| 2501 | Crain Minerals LLC | Oklahoma City, OK 73120-1004 | Oil & Gas Operator | Aug 2014 |
| 2502 | Crain Orchards Inc. | | Gas Operator | Dec 2024 |
| 2503 | Cramer Oil Company | Denver, CO 80202 | Oil Operator | Aug 2012 |
| 2504 | Cramer Oil LLC | Nowata, OK 74048-6011 | Oil Operator | Jan 2025 |
| 2505 | Crampton, Freddie | Holliday, TX 76366 | Oil & Gas Operator | Apr 2025 |
| 2506 | Crane Edward | | Oil Operator | Feb 1995 |
| 2507 | Crane Newton T | | Oil & Gas Operator | Feb 2013 |
| 2508 | Cranford Exploration, Inc. | | Oil & Gas Operator | Jul 2002 |
| 2509 | Cranford, Wayne | Electra, TX 76360 | Oil & Gas Operator | Dec 2019 |
| 2510 | Craruth Energy Corporation | Abilene, TX 79602 | Oil & Gas Operator | Apr 2025 |
| 2511 | Crasco Oil Company | Tulsa, OK 74120 | Oil Operator | Nov 1998 |
| 2512 | Crater, Gary D. | Kansas City, MO 64108 | Oil & Gas Operator | Feb 1988 |
| 2513 | Craton Energy Company II LLC | Oklahoma City, OK 73154 | Oil & Gas Operator | Dec 2006 |
| 2514 | Craton Energy Corporation | Oklahoma City, OK 73154 | Oil & Gas Operator | Jun 2005 |
| 2515 | Craton Energy Holdings III, LP | Houston, TX 77002 | Oil & Gas Operator | Jul 2009 |
| 2516 | Craton Operating LLC | Bellaire, TX 77401 | Oil & Gas Operator | Apr 2025 |
| 2517 | Cravey, W. H. | Hobbs, NM 88240 | Oil & Gas Operator | Jan 2012 |
| 2518 | Craw Operating LLC | Mooreland, OK 73852 | Oil & Gas Operator | Jan 2025 |
| 2519 | Crawford And Cameron Group | Houston, TX 77074 | Oil & Gas Operator | May 1997 |
| 2520 | Crawford Arthur E Dba The Lazy Oil Co | | Oil Operator | Dec 2023 |
| 2521 | Crawford Energy Operating Co | Houston, TX 77056 | Oil & Gas Operator | Aug 2008 |
| 2522 | Crawford Energy, Incorporated | Houston, TX 77056 | Oil & Gas Operator | Mar 2008 |
| 2523 | Crawford Hughes Operating Co. | The Woodlands, TX 77380 | Oil & Gas Operator | Apr 2025 |
| 2524 | Crawford John L | | Oil & Gas Operator | Jul 1991 |
| 2525 | Crawford Oil & W | | Oil Operator | Dec 1985 |
| 2526 | Crawford Oil Com | | Oil Operator | Dec 1987 |
| 2527 | Crawford Oil Company | Iowa Park, TX 76367 | Oil & Gas Operator | Jul 2001 |
| 2528 | Crawford Oil LLC | Paola, KS 66071 | Oil Operator | Dec 2019 |
| 2529 | Crawford Production Company Inc | Junction City, AR 71749 | Oil & Gas Operator | Jan 2025 |
| 2530 | Crawford, Linda | Alice, TX 78332 | Oil Operator | Apr 2025 |
| 2531 | Crawley Petroleum Corporation | Oklahoma City, OK 73102 | Oil & Gas Operator | Apr 2025 |
| 2532 | Crazy Horse Oil | | Oil Operator | Oct 2024 |
| 2533 | Crazy Horse Operating LLC | Austin, TX 78731 | Oil & Gas Operator | Apr 2025 |
| 2534 | Crazy J Oil LLC | | Oil & Gas Operator | Dec 2024 |
| 2535 | CRB Resources Inc | Oklahoma City, OK 73118 | Oil & Gas Operator | Jan 2025 |
| 2536 | CRD Investments LLC | Duncan, OK 73533-4226 | Oil Operator | Feb 2025 |
| 2537 | CRD Operating, LLC | Fort Worth, TX 76116 | Oil & Gas Operator | Feb 2021 |
| 2538 | Creager And Creager Production | Midland, TX 79708 | Oil & Gas Operator | Aug 2003 |
| 2539 | Creamer, Donald R., Inc. | Midland, TX 79702 | Oil & Gas Operator | Mar 2006 |
| 2540 | Creative Oil & Gas Operating,LLC | Giddings, TX 78942 | Oil & Gas Operator | May 2024 |
| 2541 | Creative Oil And Gas Op II, LLC | San Antonio, TX 78246 | Oil Operator | Apr 2025 |
| 2542 | Crebbs Oil Company | Batson, TX 77519 | Oil & Gas Operator | Jun 2024 |
| 2543 | Creco Operating, LLC | | Oil & Gas Operator | Nov 2015 |
| 2544 | Credo Petroleum Corporation | Denver, CO 80202 | Oil & Gas Operator | Jan 2013 |
| 2545 | Cree Oil LLC | | Oil & Gas Operator | Dec 2024 |
| 2546 | Creed Operating Co., LLC | Wichita Falls, TX 76301 | Oil & Gas Operator | Apr 2025 |
| 2547 | Creede Oil & Gas Company | Oklahoma City, OK 73102-7502 | Oil & Gas Operator | Jun 2006 |
| 2548 | Creek Ellis | Haskell, OK 74436 | Oil & Gas Operator | Mar 2012 |
| 2549 | Creek Energy, Inc. | Brownwood, TX 76804 | Oil & Gas Operator | Apr 2025 |
| 2550 | Creek Oil Company | Colorado Springs, CO 80906 | Oil & Gas Operator | Aug 2001 |
| 2551 | Creek Operating Company, Inc. | Dallas, TX 75205 | Oil & Gas Operator | Sep 1998 |
| 2552 | Crego Exploration | Dallas, TX 75243 | Oil & Gas Operator | Apr 2025 |
| 2553 | Creighton Rick D | New Matamoras, OH 45767 | Oil & Gas Operator | Dec 2016 |
| 2554 | Cremson Oil & Gas | Coleman, TX 76834 | Oil & Gas Operator | Apr 2025 |
| 2555 | Crenshaw Oil | Wichita Falls, TX 76302 | Oil & Gas Operator | Apr 2025 |
| 2556 | Crenshaw, Joe R. | Wichita Falls, TX 76301 | Oil & Gas Operator | Aug 2003 |
| 2557 | Crenshaw, K. M. | Wichita Falls, TX 76308 | Oil & Gas Operator | Aug 2018 |
| 2558 | Creole Operating, LLC | | Oil & Gas Operator | Dec 2024 |
| 2559 | Crescendo Resources, L.P. | Amarillo, TX 79188 | Oil & Gas Operator | Jan 2025 |
| 2560 | Crescent Drillin | | Gas Operator | Apr 1991 |
| 2561 | Crescent Drilling Company, Inc. | | Gas Operator | Dec 2024 |
| 2562 | Crescent DRLG & DVLPMNT, Inc. | | Oil & Gas Operator | Oct 1992 |
| 2563 | Crescent Energy Company | | Oil Operator | May 1993 |
| 2564 | Crescent Exploration Company | Austin, TX 78767 | Oil & Gas Operator | Aug 1995 |
| 2565 | Crescent Exploration, LLC | Edmond, OK 73013 | Oil & Gas Operator | Mar 2015 |
| 2566 | Crescent Oil & Gas | Decatur, TX 76234 | Gas Operator | Dec 1999 |
| 2567 | Crescent Oil Energies Corp | Crescent, OK 73028 | Oil & Gas Operator | Jun 1997 |
| 2568 | Crescent Pass Energy, LLC | Houston, TX 77070 | Oil & Gas Operator | Apr 2025 |
| 2569 | Crescent Point Energy Us Corp | Denver, CO 80202 | Oil & Gas Operator | Apr 2024 |
| 2570 | Creslenn Oil Company | | Oil & Gas Operator | Nov 1998 |
| 2571 | Crest Oil & Gas Management Corp. | | Oil & Gas Operator | Dec 2024 |
| 2572 | Crest Operating Company | Houston, TX 77042 | Oil & Gas Operator | Apr 2025 |
| 2573 | Crest Petr Inc | Rose Hill, KS 67133 | Oil Operator | Jun 2000 |
| 2574 | Crest Petroleum | Newark, OH 43055 | Oil & Gas Operator | Nov 1993 |
| 2575 | Crest Petroleum, LLC | Wichita Falls, TX 76301 | Oil & Gas Operator | Apr 2025 |
| 2576 | Crest Resources & Expl. Corp. | Houston, TX 77079 | Oil & Gas Operator | Dec 1998 |
| 2577 | Crest Resources Inc | Tulsa, OK 74103 | Oil & Gas Operator | Apr 2025 |
| 2578 | Crestmont Operating LLC | New York, NY 10151 | Oil Operator | Apr 2025 |
| 2579 | Creston Oil Corporation | Jacksonville, FL 32225 | Oil & Gas Operator | Dec 2021 |
| 2580 | Creston Petroleum Corp. | Dallas, TX 75380 | Oil & Gas Operator | Apr 2025 |
| 2581 | Crestone Peak Resources Operating LLC | | Oil & Gas Operator | Jan 2025 |
| 2582 | Crestridge DRLG. & Prod.Co.,LLC | Midland, TX 79702 | Oil & Gas Operator | Sep 2023 |
| 2583 | Creswell, Chris | Graham, TX 76450 | Oil & Gas Operator | Apr 2025 |
| 2584 | Creswell, R.G. | Graham, TX 76450 | Oil & Gas Operator | Feb 2013 |
| 2585 | Crew B Operating, LLC | Okmulgee, OK 74447 | Oil Operator | Jan 2025 |
| 2586 | Crey Oil & Gas LLC | Sundown, TX 79372 | Oil Operator | Apr 2025 |
| 2587 | CRG Properties LTD. | | Oil & Gas Operator | Dec 2013 |
| 2588 | Cricket Enterprises Corporation | Nowata, OK 74048-9683 | Oil & Gas Operator | Mar 2015 |
| 2589 | Cricket Petroleum | Tulsa, OK 74146 | Oil & Gas Operator | Dec 2016 |
| 2590 | Criger Oil Compa | | Oil Operator | Sep 1992 |
| 2591 | Crimson Energy Company, LC | Fort Worth, TX 76102 | Oil & Gas Operator | Mar 2004 |
| 2592 | Crimson Energy Partners IV, LLC | Fort Worth, TX 76102 | Oil & Gas Operator | Jun 2023 |
| 2593 | Crimson Energy Partners V, LLC | Fort Worth, TX 76102 | Oil & Gas Operator | Apr 2025 |
| 2594 | Crimson Energy Partners, L.P. | Fort Worth, TX 76102 | Oil & Gas Operator | Jun 2009 |
| 2595 | Crimson Energy PTNRS III, L.L.C. | Fort Worth, TX 76102 | Oil & Gas Operator | Jul 2023 |
| 2596 | Crimson Explor Operating, Inc. | | Oil & Gas Operator | Dec 2009 |
| 2597 | Crimson Exploration Inc. | Houston, TX 77060 | Oil & Gas Operator | Apr 2006 |
| 2598 | Crimson Exploration Oper., Inc. | Houston, TX 77002 | Oil & Gas Operator | Dec 2019 |
| 2599 | Crimson Resource Management Corp. | | Oil & Gas Operator | Dec 2024 |
| 2600 | Crimson Resources, LLC | Tulsa, OK 74133 | Oil Operator | Jul 2007 |