| 5401 | Chambers & Mouren | | Oil & Gas Operator | Mar 2025 |
| 5402 | Chambers Exploration Inc. | | Oil & Gas Operator | Dec 1986 |
| 5403 | Chambers Jerry | Denver, CO 80237 | Oil & Gas Operator | Dec 1993 |
| 5404 | Chambers Jerry Expl Co | | Oil & Gas Operator | Sep 2000 |
| 5405 | Chambers Operating, Inc. | Westbrook, TX 79565 | Oil & Gas Operator | Mar 2006 |
| 5406 | Chambers, R. H. | Abilene, TX 79606 | Oil & Gas Operator | Apr 2006 |
| 5407 | Chambers, R. H. LLC | Abilene, TX 79606 | Oil & Gas Operator | May 2025 |
| 5408 | Champ Oil Co, Inc | Hickory Creek, TX 75065 | Oil & Gas Operator | Dec 2020 |
| 5409 | Champ Operating Company | Dallas, TX 75208 | Oil & Gas Operator | Oct 2020 |
| 5410 | Champion Lone Star Operating,LLC | Midland, TX 79702 | Oil & Gas Operator | Mar 2020 |
| 5411 | Champion Petrole | | Oil Operator | Jan 1992 |
| 5412 | Champion Reserves-Cri Inc | Oklahoma City, OK 73123 | Oil & Gas Operator | Jun 1994 |
| 5413 | Champion-Park Gas Corporation | Warren, OH 44483 | Oil & Gas Operator | Dec 2023 |
| 5414 | Champlin Exploration, Inc. | Enid, OK 73702 | Oil & Gas Operator | Mar 2025 |
| 5415 | Champlin Petroleum Co. | Rock Springs, WY 82902 | Oil & Gas Operator | Mar 1991 |
| 5416 | Champlin SR., Bryan | Kennedy, NY 14747 | Gas Operator | Dec 2023 |
| 5417 | Chan West Oil Corporation | Irving, TX 75016 | Oil & Gas Operator | May 2025 |
| 5418 | Chanc West, Inc. | Iraan, TX 79744 | Oil & Gas Operator | Mar 1995 |
| 5419 | Chance Drilling Company | Commerce City, CO 80022 | Oil Operator | Sep 2009 |
| 5420 | Chance Energy Co. Inc. | Amarillo, TX 79114 | Oil & Gas Operator | Sep 1999 |
| 5421 | Chance Oil Co., Inc. | Vernon, TX 76385 | Oil & Gas Operator | Mar 2025 |
| 5422 | Chance Properties Co. | Kermit, TX 79745 | Oil & Gas Operator | May 2025 |
| 5423 | Chancellor & Dolezal | | Gas Operator | Apr 1992 |
| 5424 | Chancellor, Earl Sales Co., Inc. | Sweetwater, TX 79556 | Oil & Gas Operator | May 2025 |
| 5425 | Chandler & Associated Inc | Denver, CO 80202 | Oil & Gas Operator | Dec 1999 |
| 5426 | Chandler & Associates LLC | | Oil & Gas Operator | Jul 2001 |
| 5427 | Chandler & Associates, Inc. | Denver, CO 80202 | Oil & Gas Operator | May 1997 |
| 5428 | Chandler DJ Basin LLC | | Oil & Gas Operator | Jul 2012 |
| 5429 | Chandler Energy LLC | Denver, CO 80202 | Oil & Gas Operator | Jan 2009 |
| 5430 | Chandler Oil & Gas, LLC | Beeville, TX 78102 | Oil & Gas Operator | May 2025 |
| 5431 | Chaney & Cogburn Roustabout Well Serv | Cement, OK 73017-0267 | Oil & Gas Operator | Mar 2015 |
| 5432 | Chaney Oil Company | Andrews, TX 79714 | Oil & Gas Operator | May 2025 |
| 5433 | Chaney, Jerry C. And Jean R. | Chester, WV 26034-0000 | Gas Operator | Dec 2021 |
| 5434 | Channa Operating, LLC | Houston, TX 77063 | Oil & Gas Operator | Jul 2021 |
| 5435 | Channel Exploration Company | | Oil & Gas Operator | Feb 1997 |
| 5436 | Channel Production Company | Marshall, TX 75670 | Oil & Gas Operator | May 2025 |
| 5437 | Chanse Energy Corporation | Shreveport, LA 71165-1572 | Oil & Gas Operator | Sep 2021 |
| 5438 | Chanse Petroleum Corporation | New York, NY 10165-1134 | Oil & Gas Operator | Feb 2015 |
| 5439 | Chantrey Corporation | Midland, TX 79707 | Gas Operator | Feb 2003 |
| 5440 | Chanze Oil Co., Inc. | Kilgore, TX 75663 | Oil & Gas Operator | May 2025 |
| 5441 | Chap Operating, Inc. | Knox City, TX 79529 | Oil & Gas Operator | May 2025 |
| 5442 | Chaparosa Production Company,Inc | Freer, TX 78357 | Oil & Gas Operator | May 2025 |
| 5443 | Chaparral (USA) Energy, Inc. | Oklahoma City, OK 73114 | Oil & Gas Operator | Sep 2002 |
| 5444 | Chaparral Energy, Inc. | Oklahoma City, OK 73114 | Oil & Gas Operator | Dec 2009 |
| 5445 | Chaparral Energy, L.L.C. | Oklahoma City, OK 73142 | Oil & Gas Operator | May 2025 |
| 5446 | Chaparral Expl & C L Morris In | | Oil & Gas Operator | Nov 1994 |
| 5447 | Chaparral Exploration, Inc. | | Oil & Gas Operator | Jun 2000 |
| 5448 | Chaparral Natural Resources,Inc. | Austin, TX 78746 | Oil & Gas Operator | May 2025 |
| 5449 | Chaparral Oil & Gas Co | Aztec, NM 87410 | Gas Operator | Feb 2025 |
| 5450 | Chaparral Operating, Inc. | Shreveport, LA 71166 | Oil & Gas Operator | May 2025 |
| 5451 | Chaparral Petroleum Inc. | | Oil Operator | Feb 2025 |
| 5452 | Chaparral Resources Inc | Denver, CO 80293 | Oil & Gas Operator | Jan 1996 |
| 5453 | Chaparral SWD | Eunice, NM 88231 | Oil Operator | Dec 1995 |
| 5454 | Chapco, Inc. | Benavides, TX 78341 | Oil & Gas Operator | May 2025 |
| 5455 | Chapel Operating LLC | Lone Grove, OK 73443 | Oil Operator | Feb 2025 |
| 5456 | Chapman Elise P Estate | | Oil & Gas Operator | Mar 2020 |
| 5457 | Chapman Energy O | | Oil & Gas Operator | Jun 1993 |
| 5458 | Chapman Energy Oklahoma, Inc. | Dallas, TX 75231 | Oil & Gas Operator | Mar 2015 |
| 5459 | Chapman Explorat | | Oil Operator | Feb 1988 |
| 5460 | Chapman Exploration Inc | Tulsa, OK 74136 | Oil & Gas Operator | Aug 2013 |
| 5461 | Chapman Gary W | MT Perry, OH 43760 | Oil Operator | Dec 2024 |
| 5462 | Chapman Jim | Bristow, OK 74010-1173 | Oil Operator | Apr 2021 |
| 5463 | Chapman Oil Company | Midland, TX 79702 | Oil & Gas Operator | Mar 2025 |
| 5464 | Chapman Resources Corporation | Dallas, TX 75231 | Oil & Gas Operator | May 1999 |
| 5465 | Chapman, Ford Operating, Inc. | Midland, TX 79702 | Oil & Gas Operator | Jan 1996 |
| 5466 | Chapparal Operating Co. | Fort Worth, TX 76121 | Oil & Gas Operator | May 2025 |
| 5467 | Chapter Petroleum | Borger, TX 79008 | Oil & Gas Operator | Mar 1997 |
| 5468 | Chapter Petroleum, Inc. | Borger, TX 79008 | Oil & Gas Operator | Mar 2001 |
| 5469 | Chardonnay Operating, Inc. | Olney, TX 76374 | Oil & Gas Operator | Dec 1996 |
| 5470 | Charger Oil & Gas, LLC | Houston, TX 77002 | Oil & Gas Operator | Dec 2014 |
| 5471 | Charger Resources, LLC | Hurst, TX 76054 | Oil & Gas Operator | Aug 2015 |
| 5472 | Charger Shale Oil Operating, LLC | Austin, TX 78704 | Oil & Gas Operator | Sep 2021 |
| 5473 | Charing Cross Properties | | Oil Operator | Aug 1995 |
| 5474 | Charis Energy Inc | Kerrville, TX 78029-0469 | Oil & Gas Operator | Dec 2015 |
| 5475 | Charis Energy LLC | Kerrville, TX 78029 | Oil & Gas Operator | Dec 2005 |
| 5476 | Charis Oil & Gas, LLC | Addison, TX 75001 | Oil & Gas Operator | May 2025 |
| 5477 | Charity Gas, Inc. | Salem, WV 26426-5554 | Oil & Gas Operator | Dec 2021 |
| 5478 | Charles A. Bird, Estate | Midland, TX 79702 | Oil & Gas Operator | Feb 2015 |
| 5479 | Charles A. O'Niell, Jr. | | Oil & Gas Operator | Apr 2001 |
| 5480 | Charles B Gillespie Jr | Midland, TX 79701 | Oil & Gas Operator | Jun 2001 |
| 5481 | Charles B. Bice | | Oil & Gas Operator | Jul 1983 |
| 5482 | Charles D. Self Operating, LLC | Jacksboro, TX 76458 | Oil Operator | May 2025 |
| 5483 | Charles E. Mayfield | | Oil & Gas Operator | Mar 2001 |
| 5484 | Charles F. Word & Associates | | Oil Operator | Dec 1978 |
| 5485 | Charles G. Dannelly | | Oil & Gas Operator | Mar 1998 |
| 5486 | Charles Holston, Inc. | | Oil Operator | Jan 2025 |
| 5487 | Charles Holston, Inc. Dba GTTS | | Oil Operator | Apr 2009 |
| 5488 | Charles J Kittrell | Hobbs, NM 88241 | Oil & Gas Operator | Oct 1997 |
| 5489 | Charles M. Nolan | | Oil Operator | Aug 1984 |
| 5490 | Charles P Dunning LLC | | Oil & Gas Operator | Feb 2025 |
| 5491 | Charles T Giewont | Edinboro, PA 16412-5415 | Gas Operator | Dec 2009 |
| 5492 | Charles W Kemp | Hobbs, NM 88240 | Oil & Gas Operator | Mar 2000 |
| 5493 | Charles W. Hinesley | | Oil & Gas Operator | Dec 1991 |
| 5494 | Charleston Oil & Gas, Inc. | | Oil & Gas Operator | Mar 1997 |
| 5495 | Charmane Oil Corp | | Oil Operator | Dec 2014 |
| 5496 | Charoil Co., J. Norm And Charlotte Sibley Dba | Roundup, MT 59072 | Oil Operator | Oct 2002 |
| 5497 | Charro Operating, L.L.C. | Englewood, CO 80112 | Oil & Gas Operator | May 2025 |
| 5498 | Charter Energy, Inc. | Great Bend, KS 67530 | Oil Operator | Jan 2025 |
| 5499 | Charter Oak Production Co LLC | Oklahoma City, OK 73134 | Oil & Gas Operator | May 2025 |
| 5500 | Charter Petroleum Company | Abilene, TX 79605 | Oil & Gas Operator | May 2025 |