| 101 | Brown Tom Inc | Dallas, TX 75240 | Oil & Gas Operator | Mar 2015 |
| 102 | Brown, H.L. Operating, L.L.C. | Midland, TX 79702 | Oil & Gas Operator | May 2025 |
| 103 | Bta Oil Producers | Midland, TX 79701 | Oil & Gas Operator | Sep 2009 |
| 104 | Bta Oil Producers, LLC | Midland, TX 79701 | Oil & Gas Operator | May 2025 |
| 105 | Buchanan, Billy R. | Coahoma, TX 79511 | Oil & Gas Operator | May 2025 |
| 106 | Burlington Resources Oil And Gas Co. | Houston, TX 77210 | Oil & Gas Operator | Mar 2023 |
| 107 | Bustamante Oil Company | Midland, TX 79710 | Oil & Gas Operator | May 2025 |
| 108 | Buttram Energies Inc | Oklahoma City, OK 73112-7235 | Oil & Gas Operator | Nov 2021 |
| 109 | Byrd Operating Company | Midland, TX 79702 | Oil & Gas Operator | May 2025 |
| 110 | Cadence Energy Partners, LLC | Blanchard, OK 73010 | Oil & Gas Operator | Jun 2010 |
| 111 | Calley, Bob | Midland, TX 79702 | Oil & Gas Operator | Aug 2003 |
| 112 | Callon Petroleum Operating Co | Houston, TX 77042 | Oil & Gas Operator | Jul 2024 |
| 113 | Cambrian Management LTD | McCaulley, TX 79534 | Oil & Gas Operator | May 2025 |
| 114 | Campana Petroleum Company | Midland, TX 79705 | Oil & Gas Operator | May 2025 |
| 115 | Capataz Operating Inc | Midland, TX 79702 | Oil & Gas Operator | Sep 2020 |
| 116 | Capitan Energy, Incorporated | Carlsbad, NM 88221 | Oil & Gas Operator | May 2025 |
| 117 | Capps, R. Oil Corp. | Midland, TX 79704 | Oil & Gas Operator | Oct 2002 |
| 118 | Caprock Operating, Inc. | Midland, TX 79708 | Oil & Gas Operator | Dec 2007 |
| 119 | Carlow Corp. | Midland, TX 79702 | Oil & Gas Operator | Mar 2025 |
| 120 | Carpenter Services | Colorado City, TX 79512 | Oil & Gas Operator | May 1996 |
| 121 | Carrland Oil & Gas Inc. | Prosper, TX 75078 | Oil & Gas Operator | May 2025 |
| 122 | Cashion, Lyle, Company | Brandon, MS 39047 | Oil & Gas Operator | May 2008 |
| 123 | Cathey Petroleum Company, Inc. | Big Spring, TX 79720 | Oil & Gas Operator | Apr 2008 |
| 124 | Cavalry Resources LLC | The Woodlands, TX 77380 | Oil & Gas Operator | Jun 2010 |
| 125 | Cazador Operating, LLC | Midland, TX 79702 | Oil & Gas Operator | May 2025 |
| 126 | Celero Energy II, LP | Midland, TX 79701 | Oil & Gas Operator | May 2025 |
| 127 | Celero Energy LP | Midland, TX 79701 | Oil & Gas Operator | May 2011 |
| 128 | Centennial Energy Corp. | Big Lake, TX 76932 | Oil & Gas Operator | Jan 1997 |
| 129 | Central Drilling Company, USA | Midland, TX 79710 | Oil & Gas Operator | May 2006 |
| 130 | Central Texas Operating, Inc. | Breckenridge, TX 76424 | Oil & Gas Operator | May 2025 |
| 131 | Century Resources, Inc. | Houston, TX 77056 | Oil & Gas Operator | May 2025 |
| 132 | Chalk, Otis, Estate | Big Spring, TX 79721 | Oil & Gas Operator | Jan 2006 |
| 133 | Chaparral (USA) Energy, Inc. | Oklahoma City, OK 73114 | Oil & Gas Operator | Sep 2002 |
| 134 | Chaparral Energy, L.L.C. | Oklahoma City, OK 73142 | Oil & Gas Operator | May 2025 |
| 135 | Charter Petroleum Company | Abilene, TX 79605 | Oil & Gas Operator | May 2025 |
| 136 | Chesapeake Operating, Inc. | Oklahoma City, OK 73154 | Oil & Gas Operator | Jan 2025 |
| 137 | Chevron Midcontinent, L.P. | Midland, TX 79706 | Oil & Gas Operator | May 2025 |
| 138 | Chevron USA Inc | Midland, TX 79706 | Oil & Gas Operator | May 2025 |
| 139 | Chisos Operating, Inc. | Midland, TX 79702 | Oil & Gas Operator | May 2025 |
| 140 | Cholla Petroleum Inc | Dallas, TX 75225 | Oil & Gas Operator | May 2025 |
| 141 | Cimarex Energy Co. Of Colorado | Midland, TX 79706 | Oil & Gas Operator | May 2025 |
| 142 | Cinnabar Operating, LLC | Fort Worth, TX 76121 | Oil & Gas Operator | May 2025 |
| 143 | Circle H Oil Company | Big Spring, TX 79721 | Oil & Gas Operator | Apr 2020 |
| 144 | Citation Oil & Gas Corp. | Houston, TX 77269 | Oil & Gas Operator | May 2025 |
| 145 | Civitas Permian Operating, LLC | The Woodlands, TX 77380 | Oil & Gas Operator | May 2025 |
| 146 | Clear Fork, Incorporated | Abilene, TX 79604 | Oil & Gas Operator | May 2025 |
| 147 | Clear Water Inc. | Midland, TX 79710 | Oil & Gas Operator | May 2025 |
| 148 | CNG Producing Company | New Orleans, LA 70112 | Oil & Gas Operator | Dec 2015 |
| 149 | Coastal Management Corporation | Midland, TX 79702 | Oil & Gas Operator | Mar 2008 |
| 150 | Coastal Oil & Gas Corporation | Houston, TX 77252 | Oil & Gas Operator | Dec 2009 |
| 151 | Cobalt Energy LLC | Wichita, KS 67202 | Oil & Gas Operator | Jan 2025 |
| 152 | Cobra Oil & Gas Corporation | Wichita Falls, TX 76307 | Oil & Gas Operator | May 2025 |
| 153 | COG Operating LLC | Midland, TX 79701 | Oil & Gas Operator | May 2025 |
| 154 | Cole, John Otis | Big Spring, TX 79721 | Oil & Gas Operator | Jan 1999 |
| 155 | Coleman Oil & Gas Inc | Farmington, NM 87499 | Oil & Gas Operator | Jan 2023 |
| 156 | Collins & Ware, Inc. | Midland, TX 79701 | Oil & Gas Operator | Aug 2003 |
| 157 | Colorado Bluebonnet Energy Corp. | Englewood, CO 80112 | Oil & Gas Operator | Feb 2001 |
| 158 | Columbia Gas Development Corp. | Houston, TX 77251 | Oil & Gas Operator | Jun 1996 |
| 159 | Comanche Oil And Gas Company | Brownwood, TX 76801 | Oil & Gas Operator | May 2025 |
| 160 | Condor Petroleum, Inc. | Denver, CO 80202 | Oil & Gas Operator | Jun 2019 |
| 161 | Conoco Inc. | Houston, TX 77252 | Oil & Gas Operator | Mar 2015 |
| 162 | ConocoPhillips Company | Midland, TX 79701 | Oil & Gas Operator | May 2025 |
| 163 | Cooper Oil & Gas, LLC | Fort Worth, TX 76107 | Oil & Gas Operator | May 2025 |
| 164 | Copper Ridge Resources LLC | Midland, TX 79710 | Oil Operator | Feb 2025 |
| 165 | Coquina Oil Corporation | Houston, TX 77227 | Oil & Gas Operator | Mar 2015 |
| 166 | Cordero Energy Operating LLC | Dallas, TX 75219 | Oil & Gas Operator | Jan 2020 |
| 167 | Costilla Energy Inc | Midland, TX 79702 | Oil & Gas Operator | Mar 2008 |
| 168 | Costilla Petroleum Corporation | Midland, TX 79702 | Oil & Gas Operator | Mar 2015 |
| 169 | Covenant Production Co., L.C. | Midland, TX 79702 | Oil & Gas Operator | Nov 2002 |
| 170 | Cox, John L. | Midland, TX 79702 | Oil & Gas Operator | Mar 2015 |
| 171 | Cox, Robert G. & Associates,Inc. | Dallas, TX 75225 | Oil & Gas Operator | Feb 1994 |
| 172 | Coyote Oil, Inc. | Snyder, TX 79550 | Oil & Gas Operator | May 2025 |
| 173 | Cross Timbers Energy, LLC | Fort Worth, TX 76102 | Oil & Gas Operator | May 2025 |
| 174 | Cross Timbers Operating Co | Fort Worth, TX 76102 | Oil & Gas Operator | Jan 2025 |
| 175 | Crosstex Services, L.L.C. | Tuscola, TX 79562 | Oil Operator | May 2025 |
| 176 | Crownquest Operating, LLC | Midland, TX 79710 | Oil & Gas Operator | May 2025 |
| 177 | Crystal River Oil & Gas LLC | Snowmass VLG., CO 81615 | Oil & Gas Operator | Jan 2023 |
| 178 | Cuatro Oil And Gas Corporation | Abilene, TX 79603 | Oil & Gas Operator | May 2025 |
| 179 | Cutbow Operating, LLC | Midland, TX 79705 | Oil & Gas Operator | May 2025 |
| 180 | Cwoc | Big Spring, TX 79721 | Oil & Gas Operator | May 2025 |
| 181 | D & B Oil Company | Graham, TX 76450 | Oil & Gas Operator | May 2025 |
| 182 | D. G. Oil Co. | Dennis, TX 76439 | Oil & Gas Operator | May 2025 |
| 183 | Dakota Resources, Inc | Midland, TX 79707 | Oil & Gas Operator | Jan 2025 |
| 184 | Dalen Resources Oil & Gas Co. | Dallas, TX 75206 | Oil & Gas Operator | Jun 2010 |
| 185 | Dallas Production, Inc. | Dallas, TX 75206 | Oil & Gas Operator | Mar 2021 |
| 186 | DCP Operating Co LP | Houston, TX 77042 | Oil & Gas Operator | Feb 2025 |
| 187 | De IV Operating, LLC | Midland, TX 79701 | Oil & Gas Operator | May 2025 |
| 188 | De Operating LLC | Austin, TX 78701 | Oil & Gas Operator | Apr 2017 |
| 189 | De3 Operating LLC | Irving, TX 75038 | Oil & Gas Operator | Jun 2021 |
| 190 | Decleva, Paul | Wichita Falls, TX 76302 | Oil & Gas Operator | Dec 2020 |
| 191 | Dedica Energy Corporation | Mattoon, IL 61938 | Oil & Gas Operator | Mar 2008 |
| 192 | Delaware Davis Petroleum Corp. | Houston, TX 77056 | Oil & Gas Operator | Jan 2000 |
| 193 | Desert Production, Inc. | Midland, TX 79702 | Oil & Gas Operator | May 2025 |
| 194 | Devon Energy Production Company LP | Oklahoma City, OK 73102 | Oil & Gas Operator | May 2025 |
| 195 | Devon SFS Operating Inc | Oklahoma City, OK 73102 | Oil & Gas Operator | Mar 2008 |
| 196 | DHC, Inc. | Midland, TX 79710 | Oil & Gas Operator | Dec 1997 |
| 197 | Diamondback E&P LLC | Midland, TX 79701 | Oil & Gas Operator | May 2025 |
| 198 | Dickson Petroleum, Inc. | Midland, TX 79710 | Oil & Gas Operator | May 2000 |
| 199 | Dinero Operating Co | Midland, TX 79702 | Oil & Gas Operator | May 2025 |
| 200 | Discovery Operating Inc | Midland, TX 79705 | Oil & Gas Operator | May 2025 |