| 101 | Browning Oil Company, Inc. | Dallas, TX 75251 | Oil & Gas Operator | Jul 2025 |
| 102 | Bta Oil Producers | Midland, TX 79701 | Oil & Gas Operator | Sep 2009 |
| 103 | Bta Oil Producers, LLC | Midland, TX 79701 | Oil & Gas Operator | Jul 2025 |
| 104 | Burleson Petroleum, Inc. | Midland, TX 79702 | Oil & Gas Operator | Jul 2025 |
| 105 | Burleson, Lewis B. Inc. | Midland, TX 79702 | Oil & Gas Operator | Mar 2010 |
| 106 | Burlington Resources Oil And Gas Co. | Houston, TX 77210 | Oil & Gas Operator | Mar 2023 |
| 107 | Burns Operating | Wichita Falls, TX 76307 | Oil & Gas Operator | Sep 2002 |
| 108 | Bustamante Oil Company | Midland, TX 79710 | Oil & Gas Operator | Jul 2025 |
| 109 | Bustamante Resources LLC | Midland, TX 79710 | Oil & Gas Operator | Jul 2025 |
| 110 | Buttram Energies Inc | Oklahoma City, OK 73112-7235 | Oil & Gas Operator | Nov 2021 |
| 111 | Buxton Energy LLC | Oklahoma City, OK 73116-9111 | Oil & Gas Operator | Apr 2014 |
| 112 | BVX Operating, Inc. | Boerne, TX 78006 | Oil & Gas Operator | Jul 2025 |
| 113 | Cabal Energy Corporation | Midland, TX 79701 | Oil & Gas Operator | Jul 2025 |
| 114 | Callon Petroleum Operating Co | Houston, TX 77042 | Oil & Gas Operator | Jul 2024 |
| 115 | Cambrian Management LTD | McCaulley, TX 79534 | Oil & Gas Operator | Jul 2025 |
| 116 | Campana Petroleum Company | Midland, TX 79705 | Oil & Gas Operator | Jul 2025 |
| 117 | Caprock Exploration, Inc. | Monahans, TX 79756 | Oil & Gas Operator | Jul 2025 |
| 118 | Caprock Operating, Inc. | Midland, TX 79708 | Oil & Gas Operator | Dec 2007 |
| 119 | Capstone Natural Res II, LLC | Tulsa, OK 74170 | Oil & Gas Operator | Feb 2020 |
| 120 | Carken LLC | Andrews, TX 79714 | Oil Operator | Jul 2025 |
| 121 | Carlow Corp. | Midland, TX 79702 | Oil & Gas Operator | Apr 2025 |
| 122 | Celero Energy LP | Midland, TX 79701 | Oil & Gas Operator | May 2011 |
| 123 | Centurion Gas Corporation | Midland, TX 79702 | Oil & Gas Operator | Jul 2009 |
| 124 | CH-Seon Inc. | Dallas, TX 75251 | Oil & Gas Operator | Jul 2025 |
| 125 | Chaparral (USA) Energy, Inc. | Oklahoma City, OK 73114 | Oil & Gas Operator | Sep 2002 |
| 126 | Chaparral Energy, L.L.C. | Oklahoma City, OK 73142 | Oil & Gas Operator | Jul 2025 |
| 127 | Chaparral Natural Resources,Inc. | Austin, TX 78746 | Oil & Gas Operator | Jul 2025 |
| 128 | Chesapeake Operating, Inc. | Oklahoma City, OK 73154 | Oil & Gas Operator | Mar 2025 |
| 129 | Chevron Midcontinent, L.P. | Midland, TX 79706 | Oil & Gas Operator | Jul 2025 |
| 130 | Chevron USA Inc | Midland, TX 79706 | Oil & Gas Operator | Jul 2025 |
| 131 | Chisos Operating, Inc. | Midland, TX 79702 | Oil & Gas Operator | Jul 2025 |
| 132 | Chisos, LTD | Houston, TX 77098 | Oil & Gas Operator | Jul 2025 |
| 133 | Chuza Operating | Midland, TX 79710 | Oil & Gas Operator | Sep 2006 |
| 134 | Cimarex Energy Co. Of Colorado | Midland, TX 79706 | Oil & Gas Operator | Jul 2025 |
| 135 | Citation Oil & Gas Corp. | Houston, TX 77269 | Oil & Gas Operator | Jul 2025 |
| 136 | CLC Operations Inc | Midland, TX 79701 | Oil & Gas Operator | Mar 1997 |
| 137 | Clear Fork, Incorporated | Abilene, TX 79604 | Oil & Gas Operator | Jul 2025 |
| 138 | Clear Water Inc. | Midland, TX 79710 | Oil & Gas Operator | Jul 2025 |
| 139 | Cleveland Oil Company,L.L.C.,The | Midland, TX 79702 | Oil & Gas Operator | Sep 1999 |
| 140 | Cliffwood Production Co. | Houston, TX 77090 | Oil & Gas Operator | Aug 2013 |
| 141 | Coastal Management Corporation | Midland, TX 79702 | Oil & Gas Operator | Mar 2008 |
| 142 | Coates Energy Interests, LTD. | San Antonio, TX 78217 | Oil & Gas Operator | Aug 1997 |
| 143 | Cobalt Energy LLC | Wichita, KS 67202 | Oil & Gas Operator | Mar 2025 |
| 144 | Cobalt Operating, LLC | Midland, TX 79710 | Oil & Gas Operator | Feb 2025 |
| 145 | Coda Energy, Inc. | Dallas, TX 75231 | Oil & Gas Operator | Aug 1998 |
| 146 | Cody Company | Amarillo, TX 79121 | Oil & Gas Operator | Mar 2020 |
| 147 | Cody Energy LLC | Houston, TX 77024 | Oil & Gas Operator | Jun 2020 |
| 148 | Cody Energy, Inc. | Houston, TX 77077 | Oil & Gas Operator | May 2025 |
| 149 | Cody Resources, Inc. | Midland, TX 79705 | Oil & Gas Operator | Sep 2002 |
| 150 | Coert Holdings 1 LLC | Greenwich, CT 06830 | Oil & Gas Operator | Dec 2021 |
| 151 | COG Operating LLC | Midland, TX 79701 | Oil & Gas Operator | Jul 2025 |
| 152 | Collins & Ware, Inc. | Midland, TX 79701 | Oil & Gas Operator | Aug 2003 |
| 153 | Compass Operating, L.L.C. | Midland, TX 79702 | Oil & Gas Operator | Jul 2025 |
| 154 | Concho Resources Inc. | Oklahoma City, OK 73154 | Oil & Gas Operator | Mar 2004 |
| 155 | Condor Operating Co. | Midland, TX 79702 | Oil & Gas Operator | Feb 2015 |
| 156 | Condor Operating Company, LLC | Midland, TX 79702 | Oil & Gas Operator | Jul 2025 |
| 157 | Conoco Inc. | Houston, TX 77252 | Oil & Gas Operator | Mar 2015 |
| 158 | ConocoPhillips Company | Midland, TX 79701 | Oil & Gas Operator | Jul 2025 |
| 159 | Contango Resources LLC | Andrews, TX 79714 | Oil & Gas Operator | Jul 2025 |
| 160 | Contango Resources, Inc. | Houston, TX 77002 | Oil & Gas Operator | May 2025 |
| 161 | Continental Resources, Inc. | Oklahoma City, OK 73126 | Oil & Gas Operator | Jul 2025 |
| 162 | Cook, Kenneth D. Operator | Midland, TX 79707 | Oil Operator | Jul 2025 |
| 163 | Coquina Oil Corporation | Houston, TX 77227 | Oil & Gas Operator | Mar 2015 |
| 164 | Core E & P Corp. | Victoria, TX 77902 | Oil & Gas Operator | Jul 2025 |
| 165 | Corman, Jack | Dallas, TX 75231 | Oil & Gas Operator | May 2022 |
| 166 | Cory, Kenneth W. LTD. | Bellaire, TX 77401 | Oil & Gas Operator | Jul 2025 |
| 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 | Cottonwood Resources, Inc. | Kilgore, TX 75663 | Oil & Gas Operator | Aug 2003 |
| 170 | Cox, John L. | Midland, TX 79702 | Oil & Gas Operator | Mar 2015 |
| 171 | Crone Oil Company | Gruver, TX 79040 | Oil & Gas Operator | Jul 2025 |
| 172 | Cross Timbers Energy, LLC | Fort Worth, TX 76102 | Oil & Gas Operator | Jul 2025 |
| 173 | Cross Timbers Operating Co | Fort Worth, TX 76102 | Oil & Gas Operator | Mar 2025 |
| 174 | Crystal Oil Company | Shreveport, LA 71120 | Oil & Gas Operator | Jul 1995 |
| 175 | Cuervo Resources, Inc. | FT Stockton, TX 79735 | Oil & Gas Operator | Oct 1996 |
| 176 | Cuervo, Inc. | FT Stockton, TX 79735 | Oil & Gas Operator | Jul 2025 |
| 177 | Custer & Wright Operating, Inc. | Midland, TX 79702 | Oil & Gas Operator | Jul 2025 |
| 178 | Dabb Energy Company | Fort Worth, TX 76132 | Oil & Gas Operator | Aug 2020 |
| 179 | Dakota Resources, Inc. (I) | Midland, TX 79707 | Oil & Gas Operator | Jul 2025 |
| 180 | Dallas Production, Inc. | Dallas, TX 75206 | Oil & Gas Operator | Mar 2021 |
| 181 | Davcro Inc. | Lubbock, TX 79401 | Oil & Gas Operator | Dec 2003 |
| 182 | Davis Southern Operating Co LLC | Houston, TX 77004 | Oil & Gas Operator | Jul 2025 |
| 183 | Daylight Petroleum LLC | Houston, TX 77052 | Oil & Gas Operator | Jul 2025 |
| 184 | DCP Operating Co LP | Houston, TX 77042 | Oil & Gas Operator | Apr 2025 |
| 185 | De IV Operating, LLC | Midland, TX 79701 | Oil & Gas Operator | Apr 2025 |
| 186 | Dean Energy, Inc. | Midland, TX 79702 | Oil & Gas Operator | Nov 2019 |
| 187 | Dekalb Energy Company | Oklahoma City, OK 73134 | Oil & Gas Operator | Oct 1996 |
| 188 | Denbury Management, Inc. | Dallas, TX 75252 | Oil & Gas Operator | Dec 1999 |
| 189 | Desert States Energy, Inc. | Hobbs, NM 88240 | Oil & Gas Operator | Aug 1995 |
| 190 | Devon Energy Corp (Nevada) | Oklahoma City, OK 73102 | Oil & Gas Operator | Feb 2017 |
| 191 | Devon Energy Production Company LP | Oklahoma City, OK 73102 | Oil & Gas Operator | Jul 2025 |
| 192 | Devon SFS Operating Inc | Oklahoma City, OK 73102 | Oil & Gas Operator | Mar 2008 |
| 193 | Diamond Energy, Inc. | Sherman, TX 75091 | Oil & Gas Operator | Jul 2025 |
| 194 | Diamond S Energy Company | Fort Worth, TX 76132 | Oil & Gas Operator | Jul 2025 |
| 195 | Diamondback E&P LLC | Midland, TX 79701 | Oil & Gas Operator | Jul 2025 |
| 196 | Dickson Petroleum, Inc. | Midland, TX 79710 | Oil & Gas Operator | May 2000 |
| 197 | Dillard, A. W., Jr. | Midland, TX 79701 | Oil & Gas Operator | Jan 1995 |
| 198 | Dillon, H. L., Jr. | Houston, TX 77027 | Oil & Gas Operator | Mar 1996 |
| 199 | Dinero Operating Co | Midland, TX 79702 | Oil & Gas Operator | Jul 2025 |
| 200 | Dominion Oklahoma Texas E&P, Inc | Richmond, VA 23219 | Oil & Gas Operator | Sep 2018 |