| 2301 | Corley, Henry Oil Properties LLC | El Dorado, AR 71730 | Oil Operator | Jan 2025 |
| 2302 | Corman, Jack | Dallas, TX 75231 | Oil & Gas Operator | May 2022 |
| 2303 | Cornelius Dale | Willow, OK 73673 | Oil Operator | Oct 2025 |
| 2304 | Cornelius Oil Company | Kellyville, OK 74039-0459 | Oil & Gas Operator | Jul 2015 |
| 2305 | Cornelius Oil Inc | Kellyville, OK 74039 | Oil & Gas Operator | Nov 2025 |
| 2306 | Cornelius Petroleum Inc | | Oil & Gas Operator | Nov 2025 |
| 2307 | Cornelius Phillip J & Connie | Kellyville, OK 74039 | Oil & Gas Operator | Dec 2000 |
| 2308 | Cornelius Tony | Sapulpa, OK 74066-5845 | Oil & Gas Operator | Nov 2025 |
| 2309 | Cornelius, Steven L | | Oil Operator | Sep 2015 |
| 2310 | Cornell Glen R | Pauls Valley, OK 73075-9606 | Oil & Gas Operator | Oct 2013 |
| 2311 | Cornell Oil Company | | Oil & Gas Operator | May 1985 |
| 2312 | Cornell Rich M - | | Oil & Gas Operator | May 1993 |
| 2313 | Corner Energy LLC | Oklahoma City, OK 73156-0548 | Oil & Gas Operator | Mar 2015 |
| 2314 | Corner Operating Company, Inc | New York, NY 10165 | Oil & Gas Operator | Dec 1999 |
| 2315 | Cornerstone E & P Company LP | Irving, TX 75038 | Oil & Gas Operator | Nov 2010 |
| 2316 | Cornerstone Energy, Inc. | Houston, TX 77060 | Oil & Gas Operator | Nov 2011 |
| 2317 | Cornerstone Energy, LLC | Magnolia, AR 71753 | Oil & Gas Operator | Jan 2025 |
| 2318 | Cornerstone Full Gospel Inc | Duncan Falls, OH 43734 | Oil & Gas Operator | Dec 2024 |
| 2319 | Cornerstone Gas Processing Inc | | Oil Operator | Jan 1999 |
| 2320 | Cornerstone Minerals LTD | | Oil & Gas Operator | Dec 2009 |
| 2321 | Cornerstone Mining, LLC | | Gas Operator | Sep 2019 |
| 2322 | Cornerstone Natural Gas Co. | | Oil Operator | Oct 1999 |
| 2323 | Cornerstone Natural Resources LLC | Denver, CO 80234 | Oil & Gas Operator | Jan 2026 |
| 2324 | Cornerstone Oil Trust | San Antonio, TX 78251 | Oil & Gas Operator | Jul 2003 |
| 2325 | Cornie Creek Corporation | Magnolia, AR 71753 | Oil & Gas Operator | Jan 2025 |
| 2326 | Corning Oil Co Inc | Sonora, OH 43785 | Oil & Gas Operator | Dec 2002 |
| 2327 | Cornwell Well Service, Inc. | | Oil & Gas Operator | Feb 2010 |
| 2328 | Cornwell, G. G. | | Oil & Gas Operator | Sep 2009 |
| 2329 | Corona Development Co. Inc. | | Oil Operator | Dec 1989 |
| 2330 | Corona Exploration, Inc. | Midland, TX 79702 | Oil & Gas Operator | Feb 2026 |
| 2331 | Corona Operating, LLC | Midland, TX 79702 | Oil Operator | Feb 2026 |
| 2332 | Coronado Energy E&P Company, LLC | Houston, TX 77252 | Oil & Gas Operator | Dec 2010 |
| 2333 | Coronado Energy Partners LLC | Tulsa, OK 74136 | Oil & Gas Operator | Nov 2025 |
| 2334 | Coronado Great Plains LLC | Tulsa, OK 74137-2832 | Gas Operator | Apr 2013 |
| 2335 | Coronado Kansas, LLC | Tulsa, OK 74133 | Oil Operator | Oct 2009 |
| 2336 | Coronado Minerals, LLC | Houston, TX 77208 | Oil & Gas Operator | Feb 2026 |
| 2337 | Coronado Oil | Lindsborg, KS 67456 | Oil Operator | Sep 1985 |
| 2338 | Coronado Oil & G | | Oil Operator | Dec 1996 |
| 2339 | Coronado Oil & Gas, Inc. | Great Bend, KS 67530 | Oil Operator | Jul 2004 |
| 2340 | Coronado Oil & Minerals Co. | | Oil & Gas Operator | Sep 1980 |
| 2341 | Coronado Oil Company | Denver, CO 80202 | Oil & Gas Operator | Dec 2019 |
| 2342 | Coronado Oil, Inc. | Salina, KS 67401 | Oil Operator | May 1990 |
| 2343 | Coronado Oklahoma LLC | Tulsa, OK 74133-7036 | Gas Operator | Apr 2020 |
| 2344 | Coronado Petroleum Corporation | Oklahoma City, OK 73102-4803 | Oil & Gas Operator | Nov 2025 |
| 2345 | Corpening, Joe F. | Bowie, TX 76230 | Oil & Gas Operator | Oct 2013 |
| 2346 | Corporate America Res Inc | Bartlesville, OK 74003 | Oil & Gas Operator | Jul 2005 |
| 2347 | Corpus Christi Leaseholds, Inc. | Corpus Chrsti, TX 78403 | Oil & Gas Operator | Sep 1996 |
| 2348 | Corpus Christi Oil & Gas Co. | | Oil & Gas Operator | Dec 1991 |
| 2349 | Correll, Spencer | Perryton, TX 79070 | Oil & Gas Operator | Feb 2026 |
| 2350 | Corrida Oil Inc | Denver, CO 80217 | Oil & Gas Operator | Jun 1990 |
| 2351 | Corriente Operating Company LLC | Taft, TX 78390 | Oil & Gas Operator | Feb 2026 |
| 2352 | Corsa Resources, LLC | Houston, TX 77002 | Oil & Gas Operator | Feb 2026 |
| 2353 | Corsair Energy, LC | Wichita, KS 67202 | Oil & Gas Operator | Apr 2004 |
| 2354 | Corsicana Crude Company, LLC | Denver, CO 80202 | Oil Operator | Feb 2026 |
| 2355 | Corsicana Crude Holdings, LLC | Denver, CO 80202 | Oil Operator | Feb 2026 |
| 2356 | Corsicana Field Fund | Corsicana, TX 75110 | Oil & Gas Operator | Dec 1993 |
| 2357 | Corsicana Oil & Gas | Corsicana, TX 75151 | Oil Operator | Feb 2026 |
| 2358 | Cortam, Inc. | Augusta, KS 67010 | Oil Operator | Dec 2024 |
| 2359 | Corterra Energy Operating LLC | Tulsa, OK 74119-4844 | Oil & Gas Operator | Aug 2021 |
| 2360 | Cortex Energy, Inc. | Wichita, KS 67217 | Oil & Gas Operator | Dec 2024 |
| 2361 | Cortez Operating Company | Fort Worth, TX 76102 | Oil & Gas Operator | Nov 2016 |
| 2362 | Cortland Energy Co Inc | Worthington, OH 43085 | Oil & Gas Operator | Dec 2024 |
| 2363 | Corum Production Co.-Tepco | | Oil & Gas Operator | Dec 1989 |
| 2364 | Corum Production Company | Houston, TX 77002 | Oil & Gas Operator | Feb 2026 |
| 2365 | Corvette Oil Corporation | Fort Worth, TX 76115 | Oil & Gas Operator | Mar 2008 |
| 2366 | Corwin B V | Enid, OK 73701 | Oil & Gas Operator | Apr 2017 |
| 2367 | Cory, Kenneth W. | Bellaire, TX 77401 | Oil & Gas Operator | Mar 2012 |
| 2368 | Cory, Kenneth W. LTD. | Bellaire, TX 77401 | Oil & Gas Operator | Feb 2026 |
| 2369 | Coseka Resources USA LTD | Denver, CO 80202-1602 | Oil & Gas Operator | Jun 1988 |
| 2370 | Cosgriff Joe | Detroit, MI 48208 | Oil & Gas Operator | Dec 1998 |
| 2371 | Coshocton Pipe Co | Columbus, OH 43229 | Oil & Gas Operator | Dec 1989 |
| 2372 | Cosper Well/H Cosper | Logan, OH 43138 | Oil & Gas Operator | Dec 1996 |
| 2373 | Costa Energy, LLC | Irving, TX 75063 | Oil & Gas Operator | Feb 2026 |
| 2374 | Costa Loma LTD. | | Oil & Gas Operator | Nov 2025 |
| 2375 | Costa Resources, Inc. | Dallas, TX 75209 | Oil & Gas Operator | Aug 2003 |
| 2376 | Costilla Energy, Inc. | Midland, TX 79702 | Oil & Gas Operator | Mar 2008 |
| 2377 | Costilla Petroleum Corporation | Midland, TX 79702 | Oil & Gas Operator | Mar 2015 |
| 2378 | Coteau Energy LLC | | Oil & Gas Operator | Dec 2024 |
| 2379 | Coterra Energy Inc | Coraopolis, PA 15108-9862 | Oil & Gas Operator | Dec 2025 |
| 2380 | Coterra Energy Operating Co. | Midland, TX 79706 | Oil & Gas Operator | Feb 2026 |
| 2381 | Coterra Energy Operating E LLC | Midland, TX 79706 | Oil & Gas Operator | Dec 2025 |
| 2382 | Coterra Energy Operating F LLC | Midland, TX 79706 | Oil & Gas Operator | Dec 2025 |
| 2383 | Coterra Energy Operating M LLC | Midland, TX 79706 | Oil & Gas Operator | Aug 2019 |
| 2384 | Cotiga Development Company, Limited Partnership | Williamson, WV 25661-0000 | Oil & Gas Operator | Dec 2021 |
| 2385 | Cotton County Ventures | Estes Park, CO 80517 | Oil Operator | Nov 2003 |
| 2386 | Cotton Petroleum | | Oil & Gas Operator | May 1988 |
| 2387 | Cotton Petroleum Corp/Apc | Denver, CO 80203-4549 | Oil & Gas Operator | Nov 1990 |
| 2388 | Cotton Petroleum Corporation | Tulsa, OK 74102 | Oil & Gas Operator | Jan 2005 |
| 2389 | Cotton Valley Operating Company | Oklahoma City, OK 73102 | Oil & Gas Operator | May 2000 |
| 2390 | Cotton Valley Operations, Inc. | Longview, TX 75608 | Oil & Gas Operator | Feb 2026 |
| 2391 | Cotton Valley Resources, LLC | Kilgore, TX 75663 | Oil & Gas Operator | Feb 2025 |
| 2392 | Cotton Well Drilling Co Inc | Sheridan, NY 14135 | Oil & Gas Operator | Dec 2024 |
| 2393 | Cotton, W. L. | Hebbronville, TX 78361 | Oil & Gas Operator | Mar 1996 |
| 2394 | Cotton, W.L. Gems & Minerals LTD | Hebbronville, TX 78361 | Oil & Gas Operator | May 2000 |
| 2395 | Cottonmouth SWD LLC | Tulsa, OK 74103-3522 | Oil Operator | Nov 2025 |
| 2396 | Cottonwood Oil & Supply | | Oil & Gas Operator | Aug 2013 |
| 2397 | Cottonwood Oil C | | Oil & Gas Operator | Oct 1988 |
| 2398 | Cottonwood Oil Inc | Worland, WY 82401 | Oil & Gas Operator | Jun 1988 |
| 2399 | Cottonwood Opr Corp | Dubois, PA 15801-0403 | Gas Operator | Dec 1989 |
| 2400 | Cottonwood Petroleum Co. | Abilene, TX 79603 | Oil & Gas Operator | Jun 2009 |