| 6201 | Condra, James M. Jr. | Sonora, TX 76950 | Oil & Gas Operator | May 1996 |
| 6202 | Condrin Oil 1985-A LTD | Tulsa, OK 74136 | Oil & Gas Operator | Nov 1998 |
| 6203 | Condry Oil Compa | | Oil Operator | May 1992 |
| 6204 | Cone & Petree Oil & Gas Exp. Inc | Lubbock, TX 79453 | Oil & Gas Operator | May 2024 |
| 6205 | Cone, Charles M. Services, Inc. | Dallas, TX 75372 | Oil & Gas Operator | Sep 2005 |
| 6206 | Cone, S. E. Jr. | Lubbock, TX 79408 | Oil & Gas Operator | Feb 2002 |
| 6207 | Confed Oil Incorporated | Tulsa, OK 74103 | Oil & Gas Operator | Mar 2008 |
| 6208 | Confederate Bay LLC | Okemah, OK 74859 | Oil & Gas Operator | Jul 2026 |
| 6209 | Confederate Spooling Inc | Okemah, OK 74859-2409 | Oil & Gas Operator | Apr 2020 |
| 6210 | Conklin Robert L Dba Conklin Oil LLC | Tulsa, OK 74153 | Oil Operator | Jun 2026 |
| 6211 | Conklin, Patrick J. | Rushville, NY 14544 | Gas Operator | Dec 2025 |
| 6212 | Conley Energy Co LLC | Marietta, OH 45750 | Oil & Gas Operator | Dec 2020 |
| 6213 | Conley Oil, Inc | Salyersville, KY 41465 | Oil & Gas Operator | Dec 2022 |
| 6214 | Conley P Smith Operating Co. | | Oil & Gas Operator | Jun 1995 |
| 6215 | Conley, Harry | Colony, KS 66015 | Oil Operator | Mar 2026 |
| 6216 | Conley, John | | Oil Operator | Aug 2000 |
| 6217 | Conn Energy Group, LLC | | Oil & Gas Operator | Apr 2024 |
| 6218 | Conn-Okla Producing Co Inc | | Oil & Gas Operator | Nov 1992 |
| 6219 | Connaway Oil & Gas Co. | Brookesmith, TX 76827 | Oil & Gas Operator | Feb 2016 |
| 6220 | Connell, Mark Allen | Claflin, KS 67525 | Oil Operator | May 2026 |
| 6221 | Conner Family Limited Partnership | Humble, TX 77338 | Oil & Gas Operator | Apr 2026 |
| 6222 | Conner Jelly | Seminole, OK 74868 | Oil & Gas Operator | Mar 1996 |
| 6223 | Conner Production Co LLC | Seminole, OK 74868 | Oil & Gas Operator | Jun 2026 |
| 6224 | Conner, E B Jr | | Oil & Gas Operator | Dec 2023 |
| 6225 | Conner, Eugene | Bartlesville, OK 74005 | Oil & Gas Operator | Jul 2020 |
| 6226 | Conner, Rick | Winfield, KS 67156 | Oil Operator | Aug 2019 |
| 6227 | Conner-Marrs Company | Tulsa, OK 74105 | Oil & Gas Operator | Sep 2026 |
| 6228 | Connie J & Ronald L Yeany | Fairmount City, PA 16224-1903 | Gas Operator | Dec 2025 |
| 6229 | Connoil LLC | Grove City, OH 43123 | Oil & Gas Operator | Dec 2025 |
| 6230 | Conoco Inc | Houston, TX 77252 | Oil & Gas Operator | Mar 2015 |
| 6231 | Conoco Incorpora | | Oil & Gas Operator | Apr 1988 |
| 6232 | ConocoPhillips Alaska, Inc. | | Oil & Gas Operator | Feb 2026 |
| 6233 | ConocoPhillips Company | Midland, TX 79701 | Oil & Gas Operator | Sep 2026 |
| 6234 | Conquest Energy, Inc. | Fort Worth, TX 76116 | Oil & Gas Operator | Sep 2026 |
| 6235 | Conquest Exploration | Houston, TX 77068 | Oil & Gas Operator | May 1991 |
| 6236 | Conquest Exploration Co. | | Oil & Gas Operator | Mar 1992 |
| 6237 | Conquest Oil Company | Big Spring, TX 79721 | Oil & Gas Operator | Aug 2024 |
| 6238 | Conquest Petroleum Inc | | Oil & Gas Operator | Nov 2014 |
| 6239 | Conquistador Petroleum,Inc. | Coleman, TX 76834 | Oil & Gas Operator | Sep 2026 |
| 6240 | Conrade Patsy | | Oil Operator | Jan 1986 |
| 6241 | Cons Asset MGMT SVCS E&P Op, LLC | Houston, TX 77002 | Oil Operator | Dec 2017 |
| 6242 | Considine, Barry | Burrton, KS 67020 | Gas Operator | Mar 2025 |
| 6243 | Consol Gas Company | Canonsburg, PA 15317 | Oil & Gas Operator | Dec 2021 |
| 6244 | Consolidated Energy Inv., Inc. | | Oil & Gas Operator | Oct 2013 |
| 6245 | Consolidated Energy Res., Inc. | | Oil Operator | Jun 1992 |
| 6246 | Consolidated Engy Reserve Inc | | Oil & Gas Operator | Jul 1991 |
| 6247 | Consolidated Exploration Company | Nichols Hill, OK 73116 | Oil & Gas Operator | Apr 2015 |
| 6248 | Consolidated Gas & Energy Corp. | San Diego, CA 92130 | Oil Operator | Apr 2012 |
| 6249 | Consolidated Natural Res. Corp. | Kilgore, TX 75662 | Oil & Gas Operator | Jan 2016 |
| 6250 | Consolidated Oil | | Oil Operator | Jul 1996 |
| 6251 | Consolidated Oil & Gas Inc | Wichita, KS 67202 | Oil & Gas Operator | Dec 2012 |
| 6252 | Consolidated Oil Well Services, Inc | Chanute, KS 66720 | Oil Operator | Jan 2008 |
| 6253 | Consolidated Peto Equity LTD | La Crescenta, CA 91214 | Oil & Gas Operator | Dec 1996 |
| 6254 | Consolidated Petro PTNRS I, LLC | Austin, TX 78759 | Oil & Gas Operator | Mar 2003 |
| 6255 | Consolidated Petrol Corp | Columbus, OH 43215 | Oil & Gas Operator | Dec 1995 |
| 6256 | Consolidated Production Inc. | Seminole, OK 74868 | Oil & Gas Operator | Jun 2026 |
| 6257 | Consolidated Properties | Tulsa, OK 74129 | Oil & Gas Operator | Jan 2017 |
| 6258 | Consolidated Res Of Amer | Cincinnati, OH 45208 | Oil & Gas Operator | Dec 1996 |
| 6259 | Consolidated Resources Corp | Shawnee, OK 74801 | Oil & Gas Operator | Sep 2014 |
| 6260 | Consolidated Resources, Inc. | | Oil & Gas Operator | May 2004 |
| 6261 | Consolidation Coal Company | Saint Clairsville, OH 43950-8742 | Oil & Gas Operator | Dec 2020 |
| 6262 | Consortium Energy LLC | Tallmadge, OH 44278 | Oil & Gas Operator | Dec 2025 |
| 6263 | Constitution Gas Transport Co., Inc. | Salt Lake City, UT 84124-1110 | Gas Operator | Jun 2012 |
| 6264 | Constitution Investment Co LLC | Marietta, OH 45750 | Oil & Gas Operator | Dec 2025 |
| 6265 | Constitution Petroleum | Salt Lake City, UT 84124-1110 | Oil & Gas Operator | Dec 2008 |
| 6266 | Consumers Energy Co | | Oil & Gas Operator | Apr 2010 |
| 6267 | Contango Midstream Company | Houston, TX 77002-3023 | Oil & Gas Operator | Jul 2026 |
| 6268 | Contango Operators, Inc. | Houston, TX 77098 | Oil & Gas Operator | Dec 2022 |
| 6269 | Contango Operators, LLC | | Oil & Gas Operator | Nov 2024 |
| 6270 | Contango Resources Company | | Oil & Gas Operator | Mar 2009 |
| 6271 | Contango Resources LLC | Andrews, TX 79714 | Oil & Gas Operator | Jul 2026 |
| 6272 | Contango Resources, Inc. | Houston, TX 77002 | Oil & Gas Operator | Jun 2026 |
| 6273 | Contango Rocky Mountain Inc | Houston, TX 77002 | Oil & Gas Operator | Jan 2020 |
| 6274 | Continental Brok | | Oil Operator | Oct 1994 |
| 6275 | Continental Ener | | Oil & Gas Operator | Dec 1996 |
| 6276 | Continental Energy | Garden City, KS 67846-0918 | Oil & Gas Operator | Jul 2017 |
| 6277 | Continental Energy Operating LLC | Tulsa, OK 74114-1302 | Oil & Gas Operator | Jul 2026 |
| 6278 | Continental Expl | | Oil Operator | Sep 1991 |
| 6279 | Continental Exploration LLC | Richardson, TX 75080 | Oil & Gas Operator | Sep 2026 |
| 6280 | Continental Exploration, Inc. | | Oil Operator | Dec 2001 |
| 6281 | Continental Export Corporation | Bowie, TX 76230 | Oil & Gas Operator | Sep 2013 |
| 6282 | Continental Gas Inc | Enid, OK 73702-5103 | Oil & Gas Operator | Apr 2012 |
| 6283 | Continental Industries LC | Casper, WY 82602 | Oil & Gas Operator | Feb 2008 |
| 6284 | Continental Oil | | Oil Operator | Jun 1985 |
| 6285 | Continental Oil & Gas Co. Inc. | | Oil & Gas Operator | Jul 1997 |
| 6286 | Continental Oil & Refining Co | Catoosa, OK 74015-0831 | Oil & Gas Operator | Feb 2026 |
| 6287 | Continental Oil Co. | Durango, CO 81301 | Oil & Gas Operator | Dec 1983 |
| 6288 | Continental Operating Co. | Houston, TX 77024 | Oil & Gas Operator | Sep 2026 |
| 6289 | Continental Petroleum, LLC | | Oil & Gas Operator | Oct 2013 |
| 6290 | Continental Production Co LLC | Greenwood VIllage, CO 80155 | Oil & Gas Operator | Aug 2012 |
| 6291 | Continental Resources, Inc. | Oklahoma City, OK 73126 | Oil & Gas Operator | Sep 2026 |
| 6292 | Continental Trend Resources, Inc | Oklahoma City, OK 73126 | Oil & Gas Operator | Sep 2026 |
| 6293 | Continental-Emsco Co | Hobbs, NM 88241 | Oil & Gas Operator | Jun 1995 |
| 6294 | Continual Oil & Gas, Inc. | Abilene, TX 79602 | Oil & Gas Operator | Sep 2026 |
| 6295 | Continuum Midstream, LLC | Tulsa, OK 74136 | Oil Operator | Feb 2026 |
| 6296 | Contour Energy E & P, Inc. | Houston, TX 77002 | Oil & Gas Operator | Oct 2002 |
| 6297 | Contour Energy E & P, LLC | Tulsa, OK 74103 | Oil & Gas Operator | Aug 2003 |
| 6298 | Contour Expl And Prod, LLC | Dallas, TX 75204 | Oil & Gas Operator | Sep 2026 |
| 6299 | Contour Oil & Gas, LLC | Abilene, TX 79602 | Oil & Gas Operator | Dec 2015 |
| 6300 | Contract Energy, L.L.C. | Houston, TX 77057 | Oil & Gas Operator | Oct 2012 |