| 2501 | Crescent Drilling Company, Inc. | | Gas Operator | Jun 2024 |
| 2502 | Crescent DRLG & DVLPMNT, Inc. | | Oil & Gas Operator | Oct 1992 |
| 2503 | Crescent Energy Company | | Oil Operator | May 1993 |
| 2504 | Crescent Exploration Company | Austin, TX 78767 | Oil & Gas Operator | Aug 1995 |
| 2505 | Crescent Exploration, LLC | Edmond, OK 73013 | Oil & Gas Operator | Mar 2015 |
| 2506 | Crescent Oil & Gas | Decatur, TX 76234 | Gas Operator | Dec 1999 |
| 2507 | Crescent Oil Energies Corp | Crescent, OK 73028 | Oil & Gas Operator | Jun 1997 |
| 2508 | Crescent Pass Energy, LLC | Houston, TX 77070 | Oil & Gas Operator | Nov 2024 |
| 2509 | Crescent Point Energy Us Corp | Denver, CO 80202 | Oil & Gas Operator | Apr 2024 |
| 2510 | Creslenn Oil Company | | Oil & Gas Operator | Nov 1998 |
| 2511 | Crest Oil & Gas Management Corp. | | Oil & Gas Operator | Aug 2024 |
| 2512 | Crest Operating Company | Houston, TX 77042 | Oil & Gas Operator | Nov 2024 |
| 2513 | Crest Petr Inc | Rose Hill, KS 67133 | Oil Operator | Jun 2000 |
| 2514 | Crest Petroleum | Newark, OH 43055 | Oil & Gas Operator | Nov 1993 |
| 2515 | Crest Petroleum, LLC | Wichita Falls, TX 76301 | Oil & Gas Operator | Nov 2024 |
| 2516 | Crest Resources & Expl. Corp. | Houston, TX 77079 | Oil & Gas Operator | Dec 1998 |
| 2517 | Crest Resources Inc | Tulsa, OK 74103 | Oil & Gas Operator | Nov 2024 |
| 2518 | Crestmont Operating LLC | New York, NY 10151 | Oil Operator | Nov 2024 |
| 2519 | Creston Oil Corporation | Jacksonville, FL 32225 | Oil & Gas Operator | Dec 2021 |
| 2520 | Creston Petroleum Corp. | Dallas, TX 75380 | Oil & Gas Operator | Nov 2024 |
| 2521 | Crestone Peak Resources Operating LLC | | Oil & Gas Operator | Aug 2024 |
| 2522 | Crestridge DRLG. & Prod.Co.,LLC | Midland, TX 79702 | Oil & Gas Operator | Sep 2023 |
| 2523 | Creswell, Chris | Graham, TX 76450 | Oil & Gas Operator | Nov 2024 |
| 2524 | Creswell, R.G. | Graham, TX 76450 | Oil & Gas Operator | Feb 2013 |
| 2525 | Crew B Operating, LLC | Okmulgee, OK 74447 | Oil Operator | Aug 2024 |
| 2526 | Crey Oil & Gas LLC | Sundown, TX 79372 | Oil Operator | Nov 2024 |
| 2527 | CRG Properties LTD. | | Oil & Gas Operator | Dec 2013 |
| 2528 | Cricket Enterprises Corporation | Nowata, OK 74048-9683 | Oil & Gas Operator | Mar 2015 |
| 2529 | Criger Oil Compa | | Oil Operator | Sep 1992 |
| 2530 | Crimson Energy Company, LC | Fort Worth, TX 76102 | Oil & Gas Operator | Mar 2004 |
| 2531 | Crimson Energy Partners IV, LLC | Fort Worth, TX 76102 | Oil & Gas Operator | Jun 2023 |
| 2532 | Crimson Energy Partners V, LLC | Fort Worth, TX 76102 | Oil & Gas Operator | Nov 2024 |
| 2533 | Crimson Energy Partners, L.P. | Fort Worth, TX 76102 | Oil & Gas Operator | Jun 2009 |
| 2534 | Crimson Energy PTNRS III, L.L.C. | Fort Worth, TX 76102 | Oil & Gas Operator | Jul 2023 |
| 2535 | Crimson Explor Operating, Inc. | | Oil & Gas Operator | Dec 2009 |
| 2536 | Crimson Exploration Inc. | Houston, TX 77060 | Oil & Gas Operator | Apr 2006 |
| 2537 | Crimson Exploration Oper., Inc. | Houston, TX 77002 | Oil & Gas Operator | Dec 2019 |
| 2538 | Crimson Resource Management Corp. | | Oil & Gas Operator | Sep 2024 |
| 2539 | Crimson Resources, LLC | Tulsa, OK 74133 | Oil Operator | Jul 2007 |
| 2540 | Cris Oil | | Oil Operator | May 2024 |
| 2541 | Crissinger Robert A Inc | Strongsville, OH 44136 | Oil & Gas Operator | Dec 2003 |
| 2542 | Criswell E. White | | Gas Operator | Jun 2015 |
| 2543 | Criswell Energy LLC | Montezuma, IA 50171-8500 | Oil & Gas Operator | Oct 2022 |
| 2544 | Criteria Petrole | | Oil Operator | Sep 1996 |
| 2545 | Criterion Energy, Limited | Austin, TX 78737 | Gas Operator | Jan 2003 |
| 2546 | CRJ Bond Operations, LLC | Graham, TX 76450 | Oil Operator | Nov 2024 |
| 2547 | CRM Energy Partners | Skiatook, OK 74070 | Oil & Gas Operator | Sep 2024 |
| 2548 | CRM Energy, Inc. | Oklahoma City, OK 73101 | Oil & Gas Operator | Nov 2024 |
| 2549 | Crocker Oil Company | Windthorst, TX 76389 | Oil & Gas Operator | Aug 1999 |
| 2550 | Crockett Oil And Gas, Inc. | Sharon, KS 67138 | Oil & Gas Operator | Jun 2006 |
| 2551 | Crockett Operating, LLC | Arlington, TX 76017 | Oil & Gas Operator | Nov 2024 |
| 2552 | Crockett Operting, LLC | Arlington, TX 76013 | Oil & Gas Operator | Oct 2020 |
| 2553 | Croft Petroleum Co. | Cut Bank, MT 59427 | Oil & Gas Operator | Dec 2022 |
| 2554 | Croker, Danny | Wichita Falls, TX 76302 | Oil & Gas Operator | Nov 2024 |
| 2555 | Cromeens Petroleum, Inc. | Mineral Wells, TX 76067 | Oil & Gas Operator | Sep 1996 |
| 2556 | Cromer Carroll Oil & Gas LLC | Kalispell, MT 59901-8967 | Oil & Gas Operator | Aug 2024 |
| 2557 | Crone Oil Company | Gruver, TX 79040 | Oil & Gas Operator | Nov 2024 |
| 2558 | Cronus Exploration Co LLC | | Oil & Gas Operator | Jun 2024 |
| 2559 | Crooch John | Okmulgee, OK 74447 | Oil Operator | Aug 2024 |
| 2560 | Crook-Woodlin Expl.,Inc. | | Oil Operator | Feb 1988 |
| 2561 | Crosbys Creek Oil & Gas, LLC | Ridgeland, MS 39157 | Oil & Gas Operator | Jun 2024 |
| 2562 | Cross And Cross | Overland Park, KS 66214 | Oil Operator | Sep 1997 |
| 2563 | Cross Bar Energy, LLC | Wichita, KS 67206 | Oil Operator | Jul 2024 |
| 2564 | Cross Bar Petrol | | Oil Operator | Aug 1995 |
| 2565 | Cross Bar Petroleum, Inc. | Wichita, KS 67205 | Oil & Gas Operator | Jun 2016 |
| 2566 | Cross Border Resources, Inc. | Dallas, TX 75235 | Oil & Gas Operator | Jan 2022 |
| 2567 | Cross Creek Corporation | Duncan, OK 73534 | Oil & Gas Operator | Mar 1999 |
| 2568 | Cross Creek Energy LLC | Houston, TX 77074 | Oil & Gas Operator | Aug 2013 |
| 2569 | Cross Development Co. | | Oil Operator | Dec 1989 |
| 2570 | Cross Development-MMHS PRTSHP. | | Oil Operator | May 1987 |
| 2571 | Cross Development1984-1 PRTSHP | | Oil & Gas Operator | Sep 1990 |
| 2572 | Cross Don | Cushing, OK 74023-6316 | Oil & Gas Operator | Feb 2022 |
| 2573 | Cross Timbers Energy, LLC | Fort Worth, TX 76102 | Oil & Gas Operator | Nov 2024 |
| 2574 | Cross Timbers Oil Company | Dallas, TX 75284 | Oil & Gas Operator | May 2013 |
| 2575 | Cross Timbers Op | | Oil & Gas Operator | Nov 1996 |
| 2576 | Cross Timbers Operating Co | Fort Worth, TX 76102 | Oil & Gas Operator | Jul 2024 |
| 2577 | Cross Timbers Operating Inc | | Gas Operator | Jul 2001 |
| 2578 | Cross Timbers Production Co | Oklahoma City, OK 73102-5605 | Oil & Gas Operator | Mar 2005 |
| 2579 | Cross Winds Oil & Gas, LLC | Gruver, TX 79040 | Gas Operator | Nov 2024 |
| 2580 | Cross, Don E | | Oil & Gas Operator | Jan 2013 |
| 2581 | Cross, Howard W | Albany, KY 42602 | Oil Operator | Dec 2022 |
| 2582 | Crossbow Resources, LLC | Graham, TX 76450 | Oil & Gas Operator | Nov 2024 |
| 2583 | Crossfield Larry | | Oil & Gas Operator | Sep 1993 |
| 2584 | Crossfoot Operating, LLC | Houston, TX 77227 | Oil & Gas Operator | Nov 2024 |
| 2585 | Crossing Rocks Energy, LLC | Fort Worth, TX 76102 | Oil & Gas Operator | Mar 2018 |
| 2586 | Crossland Oil & Gas | Dallas, TX 75205 | Oil & Gas Operator | Aug 1994 |
| 2587 | Crossley, Patricia J. | Kennedy, NY 14747 | Gas Operator | Dec 2023 |
| 2588 | Crosspoint Energy Company | Dallas, TX 75205 | Oil & Gas Operator | Oct 2007 |
| 2589 | Crossroads Energy Development, LLC | | Oil Operator | Mar 2018 |
| 2590 | Crossroads Energy L.P. | Houston, TX 77064 | Oil & Gas Operator | Jun 2011 |
| 2591 | Crossroads Energy Partners, LLC | Houston, TX 77070 | Oil & Gas Operator | Mar 2018 |
| 2592 | Crossroads Mineral Prod., L.L.C. | Seguin, TX 78155 | Oil Operator | Nov 2024 |
| 2593 | Crossroads Operating, LLC | Midland, TX 79705 | Oil & Gas Operator | Nov 2024 |
| 2594 | Crossroads Petroleum L.L.C. | San Benito, TX 78586 | Oil & Gas Operator | Nov 2024 |
| 2595 | Crossroads Vacuum & Weld. Serv. | Luling, TX 78648 | Oil Operator | Mar 2010 |
| 2596 | Crosstex Lig, LLC | | Oil Operator | Mar 2014 |
| 2597 | Crosstex Processing SVCS, LLC | | Oil Operator | Mar 2014 |
| 2598 | Crosstex Services, L.L.C. | Tuscola, TX 79562 | Oil Operator | Nov 2024 |
| 2599 | Crosstex Treating Services, L.P. | | Oil Operator | Sep 2009 |
| 2600 | Crouch Petroleum Company | Amarillo, TX 79110 | Oil & Gas Operator | Mar 2015 |