| 201 | Catamount Energy Partners LLC | Denver, CO 80202 | Gas Operator | Apr 2025 |
| 202 | Catena Resources Operating, LLC | Houston, TX 77002 | Oil & Gas Operator | Dec 2022 |
| 203 | Caulkins Oil Company | Aztec, NM 87410 | Oil & Gas Operator | Oct 2024 |
| 204 | Caza Operating, LLC | Midland, TX 79701 | Oil & Gas Operator | May 2025 |
| 205 | CBM Partners Corporation | Overland Park, KS 66221 | Oil Operator | Aug 2015 |
| 206 | CBS Operating Corp | Midland, TX 79702 | Oil & Gas Operator | Aug 2012 |
| 207 | CDX Rio, LLC | Farmington, NM 87401 | Oil & Gas Operator | Aug 2009 |
| 208 | Cecil Lee'S Co | Tatum, NM 88267 | Oil Operator | Jan 2003 |
| 209 | Celero Energy II, LP | Midland, TX 79701 | Oil & Gas Operator | May 2025 |
| 210 | Celero Energy LP | Midland, TX 79701 | Oil & Gas Operator | May 2011 |
| 211 | Central Resources Inc | Denver, CO 80203 | Oil & Gas Operator | Dec 2019 |
| 212 | CFM Oil, LLC | Artesia, NM 88210 | Oil & Gas Operator | Mar 2025 |
| 213 | Chace Oil Co Inc | Dallas, TX 75229 | Oil & Gas Operator | Mar 2006 |
| 214 | Challenge Operating Inc | Tulsa, OK 74103 | Oil & Gas Operator | Feb 2024 |
| 215 | Champlin Exploration, Inc. | Enid, OK 73702 | Oil & Gas Operator | Mar 2025 |
| 216 | Chance Properties Co. | Kermit, TX 79745 | Oil & Gas Operator | May 2025 |
| 217 | Chantrey Corporation | Midland, TX 79707 | Gas Operator | Feb 2003 |
| 218 | Chaparral Energy, L.L.C. | Oklahoma City, OK 73142 | Oil & Gas Operator | May 2025 |
| 219 | Chaparral Oil & Gas Co | Aztec, NM 87410 | Gas Operator | Feb 2025 |
| 220 | Chaparral SWD | Eunice, NM 88231 | Oil Operator | Dec 1995 |
| 221 | Charger Resources, LLC | Hurst, TX 76054 | Oil & Gas Operator | Aug 2015 |
| 222 | Charles B Gillespie Jr | Midland, TX 79701 | Oil & Gas Operator | Jun 2001 |
| 223 | Charles J Kittrell | Hobbs, NM 88241 | Oil & Gas Operator | Oct 1997 |
| 224 | Charles W Kemp | Hobbs, NM 88240 | Oil & Gas Operator | Mar 2000 |
| 225 | Chateau Oil And Gas, Inc. | Dallas, TX 75225 | Oil & Gas Operator | Feb 2017 |
| 226 | Chaveroo Operating Co Inc | Hobbs, NM 88241 | Oil & Gas Operator | Jun 1997 |
| 227 | Chesapeake Exploration LLC | Oklahoma City, OK 731540496 | Oil & Gas Operator | Jul 2020 |
| 228 | Chesapeake Operating, Inc. | Oklahoma City, OK 73154 | Oil & Gas Operator | Jan 2025 |
| 229 | Chestnut Exploration And Production, Inc | Richardson, TX 78081 | Oil & Gas Operator | Nov 2020 |
| 230 | Chevron Midcontinent, L.P. | Midland, TX 79706 | Oil & Gas Operator | May 2025 |
| 231 | Chevron USA Inc | Midland, TX 79706 | Oil & Gas Operator | May 2025 |
| 232 | Chi Operating, Inc. | Midland, TX 79702 | Oil & Gas Operator | May 2025 |
| 233 | Chisholm Energy Operating, LLC | The Woodlands, TX 77380 | Oil & Gas Operator | Sep 2022 |
| 234 | Chisos Operating, Inc. | Midland, TX 79702 | Oil & Gas Operator | May 2025 |
| 235 | Chisos, LTD | Houston, TX 77098 | Oil & Gas Operator | May 2025 |
| 236 | Chuza Oil Company | Farmington, NM 87402 | Oil Operator | Dec 2017 |
| 237 | Chuza Operating | Midland, TX 79710 | Oil & Gas Operator | Sep 2006 |
| 238 | Cibola Energy Corp | Albuquerque, NM 87103 | Oil & Gas Operator | Oct 2017 |
| 239 | Cimarex Energy Co. Of Colorado | Midland, TX 79706 | Oil & Gas Operator | May 2025 |
| 240 | Cinco General Partnership | Albuquerque, NM 87103 | Oil & Gas Operator | Oct 1999 |
| 241 | Circle Ridge Production, Inc. | Graham, TX 76450 | Oil & Gas Operator | May 2025 |
| 242 | Citation Oil & Gas Corp. | Houston, TX 77269 | Oil & Gas Operator | May 2025 |
| 243 | Civitas Permian Operating, LLC | The Woodlands, TX 77380 | Oil & Gas Operator | May 2025 |
| 244 | Claco Oil Co | Artesia, NM 88210 | Oil & Gas Operator | Dec 2014 |
| 245 | Clayton Williams Energy, Inc. | Houston, TX 77070 | Oil & Gas Operator | Apr 2017 |
| 246 | Clifford C. Or Mary A. Terry | Dadeville, AL 36853 | Oil Operator | Feb 2003 |
| 247 | CM5 Resources, LLC | Artesia, NM 88211 | Oil & Gas Operator | Mar 2025 |
| 248 | CML Exploration, LLC | Austin, TX 78746 | Oil & Gas Operator | May 2025 |
| 249 | Coastal Management Corporation | Midland, TX 79702 | Oil & Gas Operator | Mar 2008 |
| 250 | Cobalt Operating, LLC | Midland, TX 79710 | Oil & Gas Operator | Feb 2025 |
| 251 | Cobra Oil & Gas Corporation | Wichita Falls, TX 76307 | Oil & Gas Operator | May 2025 |
| 252 | Cody Energy, Inc. | Houston, TX 77077 | Oil & Gas Operator | Mar 2025 |
| 253 | Cofer & Co LLC | Hobbs, NM 88240 | Oil & Gas Operator | Jan 2025 |
| 254 | COG Operating LLC | Midland, TX 79701 | Oil & Gas Operator | May 2025 |
| 255 | COG Production LLC | Midland, TX 79701 | Oil & Gas Operator | Mar 2025 |
| 256 | Coleman Oil & Gas Inc | Farmington, NM 87499 | Oil & Gas Operator | Jan 2023 |
| 257 | Colgate Operating, LLC | Midland, TX 79701 | Oil & Gas Operator | Apr 2024 |
| 258 | Collins & Ware, Inc. | Midland, TX 79701 | Oil & Gas Operator | Aug 2003 |
| 259 | Collins Oil & Gas Corp | Roswell, NM 88202 | Oil & Gas Operator | Jul 2017 |
| 260 | Colt Resources Corporation | Billings, MT 59103 | Oil & Gas Operator | Feb 2013 |
| 261 | Colter Operating Co | Horseshoe Bay, TX 78654 | Oil & Gas Operator | Nov 1997 |
| 262 | Columbia Gas Development Corp. | Houston, TX 77251 | Oil & Gas Operator | Jun 1996 |
| 263 | Compass Operating, L.L.C. | Midland, TX 79702 | Oil & Gas Operator | May 2025 |
| 264 | Concho Exploration | Midland, TX 79701 | Oil & Gas Operator | Feb 2004 |
| 265 | Concho Resources Inc. | Oklahoma City, OK 73154 | Oil & Gas Operator | Mar 2004 |
| 266 | Condor Oil Corp | Boulder, CO 80303 | Oil & Gas Operator | Dec 1994 |
| 267 | Conoco Inc. | Houston, TX 77252 | Oil & Gas Operator | Mar 2015 |
| 268 | ConocoPhillips Company | Midland, TX 79701 | Oil & Gas Operator | May 2025 |
| 269 | Consolidated Oil & Gas Inc | Wichita, KS 67202 | Oil & Gas Operator | Dec 2012 |
| 270 | Contango Resources LLC | Andrews, TX 79714 | Oil & Gas Operator | May 2025 |
| 271 | Continental Resources, Inc. | Oklahoma City, OK 73126 | Oil & Gas Operator | May 2025 |
| 272 | Continental-Emsco Co | Hobbs, NM 88241 | Oil & Gas Operator | Jun 1995 |
| 273 | Convest Energy Corporation | Houston, TX 77057 | Oil & Gas Operator | Sep 2014 |
| 274 | Copper Ridge Resources LLC | Midland, TX 79710 | Oil Operator | Feb 2025 |
| 275 | Corinne Grace | Carlsbad, NM 88220 | Oil & Gas Operator | Jan 2011 |
| 276 | Corkran Energy, LP | Ignacio, CO 81137 | Oil & Gas Operator | May 2013 |
| 277 | Coronado Energy E&P Company, LLC | Houston, TX 77252 | Oil & Gas Operator | Dec 2010 |
| 278 | Cortez Operating Company | Fort Worth, TX 76102 | Oil & Gas Operator | Nov 2016 |
| 279 | Costilla Energy Inc | Midland, TX 79702 | Oil & Gas Operator | Mar 2008 |
| 280 | Coterra Energy Operating Co. | Midland, TX 79706 | Oil & Gas Operator | Mar 2025 |
| 281 | Coulthurst MGT & Inv Inc | Reno, NV 89504 | Oil Operator | Sep 2020 |
| 282 | Craft Operating NM LLC | Houston, TX 77057 | Oil Operator | Apr 2024 |
| 283 | Crawley Petroleum Corporation | Oklahoma City, OK 73102 | Oil & Gas Operator | May 2025 |
| 284 | Crestridge DRLG. & Prod.Co.,LLC | Midland, TX 79702 | Oil & Gas Operator | Sep 2023 |
| 285 | Crockett Operating, LLC | Arlington, TX 76017 | Oil & Gas Operator | May 2025 |
| 286 | Cross Border Resources, Inc. | Dallas, TX 75235 | Oil & Gas Operator | Jan 2022 |
| 287 | Cross Creek Corporation | Duncan, OK 73534 | Oil & Gas Operator | Mar 1999 |
| 288 | Cross Timbers Energy, LLC | Fort Worth, TX 76102 | Oil & Gas Operator | May 2025 |
| 289 | Crownquest Operating, LLC | Midland, TX 79710 | Oil & Gas Operator | May 2025 |
| 290 | Crump Petroleum Corp | Midland, TX 79710 | Oil & Gas Operator | Feb 1999 |
| 291 | Curtis Hankamer | Houston, TX 77024 | Oil & Gas Operator | Jun 1997 |
| 292 | Curtis J Little | Farmington, NM 87499 | Oil & Gas Operator | Aug 2005 |
| 293 | D H Hunt | Dallas, TX 75201 | Oil & Gas Operator | Dec 1994 |
| 294 | D J Simmons, Inc | Farmington, NM 87499 | Oil & Gas Operator | Apr 2020 |
| 295 | D M Norman | Midland, TX 79701 | Oil & Gas Operator | Jan 2003 |
| 296 | D N C Enterprises Inc | Farmington, NM 87402 | Oil & Gas Operator | Feb 2005 |
| 297 | D-Mil Production Inc | Argyle, TX 76226 | Oil & Gas Operator | May 2025 |
| 298 | D. K. Boyd Oil & Gas Co., Inc. | Midland, TX 79702 | Oil & Gas Operator | Apr 1999 |
| 299 | D.W.R. Oil Properties, Inc. | Merkel, TX 79536 | Oil & Gas Operator | Mar 2025 |
| 300 | Dabb Energy Company | Fort Worth, TX 76132 | Oil & Gas Operator | Aug 2020 |