| 2401 | Continental Trend Resources, Inc | Oklahoma City, OK 73126 | Oil & Gas Operator | Nov 2024 |
| 2402 | Continual Oil & Gas, Inc. | Abilene, TX 79602 | Oil & Gas Operator | Nov 2024 |
| 2403 | Contour Energy E & P, Inc. | Houston, TX 77002 | Oil & Gas Operator | Oct 2002 |
| 2404 | Contour Energy E & P, LLC | Tulsa, OK 74103 | Oil & Gas Operator | Aug 2003 |
| 2405 | Contour Expl And Prod, LLC | Dallas, TX 75204 | Oil & Gas Operator | Nov 2024 |
| 2406 | Contour Oil & Gas, LLC | Abilene, TX 79602 | Oil & Gas Operator | Dec 2015 |
| 2407 | Contract Energy, L.L.C. | Houston, TX 77057 | Oil & Gas Operator | Oct 2012 |
| 2408 | Contract Oil & Gas Service Co. | Tomball, TX 77375 | Oil & Gas Operator | Apr 2007 |
| 2409 | Contrast Energy, LLC | Tulsa, OK 74119 | Oil & Gas Operator | Nov 2024 |
| 2410 | Convert Operating, LLC | Midland, TX 79701 | Oil & Gas Operator | Dec 2019 |
| 2411 | Convest Energy Corporation | Houston, TX 77057 | Oil & Gas Operator | Sep 2014 |
| 2412 | Conway Energy Oper Services Inc. | San Diego, TX 78384 | Oil & Gas Operator | Nov 2024 |
| 2413 | Cook D L | Holliday, TX 76366 | Oil & Gas Operator | Dec 2008 |
| 2414 | Cook Exploration Co. | Longview, TX 75602 | Oil & Gas Operator | Nov 2024 |
| 2415 | Cook Marshall Operating, Inc. | Austin, TX 78746 | Oil & Gas Operator | Mar 1995 |
| 2416 | Cook, Kenneth D. Operator | Midland, TX 79707 | Oil Operator | Nov 2024 |
| 2417 | Cooke & Montague Oper. Co., Inc. | Flower Mound, TX 75028 | Oil & Gas Operator | Nov 2024 |
| 2418 | Cooke Energy Company | San Antonio, TX 78250 | Oil & Gas Operator | Jul 2012 |
| 2419 | Cooke, Kenny D. Operating | Ballinger, TX 76821 | Oil & Gas Operator | Mar 2004 |
| 2420 | Coop Energy, Inc. | Perryton, TX 79070 | Oil & Gas Operator | Nov 2024 |
| 2421 | Cooper Oil & Gas, Inc. | Fort Worth, TX 76102 | Oil & Gas Operator | May 2010 |
| 2422 | Cooper Oil & Gas, LLC | Fort Worth, TX 76102 | Oil & Gas Operator | Nov 2024 |
| 2423 | Cooper Operating | Olney, TX 76374 | Oil Operator | Apr 2007 |
| 2424 | Cooper Production Company | New Braunfels, TX 78132 | Oil & Gas Operator | Sep 2021 |
| 2425 | Cooper, Glenn W. Oil & Gas | Seymour, TX 76380 | Oil & Gas Operator | Feb 2000 |
| 2426 | Copano Company | Refugio, TX 78377 | Oil & Gas Operator | Jun 2004 |
| 2427 | Copano Gas Unit | Refugio, TX 78377 | Oil & Gas Operator | Jun 2004 |
| 2428 | Cope Oil Company | Valley VIew, TX 76272 | Oil & Gas Operator | Feb 2015 |
| 2429 | Copestone Operating, LLC | Houston, TX 77019 | Oil & Gas Operator | Nov 2024 |
| 2430 | Copper Ridge Resources LLC | Midland, TX 79710 | Oil Operator | Jul 2024 |
| 2431 | Copperhead Oil & Gas, LTD. | San Antonio, TX 78209 | Oil & Gas Operator | Dec 2017 |
| 2432 | Coppertop | San Angelo, TX 76904 | Oil & Gas Operator | Nov 2024 |
| 2433 | Coquina Oil Corporation | Houston, TX 77227 | Oil & Gas Operator | Mar 2015 |
| 2434 | Coral E&P, LLC | Adkins, TX 78101 | Oil & Gas Operator | Nov 2024 |
| 2435 | Corbell, W. D. | Dublin, TX 76446 | Oil & Gas Operator | Dec 2001 |
| 2436 | Corda Corporation | Wichita Falls, TX 76302 | Oil & Gas Operator | Nov 2024 |
| 2437 | Cordele Development Corporation | San Antonio, TX 78205 | Oil & Gas Operator | Nov 2024 |
| 2438 | Cordero Energy Operating LLC | Dallas, TX 75219 | Oil & Gas Operator | Jan 2020 |
| 2439 | Cordillera Energy Partners, LLC | Greenwood VLG, CO 80111 | Oil & Gas Operator | Mar 2020 |
| 2440 | Cordillera Energy PRTNRS III,LLC | Houston, TX 77056 | Oil & Gas Operator | Apr 2012 |
| 2441 | Cordillera Texas, L.P. | Greenwood VLG, CO 80111 | Oil & Gas Operator | Sep 2008 |
| 2442 | Core E & P Corp. | Victoria, TX 77902 | Oil & Gas Operator | Nov 2024 |
| 2443 | Core Petro, LLC | Abilene, TX 79608 | Oil & Gas Operator | Nov 2024 |
| 2444 | Corenergy Operating Group, LLC | Houston, TX 77074 | Oil & Gas Operator | Nov 2024 |
| 2445 | Coreterra Operating, LLC | Pampa, TX 79065 | Oil & Gas Operator | Nov 2024 |
| 2446 | Corgray Holdings, LLC | Fulshear, TX 77441 | Gas Operator | Mar 2016 |
| 2447 | Corkran Energy, LP | Ignacio, CO 81137 | Oil & Gas Operator | May 2013 |
| 2448 | Corlena Oil Company | Amarillo, TX 79101 | Oil & Gas Operator | Nov 2024 |
| 2449 | Corman, Jack | Dallas, TX 75231 | Oil & Gas Operator | May 2022 |
| 2450 | Cornerstone E & P Company, LP | Irving, TX 75038 | Oil & Gas Operator | Nov 2010 |
| 2451 | Cornerstone Energy, Inc. | Houston, TX 77060 | Oil & Gas Operator | Nov 2011 |
| 2452 | Cornerstone Oil Trust | San Antonio, TX 78251 | Oil & Gas Operator | Jul 2003 |
| 2453 | Corona Exploration, Inc. | Midland, TX 79702 | Oil & Gas Operator | Nov 2024 |
| 2454 | Corona Operating, LLC | Midland, TX 79702 | Oil Operator | Nov 2024 |
| 2455 | Coronado Energy E&P Company, LLC | Houston, TX 77252 | Oil & Gas Operator | Dec 2010 |
| 2456 | Coronado Minerals, LLC | Houston, TX 77208 | Oil & Gas Operator | Nov 2024 |
| 2457 | Corpening, Joe F. | Bowie, TX 76230 | Oil & Gas Operator | Oct 2013 |
| 2458 | Corpus Christi Leaseholds, Inc. | Corpus Chrsti, TX 78403 | Oil & Gas Operator | Sep 1996 |
| 2459 | Correll, Spencer | Perryton, TX 79070 | Oil & Gas Operator | Nov 2024 |
| 2460 | Corriente Operating Company LLC | Taft, TX 78390 | Oil & Gas Operator | Nov 2024 |
| 2461 | Corsa Resources, LLC | Houston, TX 77002 | Oil & Gas Operator | Nov 2024 |
| 2462 | Corsicana Crude Company, LLC | Denver, CO 80202 | Oil Operator | Nov 2024 |
| 2463 | Corsicana Crude Holdings, LLC | Denver, CO 80202 | Oil Operator | Nov 2024 |
| 2464 | Corsicana Field Fund | Corsicana, TX 75110 | Oil & Gas Operator | Dec 1993 |
| 2465 | Corsicana Oil & Gas | Corsicana, TX 75151 | Oil Operator | Nov 2024 |
| 2466 | Cortex Energy, Inc. | Wichita, KS 67217 | Oil & Gas Operator | Jun 2024 |
| 2467 | Cortez Operating Company | Fort Worth, TX 76102 | Oil & Gas Operator | Nov 2016 |
| 2468 | Corum Operating Company, LLC | Houston, TX 77055 | Oil & Gas Operator | Nov 2024 |
| 2469 | Corum Production Company | Houston, TX 77002 | Oil & Gas Operator | Nov 2024 |
| 2470 | Corvette Oil Corporation | Fort Worth, TX 76115 | Oil & Gas Operator | Mar 2008 |
| 2471 | Cory, Kenneth W. | Bellaire, TX 77401 | Oil & Gas Operator | Mar 2012 |
| 2472 | Cory, Kenneth W. LTD. | Bellaire, TX 77401 | Oil & Gas Operator | Nov 2024 |
| 2473 | Costa Energy, LLC | Irving, TX 75063 | Oil & Gas Operator | Nov 2024 |
| 2474 | Costa Resources, Inc. | Dallas, TX 75209 | Oil & Gas Operator | Aug 2003 |
| 2475 | Costilla Energy Inc | Midland, TX 79702 | Oil & Gas Operator | Mar 2008 |
| 2476 | Costilla Petroleum Corporation | Midland, TX 79702 | Oil & Gas Operator | Mar 2015 |
| 2477 | Cotton Valley Operating Company | Oklahoma City, OK 73102 | Oil & Gas Operator | May 2000 |
| 2478 | Cotton Valley Operations, Inc. | Longview, TX 75608 | Oil & Gas Operator | Nov 2024 |
| 2479 | Cotton Valley Resources, LLC | Kilgore, TX 75663 | Oil & Gas Operator | Nov 2024 |
| 2480 | Cotton, W. L. | Hebbronville, TX 78361 | Oil & Gas Operator | Mar 1996 |
| 2481 | Cotton, W.L. Gems & Minerals LTD | Hebbronville, TX 78361 | Oil & Gas Operator | May 2000 |
| 2482 | Cottonwood Petroleum Co. | Abilene, TX 79603 | Oil & Gas Operator | Jun 2009 |
| 2483 | Cottonwood Resources, Inc. | Kilgore, TX 75663 | Oil & Gas Operator | Aug 2003 |
| 2484 | Couch Oil & Gas, Inc. | Dallas, TX 75229 | Oil & Gas Operator | Nov 2024 |
| 2485 | Couch, Gilbert | Kilgore, TX 75663 | Oil & Gas Operator | Nov 2024 |
| 2486 | Couch, Harry L. | Odessa, TX 79762 | Oil & Gas Operator | Nov 1994 |
| 2487 | Cougar Oil & Gas Co., Inc. | Houston, TX 77269 | Oil & Gas Operator | Mar 2008 |
| 2488 | Cougar Oil, Inc. | Henderson, TX 75653 | Oil & Gas Operator | Jun 2009 |
| 2489 | County Line Resources LLC | Lancaster, TX 75146 | Oil Operator | Nov 2024 |
| 2490 | County Management, Inc. | Houston, TX 77055 | Oil & Gas Operator | Apr 1993 |
| 2491 | Couroil, Inc. | Perryton, TX 79070 | Oil & Gas Operator | Sep 2000 |
| 2492 | Courson Oil & Gas, Inc. | Perryton, TX 79070 | Oil & Gas Operator | Nov 2024 |
| 2493 | Courson, Harold D. | Perryton, TX 79070 | Oil & Gas Operator | Aug 1998 |
| 2494 | Covalent Exploration Incorporated | Houston, TX 77079 | Oil Operator | Nov 2024 |
| 2495 | Cove Petroleum Corporation | Shreveport, LA 71101 | Oil & Gas Operator | Jun 2020 |
| 2496 | Covenant Oil & Gas, L.P. | Houston, TX 77057 | Oil & Gas Operator | Dec 2006 |
| 2497 | Covenant Oil Company | Houma, LA 70360 | Oil & Gas Operator | Dec 2015 |
| 2498 | Covenant Operating, LLC | Wichita Falls, TX 76308 | Oil Operator | Nov 2024 |
| 2499 | Covenant Production Co., L.C. | Midland, TX 79702 | Oil & Gas Operator | Nov 2002 |
| 2500 | Covered H Energy, LLC | Lubbock, TX 79423 | Oil Operator | Nov 2024 |