| 5201 | Central Mineral Management Inc | | Oil & Gas Operator | Jul 1990 |
| 5202 | Central Mineral Operating Co,Inc | San Antonio, TX 78216 | Oil & Gas Operator | Apr 1997 |
| 5203 | Central Montana Resources, LLC | San Antonio, TX 78209 | Oil Operator | Jul 2015 |
| 5204 | Central Oil Field Supply | Lancaster, OH 43130 | Oil & Gas Operator | Dec 1991 |
| 5205 | Central Ok Reclamation LLC | Lindsay, OK 73052 | Oil & Gas Operator | Jun 2014 |
| 5206 | Central Operating Inc | Denver, CO 80202 | Oil & Gas Operator | Sep 2024 |
| 5207 | Central Operating, LLC | | Oil & Gas Operator | Aug 2024 |
| 5208 | Central Pacific Group, Inc. | | Oil & Gas Operator | Dec 2003 |
| 5209 | Central Pacific Resources | | Oil Operator | Sep 2024 |
| 5210 | Central Park Energy | | Oil & Gas Operator | Dec 1991 |
| 5211 | Central Plains Oil&Gas Corp. (A) | Bryan, TX 77802 | Oil & Gas Operator | Mar 2003 |
| 5212 | Central Resources Inc | Denver, CO 80203 | Oil & Gas Operator | Dec 2019 |
| 5213 | Central States Energy LLC | Scottsdale, AZ 85260 | Gas Operator | Apr 2012 |
| 5214 | Central Texas Operating, Inc. | Breckenridge, TX 76424 | Oil & Gas Operator | Nov 2024 |
| 5215 | Central Transmission Sys Co | Denver, CO 80202 | Oil & Gas Operator | Apr 2015 |
| 5216 | Central Valley Gas Storage LLC | | Gas Operator | Sep 2024 |
| 5217 | Central Wyoming Resources LTD | Glenrock, WY 82637 | Oil Operator | Jul 2021 |
| 5218 | Centrex Operating Company | Tulsa, OK 74105 | Oil & Gas Operator | Aug 2024 |
| 5219 | Centura Inc | | Oil & Gas Operator | Feb 1985 |
| 5220 | Centurion Exploration Company | Houston, TX 77042 | Oil & Gas Operator | May 2009 |
| 5221 | Centurion Gas Corporation | Midland, TX 79702 | Oil & Gas Operator | Jul 2009 |
| 5222 | Centurion Oil & Gas Op. Co. Inc. | Wichita Falls, TX 76301 | Oil & Gas Operator | Dec 1998 |
| 5223 | Centurion Oil Inc | Oklahoma City, OK 73120 | Oil & Gas Operator | May 1992 |
| 5224 | Centurion Operating Corporation | Rockwall, TX 75087 | Oil & Gas Operator | Nov 2024 |
| 5225 | Centurion Resources LLC | Tulsa, OK 74136 | Oil & Gas Operator | Mar 2015 |
| 5226 | Century Assets Corporation | Houston, TX 77056 | Oil Operator | Nov 2024 |
| 5227 | Century Energy | Gillette, WY 82717 | Oil & Gas Operator | Dec 1996 |
| 5228 | Century Energy, Inc. | | Oil & Gas Operator | Aug 1989 |
| 5229 | Century Exploration Company | | Oil & Gas Operator | Dec 2003 |
| 5230 | Century Exploration Houston, Inc | The Woodlands, TX 77380 | Oil & Gas Operator | Oct 2011 |
| 5231 | Century Exploration Houston, LLC | Austin, TX 78702 | Oil & Gas Operator | Jan 2016 |
| 5232 | Century Exploration N.O. LLC | | Oil & Gas Operator | Jun 2017 |
| 5233 | Century Exploration N.O., Inc. | | Oil & Gas Operator | Sep 2011 |
| 5234 | Century Exploration New Orleans, LLC | | Oil & Gas Operator | Mar 2008 |
| 5235 | Century Exploration Resources LLC | | Oil & Gas Operator | Dec 2015 |
| 5236 | Century Mineral Corporation | | Oil & Gas Operator | Dec 1990 |
| 5237 | Century Mining, LLC | | Gas Operator | Dec 2021 |
| 5238 | Century Offshore MGMT. Corp. | | Oil & Gas Operator | Dec 1999 |
| 5239 | Century Oil & Gas Corporation | | Oil & Gas Operator | Dec 1987 |
| 5240 | Century Oil And Gas LLC | Katy, TX 77494 | Oil & Gas Operator | Sep 2024 |
| 5241 | Century Oil Company Inc | Troy, MI 48098 | Oil Operator | Dec 2023 |
| 5242 | Century Oil Mana | | Oil Operator | Apr 1987 |
| 5243 | Century Oil, Inc. | | Oil Operator | Apr 2022 |
| 5244 | Century Petroleum | Nowata, OK 74048 | Oil & Gas Operator | Dec 2000 |
| 5245 | Century Petroleum, Inc. | Jacksboro, TX 76458 | Oil & Gas Operator | Nov 2024 |
| 5246 | Century Production Inc | | Oil & Gas Operator | Dec 1986 |
| 5247 | Century Resources, Inc. | Houston, TX 77056 | Oil & Gas Operator | Nov 2024 |
| 5248 | Century Royalty 2000 GP, LLC | Conroe, TX 77301 | Oil & Gas Operator | Jun 2020 |
| 5249 | Century Stimulation & Eng LLC | | Oil Operator | Dec 2015 |
| 5250 | Century Well Service | Cumberland, WV 26047 | Oil & Gas Operator | Dec 2006 |
| 5251 | Ceo Operating, Co. | | Oil & Gas Operator | Dec 1999 |
| 5252 | Cep Mid-Continent LLC | Skiatook, OK 74070 | Oil & Gas Operator | Sep 2024 |
| 5253 | Cerberus Engineering, LLC | San Antonio, TX 78209 | Oil & Gas Operator | Nov 2024 |
| 5254 | Cerro Oil Co., Inc. | | Oil Operator | Dec 1987 |
| 5255 | Certified Petroleum Inc. | Mineral Wells, TX 76067 | Oil & Gas Operator | May 2006 |
| 5256 | Cesinger Exploration Service, In | Dallas, TX 75208 | Oil & Gas Operator | Mar 2006 |
| 5257 | Cet Energy Corporation | Spring, TX 77391 | Oil & Gas Operator | Nov 2003 |
| 5258 | Cex Operating Company | Dallas, TX 75206 | Oil & Gas Operator | Mar 2008 |
| 5259 | CFC Oil Inc | Cyril, OK 73029-5601 | Oil & Gas Operator | Sep 2024 |
| 5260 | CFG Energy, Inc | | Oil & Gas Operator | Apr 2006 |
| 5261 | CFM 66 LLC | McPherson, KS 67460 | Oil & Gas Operator | Apr 2024 |
| 5262 | CFM Oil, LLC | Artesia, NM 88210 | Oil & Gas Operator | Sep 2024 |
| 5263 | Cfo Resources, Inc. | Corpus Chrsti, TX 78412 | Oil & Gas Operator | Nov 2024 |
| 5264 | CFT Oil & Gas LLC | | Oil Operator | Sep 2024 |
| 5265 | CG Oil Co. | San Antonio, TX 78232 | Oil & Gas Operator | Mar 2011 |
| 5266 | CG Operating, Inc. | Austin, TX 78759 | Oil & Gas Operator | Nov 2024 |
| 5267 | CG Technical Operating Co, LLC | Katy, TX 77450 | Oil Operator | Nov 2024 |
| 5268 | CG&G Oil LLC | New Matamoras, OH 45767 | Oil & Gas Operator | Dec 2021 |
| 5269 | Cgas Expl Inc | Columbus, OH 43214-1862 | Oil & Gas Operator | Dec 2006 |
| 5270 | Cgas Exploration | Charleston, WV 25301 | Oil & Gas Operator | Dec 2006 |
| 5271 | CGS Operating, LLC | Kilgore, TX 75663 | Oil & Gas Operator | May 2023 |
| 5272 | CGT Inc | | Oil & Gas Operator | May 2015 |
| 5273 | CH-Seon Inc. | Dallas, TX 75251 | Oil & Gas Operator | Nov 2024 |
| 5274 | CH4 Energy II LLC | Fort Worth, TX 76109 | Oil & Gas Operator | Apr 2018 |
| 5275 | CH4 Energy LLC | Fort Worth, TX 76102 | Oil & Gas Operator | May 2006 |
| 5276 | CH4 Energy Six, LLC | Fort Worth, TX 76109 | Oil & Gas Operator | Nov 2024 |
| 5277 | CH4 Production Company Inc | Tulsa, OK 74170-1955 | Gas Operator | May 2007 |
| 5278 | Chace Oil Co Inc | Dallas, TX 75229 | Oil & Gas Operator | Mar 2006 |
| 5279 | Chaco Energy Company | Denver, CO 80201 | Oil & Gas Operator | Sep 2024 |
| 5280 | Chadco, Inc. | | Oil Operator | Jun 2024 |
| 5281 | Chaffin, Willis D | Louisa, KY 41230 | Oil Operator | Dec 2022 |
| 5282 | Chaim Nathan & Edie Bato | | Oil & Gas Operator | Aug 2024 |
| 5283 | Chain Oil & Gas, Inc. | Houston, TX 77024 | Oil & Gas Operator | Nov 2024 |
| 5284 | Chain, John H (Jack) | | Oil Operator | Dec 2023 |
| 5285 | Chalice Petroleum Corporation | Dallas, TX 75202 | Oil & Gas Operator | May 1998 |
| 5286 | Chalk, Otis, Estate | Big Spring, TX 79721 | Oil & Gas Operator | Jan 2006 |
| 5287 | Chalker Energy Management II,LLC | Houston, TX 77002 | Oil & Gas Operator | Feb 2008 |
| 5288 | Chalker Energy Management,LLC | Houston, TX 77002 | Oil & Gas Operator | Dec 2006 |
| 5289 | Chalker Operating Inc. | Richmond, TX 77406 | Oil & Gas Operator | Jul 2016 |
| 5290 | Challenge Operating Inc | Tulsa, OK 74103 | Oil & Gas Operator | Feb 2024 |
| 5291 | Challenger Energy SVCS Co., LLC | Kilgore, TX 75663 | Oil Operator | Nov 2024 |
| 5292 | Challenger Exploration | | Oil Operator | Nov 2014 |
| 5293 | Challenger Minerals Inc. | | Oil & Gas Operator | Dec 1991 |
| 5294 | Challenger Point Energy, LLC | | Oil & Gas Operator | Sep 2024 |
| 5295 | Chalmers Exploration Company | Abilene, TX 79608 | Oil & Gas Operator | Apr 1997 |
| 5296 | Chalmers-Santa Fe LLC | | Oil & Gas Operator | Dec 2007 |
| 5297 | Chama Resources | Dallas, TX 75354 | Oil & Gas Operator | Apr 2009 |
| 5298 | Chamberlain Dba/Old South Oil | Marietta, OH 45750 | Oil & Gas Operator | Dec 2008 |
| 5299 | Chambers & Hendrix Oil & Gas | Skiatook, OK 74070-0726 | Oil & Gas Operator | Aug 2022 |
| 5300 | Chambers & Mouren | | Oil & Gas Operator | Sep 2024 |