | Wichita Falls, TX 76307 | Oil & Gas Operator | Sep 2002 |
| 142 | Burns Operating LLC | Wichita Falls, TX 76307 | Oil & Gas Operator | Jul 2009 |
| 143 | Bush Operating | Archer City, TX 76351 | Oil & Gas Operator | May 2025 |
| 144 | Butler & Harbison | Olney, TX 76374 | Oil & Gas Operator | Oct 2005 |
| 145 | Byrne, Robert E. | Lubbock, TX 79416 | Oil & Gas Operator | Jan 2005 |
| 146 | C & C Operating, LLC | Iowa Park, TX 76367 | Oil Operator | May 2025 |
| 147 | C & G Transports, Inc. | Woodson, TX 76491 | Oil & Gas Operator | May 2025 |
| 148 | C & M Operating Company | Graham, TX 76450 | Oil & Gas Operator | Feb 2025 |
| 149 | C.O.W. Operating Company | Graham, TX 76450 | Oil Operator | May 2025 |
| 150 | Cabot Oil & Gas Corporation | Houston, TX 77024 | Oil & Gas Operator | Feb 2025 |
| 151 | Caddo Corporation | Austin, TX 78731 | Oil & Gas Operator | May 2025 |
| 152 | Cantrell Oil Co. | Elbert, TX 76359 | Oil & Gas Operator | Aug 2003 |
| 153 | Caribou Operating Co. | Granbury, TX 76048 | Oil & Gas Operator | Mar 2010 |
| 154 | Caribou Operating, Inc. | Granbury, TX 76048 | Oil & Gas Operator | May 2025 |
| 155 | Carter Energy Corporation | Duncanville, TX 75138 | Oil & Gas Operator | Sep 2010 |
| 156 | Cary Oil & Gas, Inc | Decatur, TX 76234 | Oil & Gas Operator | May 2025 |
| 157 | Case Resources, LLC | Graham, TX 76450 | Oil & Gas Operator | May 2025 |
| 158 | Casteel, Hoyt F. | Graham, TX 76450 | Oil & Gas Operator | Nov 2001 |
| 159 | CD Consulting & Operating Co. | Bridgeport, TX 76426 | Oil & Gas Operator | May 2025 |
| 160 | Celero Energy LP | Midland, TX 79701 | Oil & Gas Operator | May 2011 |
| 161 | Central Crude Corp. | Wichita, KS 67206 | Oil Operator | Mar 2014 |
| 162 | CH-Seon Inc. | Dallas, TX 75251 | Oil & Gas Operator | May 2025 |
| 163 | Chance Oil Co., Inc. | Vernon, TX 76385 | Oil & Gas Operator | Mar 2025 |
| 164 | Chardonnay Operating, Inc. | Olney, TX 76374 | Oil & Gas Operator | Dec 1996 |
| 165 | Charis Oil & Gas, LLC | Addison, TX 75001 | Oil & Gas Operator | May 2025 |
| 166 | Chesapeake Operating, Inc. | Oklahoma City, OK 73154 | Oil & Gas Operator | Jan 2025 |
| 167 | Chevron USA Inc | Midland, TX 79706 | Oil & Gas Operator | May 2025 |
| 168 | Chital Petroleum Corp. | Wichita Falls, TX 76308 | Oil & Gas Operator | Feb 2000 |
| 169 | Cholla Petroleum Inc | Dallas, TX 75225 | Oil & Gas Operator | May 2025 |
| 170 | Chroma Operating, Inc. | Washington, DC 20036 | Oil & Gas Operator | Jun 2016 |
| 171 | Cico Oil & Gas Company | Houston, TX 77057 | Oil & Gas Operator | Aug 2019 |
| 172 | Circle Ridge Production, Inc. | Graham, TX 76450 | Oil & Gas Operator | May 2025 |
| 173 | Citori Oil Company | Wichita Falls, TX 76301 | Oil & Gas Operator | Nov 2004 |
| 174 | Citori Oil Company, LLC | Wichita Falls, TX 76308 | Oil & Gas Operator | May 2014 |
| 175 | CJ Tejas Energy, LLC | Pearland, TX 77581 | Oil Operator | May 2025 |
| 176 | CK Operating Company, LLC | Wichita Falls, TX 76308 | Oil Operator | May 2025 |
| 177 | Clark Operating | Wichita Falls, TX 76308 | Oil & Gas Operator | Aug 2003 |
| 178 | Cleo Oil, Inc. | Olney, TX 76374 | Oil & Gas Operator | May 1997 |
| 179 | Cleveland Oil & Gas | Wichita Falls, TX 76308 | Oil Operator | May 2025 |
| 180 | Clifton, B.W. | Graham, TX 76450 | Oil & Gas Operator | Mar 2000 |
| 181 | CLM Operating | Graham, TX 76450 | Oil & Gas Operator | Aug 2017 |
| 182 | Coastal Oil & Gas Corporation | Houston, TX 77252 | Oil & Gas Operator | Dec 2009 |
| 183 | Cobra Oil & Gas Corporation | Wichita Falls, TX 76307 | Oil & Gas Operator | May 2025 |
| 184 | Coda Energy, Inc. | Dallas, TX 75231 | Oil & Gas Operator | Aug 1998 |
| 185 | Coley, Thomas | Graham, TX 76450 | Oil & Gas Operator | May 2025 |
| 186 | Comanche Oil And Gas Company | Brownwood, TX 76801 | Oil & Gas Operator | May 2025 |
| 187 | Con-Lin Oil Co. | Graham, TX 76450 | Oil & Gas Operator | Nov 2017 |
| 188 | Concord Operating Incorporated | Horseshoe Bay, TX 78657 | Oil & Gas Operator | Dec 2008 |
| 189 | Contour Oil & Gas, LLC | Abilene, TX 79602 | Oil & Gas Operator | Dec 2015 |
| 190 | Cooke & Montague Oper. Co., Inc. | Flower Mound, TX 75028 | Oil & Gas Operator | May 2025 |
| 191 | Cooper Oil & Gas, Inc. | Fort Worth, TX 76102 | Oil & Gas Operator | May 2010 |
| 192 | Cooper Oil & Gas, LLC | Fort Worth, TX 76107 | Oil & Gas Operator | May 2025 |
| 193 | Cooper Operating | Olney, TX 76374 | Oil Operator | Apr 2007 |
| 194 | Corda Corporation | Wichita Falls, TX 76302 | Oil & Gas Operator | May 2025 |
| 195 | Corpening, Joe F. | Bowie, TX 76230 | Oil & Gas Operator | Oct 2013 |
| 196 | Cottonwood Petroleum Co. | Abilene, TX 79603 | Oil & Gas Operator | Jun 2009 |
| 197 | Covenant Oil Company | Houma, LA 70360 | Oil & Gas Operator | Dec 2015 |
| 198 | Covenant Operating, LLC | Wichita Falls, TX 76308 | Oil Operator | May 2025 |
| 199 | Craft Resources, Inc. | Weston, TX 75097 | Oil & Gas Operator | Aug 2003 |
| 200 | Craig, Bob | Olney, TX 76374 | Oil & Gas Operator | May 2025 |