| 6401 | Coop Energy, Inc. | Perryton, TX 79070 | Oil & Gas Operator | Nov 2024 |
| 6402 | Cooper & Brain Inc. | | Oil & Gas Operator | Sep 2024 |
| 6403 | Cooper A L & Mae C | | Oil & Gas Operator | Jan 2001 |
| 6404 | Cooper Energy Corp | | Oil & Gas Operator | Jun 1995 |
| 6405 | Cooper John T | Duncan, OK 73534 | Oil & Gas Operator | Sep 2014 |
| 6406 | Cooper Lisa L | Cushing, OK 74023 | Oil & Gas Operator | Mar 2015 |
| 6407 | Cooper Mineral Group Inc | Bellaire, TX 77401 | Oil & Gas Operator | Feb 2004 |
| 6408 | Cooper Oil & Gas, Inc. | Fort Worth, TX 76102 | Oil & Gas Operator | May 2010 |
| 6409 | Cooper Oil & Gas, LLC | Fort Worth, TX 76102 | Oil & Gas Operator | Nov 2024 |
| 6410 | Cooper Oil Company | Andover, KS 67002 | Oil Operator | Oct 1997 |
| 6411 | Cooper Oil Inc | Duncan, OK 73534 | Oil & Gas Operator | Sep 2014 |
| 6412 | Cooper Operating | Olney, TX 76374 | Oil Operator | Apr 2007 |
| 6413 | Cooper Operating LLC | Yukon, OK 73099 | Oil & Gas Operator | Sep 2024 |
| 6414 | Cooper Production Company | New Braunfels, TX 78132 | Oil & Gas Operator | Sep 2021 |
| 6415 | Cooper Service Co. | | Oil & Gas Operator | Dec 2022 |
| 6416 | Cooper, Glenn W. Oil & Gas | Seymour, TX 76380 | Oil & Gas Operator | Feb 2000 |
| 6417 | Cooper, J. M. | Winfield, KS 67119 | Oil Operator | Oct 1997 |
| 6418 | Cooper, Lowell E. | Peabody, KS 66866 | Oil Operator | Nov 1987 |
| 6419 | Coors Energy | Golden, CO 80402-0467 | Oil & Gas Operator | Sep 1992 |
| 6420 | Coots, Jesse | Le Roy, NY 14482 | Gas Operator | Dec 2023 |
| 6421 | Copano Company | Refugio, TX 78377 | Oil & Gas Operator | Jun 2004 |
| 6422 | Copano Gas Unit | Refugio, TX 78377 | Oil & Gas Operator | Jun 2004 |
| 6423 | Cope Oil Company | Valley VIew, TX 76272 | Oil & Gas Operator | Feb 2015 |
| 6424 | Copeland Gas LLC | Albion, PA 16401 | Gas Operator | Dec 2023 |
| 6425 | Copestone Operating, LLC | Houston, TX 77019 | Oil & Gas Operator | Nov 2024 |
| 6426 | Copper Land Resources LLC | | Oil Operator | Aug 2024 |
| 6427 | Copper Ridge Oil Inc | Olean, NY 14760 | Oil & Gas Operator | Dec 2023 |
| 6428 | Copper Ridge Resources LLC | Midland, TX 79710 | Oil Operator | Jul 2024 |
| 6429 | Copperhead Creek Enterprises, Inc. | Chautauqua, KS 67334 | Oil Operator | Sep 2019 |
| 6430 | Copperhead Enterprises LLC | Ludlow, PA 16333-0057 | Oil & Gas Operator | Dec 2023 |
| 6431 | Copperhead Oil | Colony, KS 66015 | Oil Operator | Sep 1985 |
| 6432 | Copperhead Oil & Gas, LTD. | San Antonio, TX 78209 | Oil & Gas Operator | Dec 2017 |
| 6433 | Coppertop | San Angelo, TX 76904 | Oil & Gas Operator | Nov 2024 |
| 6434 | Coppock Herb Energy | Fairview, OK 73737-1037 | Oil & Gas Operator | May 2018 |
| 6435 | Coquina Oil Corporation | Houston, TX 77227 | Oil & Gas Operator | Mar 2015 |
| 6436 | Coral Coast Petroleum, L.C. | Wichita, KS 67226 | Oil & Gas Operator | Nov 2019 |
| 6437 | Coral E&P, LLC | Adkins, TX 78101 | Oil & Gas Operator | Nov 2024 |
| 6438 | Coral Production Corporation | Denver, CO 80201 | Oil & Gas Operator | Aug 2024 |
| 6439 | Corbell Wayne L | Fort Worth, TX 76111-4615 | Oil & Gas Operator | Apr 2023 |
| 6440 | Corbell, W. D. | Dublin, TX 76446 | Oil & Gas Operator | Dec 2001 |
| 6441 | Corda Corporation | Wichita Falls, TX 76302 | Oil & Gas Operator | Nov 2024 |
| 6442 | Cordele Development Corporation | San Antonio, TX 78205 | Oil & Gas Operator | Nov 2024 |
| 6443 | Cordero Energy Operating LLC | Dallas, TX 75219 | Oil & Gas Operator | Jan 2020 |
| 6444 | Cordero Mining Co | Gillette, WY 82717 | Oil Operator | Nov 2009 |
| 6445 | Cordero Oil And Gas LLC | Gillette, WY 82716 | Oil Operator | Nov 2021 |
| 6446 | Cordex Petroleums, Inc. | | Oil & Gas Operator | Jun 1996 |
| 6447 | Cordillera Corporation | Denver, CO 80237 | Oil & Gas Operator | Feb 1996 |
| 6448 | Cordillera Energy Partners II LLC | Greenwood VIllage, CO 80111-2856 | Oil & Gas Operator | Jul 2024 |
| 6449 | Cordillera Energy Partners III LLC | Greenwood VIllage, CO 80111-2856 | Oil & Gas Operator | Mar 2014 |
| 6450 | Cordillera Energy Partners, LLC | Greenwood VLG, CO 80111 | Oil & Gas Operator | Mar 2020 |
| 6451 | Cordillera Energy PRTNRS III,LLC | Houston, TX 77056 | Oil & Gas Operator | Apr 2012 |
| 6452 | Cordillera Texas, L.P. | Greenwood VLG, CO 80111 | Oil & Gas Operator | Sep 2008 |
| 6453 | Core Appalachia Operating LLC | Charleston, WV 25362 | Oil & Gas Operator | Dec 2020 |
| 6454 | Core E & P Corp. | Victoria, TX 77902 | Oil & Gas Operator | Nov 2024 |
| 6455 | Core Energy LLC | | Oil & Gas Operator | Aug 2024 |
| 6456 | Core Minerals Operating Co Inc | | Oil & Gas Operator | Dec 2021 |
| 6457 | Core Petro, LLC | Abilene, TX 79608 | Oil & Gas Operator | Nov 2024 |
| 6458 | Core Solutions LLC | | Oil & Gas Operator | Dec 2021 |
| 6459 | Corenergy Operating Group, LLC | Houston, TX 77074 | Oil & Gas Operator | Nov 2024 |
| 6460 | Coreterra Operating, LLC | Pampa, TX 79065 | Oil & Gas Operator | Nov 2024 |
| 6461 | Corfu Darien Properties, LLC | Corfu, NY 14036 | Gas Operator | Dec 2023 |
| 6462 | Corgray Holdings, LLC | Fulshear, TX 77441 | Gas Operator | Mar 2016 |
| 6463 | Corie Oil Co., Inc. | Russell, KS 67665 | Oil Operator | Feb 2003 |
| 6464 | Corie Oil Compan | | Oil Operator | Jul 1985 |
| 6465 | Corinne Grace | Carlsbad, NM 88220 | Oil & Gas Operator | Jan 2011 |
| 6466 | Corinthian Exploration (USA) Corp | | Oil & Gas Operator | Apr 2016 |
| 6467 | Cork Petroleum Corporation | Thermopolis, WY 82443 | Oil & Gas Operator | Apr 2012 |
| 6468 | Corkran Energy, LP | Ignacio, CO 81137 | Oil & Gas Operator | May 2013 |
| 6469 | Corlena Oil Company | Amarillo, TX 79101 | Oil & Gas Operator | Nov 2024 |
| 6470 | Corley G R | | Oil & Gas Operator | Jun 2009 |
| 6471 | Corley Production Company | Wilson, OK 73463-7218 | Oil Operator | Sep 2024 |
| 6472 | Corley Production Inc | Comanche, OK 73529-4668 | Oil Operator | Mar 2015 |
| 6473 | Corley Trust, LLC | Smackover, AR 71762 | Oil Operator | Feb 2020 |
| 6474 | Corley, Henry Oil Properties LLC | El Dorado, AR 71730 | Oil Operator | Jul 2024 |
| 6475 | Corman, Jack | Dallas, TX 75231 | Oil & Gas Operator | May 2022 |
| 6476 | Cornelius Dale | Willow, OK 73673 | Oil Operator | Aug 2024 |
| 6477 | Cornelius Oil Company | Kellyville, OK 74039-0459 | Oil & Gas Operator | Jul 2015 |
| 6478 | Cornelius Oil Inc | Kellyville, OK 74039 | Oil & Gas Operator | Aug 2024 |
| 6479 | Cornelius Petroleum Inc | Kellyville, OK 74039 | Oil & Gas Operator | Aug 2024 |
| 6480 | Cornelius Phillip J & Connie | Kellyville, OK 74039 | Oil & Gas Operator | Dec 2000 |
| 6481 | Cornelius Tony | Sapulpa, OK 74066-5845 | Oil & Gas Operator | Jul 2024 |
| 6482 | Cornell Glen R | Pauls Valley, OK 73075-9606 | Oil & Gas Operator | Oct 2013 |
| 6483 | Cornell Oil Company | | Oil & Gas Operator | May 1985 |
| 6484 | Cornell Rich M - | | Oil & Gas Operator | May 1993 |
| 6485 | Corner Energy LLC | Oklahoma City, OK 73156-0548 | Oil & Gas Operator | Mar 2015 |
| 6486 | Corner Operating Company, Inc | New York, NY 10165 | Oil & Gas Operator | Dec 1999 |
| 6487 | Cornerstone E & P Company, LP | Irving, TX 75038 | Oil & Gas Operator | Nov 2010 |
| 6488 | Cornerstone Energy, Inc. | Houston, TX 77060 | Oil & Gas Operator | Nov 2011 |
| 6489 | Cornerstone Energy, LLC | Magnolia, AR 71753 | Oil & Gas Operator | May 2024 |
| 6490 | Cornerstone Gas Processing Inc | | Oil Operator | Jan 1999 |
| 6491 | Cornerstone Natural Gas Co. | | Oil Operator | Oct 1999 |
| 6492 | Cornerstone Natural Resources LLC | Denver, CO 80234 | Oil & Gas Operator | Sep 2024 |
| 6493 | Cornerstone Oil Trust | San Antonio, TX 78251 | Oil & Gas Operator | Jul 2003 |
| 6494 | Cornie Creek Corporation | Magnolia, AR 71753 | Oil & Gas Operator | Jul 2024 |
| 6495 | Corning Oil Co Inc | Sonora, OH 43785 | Oil & Gas Operator | Dec 2002 |
| 6496 | Cornwell Well Service, Inc. | | Oil & Gas Operator | Feb 2010 |
| 6497 | Cornwell, G. G. | | Oil & Gas Operator | Sep 2009 |
| 6498 | Corona Development Co. Inc. | | Oil Operator | Dec 1989 |
| 6499 | Corona Exploration, Inc. | Midland, TX 79702 | Oil & Gas Operator | Nov 2024 |
| 6500 | Corona Operating, LLC | Midland, TX 79702 | Oil Operator | Nov 2024 |