| 6601 | Cornelius Phillip J & Connie | Kellyville, OK 74039 | Oil & Gas Operator | Dec 2000 |
| 6602 | Cornelius Tony | Sapulpa, OK 74066-5845 | Oil & Gas Operator | Dec 2024 |
| 6603 | Cornelius, Steven L | | Oil Operator | Sep 2015 |
| 6604 | Cornell Glen R | Pauls Valley, OK 73075-9606 | Oil & Gas Operator | Oct 2013 |
| 6605 | Cornell Oil Company | | Oil & Gas Operator | May 1985 |
| 6606 | Cornell Rich M - | | Oil & Gas Operator | May 1993 |
| 6607 | Corner Energy LLC | Oklahoma City, OK 73156-0548 | Oil & Gas Operator | Mar 2015 |
| 6608 | Corner Operating Company, Inc | New York, NY 10165 | Oil & Gas Operator | Dec 1999 |
| 6609 | Cornerstone E & P Company LP | Irving, TX 75038 | Oil & Gas Operator | Nov 2010 |
| 6610 | Cornerstone Energy, Inc. | Houston, TX 77060 | Oil & Gas Operator | Nov 2011 |
| 6611 | Cornerstone Energy, LLC | Magnolia, AR 71753 | Oil & Gas Operator | Nov 2024 |
| 6612 | Cornerstone Gas Processing Inc | | Oil Operator | Jan 1999 |
| 6613 | Cornerstone Minerals LTD | | Oil & Gas Operator | Dec 2009 |
| 6614 | Cornerstone Mining, LLC | | Gas Operator | Sep 2019 |
| 6615 | Cornerstone Natural Gas Co. | | Oil Operator | Oct 1999 |
| 6616 | Cornerstone Natural Resources LLC | Denver, CO 80234 | Oil & Gas Operator | Mar 2025 |
| 6617 | Cornerstone Oil Trust | San Antonio, TX 78251 | Oil & Gas Operator | Jul 2003 |
| 6618 | Cornie Creek Corporation | Magnolia, AR 71753 | Oil & Gas Operator | Jan 2025 |
| 6619 | Corning Oil Co Inc | Sonora, OH 43785 | Oil & Gas Operator | Dec 2002 |
| 6620 | Cornwell Well Service, Inc. | | Oil & Gas Operator | Feb 2010 |
| 6621 | Cornwell, G. G. | | Oil & Gas Operator | Sep 2009 |
| 6622 | Corona Development Co. Inc. | | Oil Operator | Dec 1989 |
| 6623 | Corona Exploration, Inc. | Midland, TX 79702 | Oil & Gas Operator | May 2025 |
| 6624 | Corona Operating, LLC | Midland, TX 79702 | Oil Operator | May 2025 |
| 6625 | Coronado Energy E&P Company, LLC | Houston, TX 77252 | Oil & Gas Operator | Dec 2010 |
| 6626 | Coronado Energy Partners LLC | Tulsa, OK 74136 | Oil & Gas Operator | Feb 2025 |
| 6627 | Coronado Great Plains LLC | Tulsa, OK 74137-2832 | Gas Operator | Apr 2013 |
| 6628 | Coronado Kansas, LLC | Tulsa, OK 74133 | Oil Operator | Oct 2009 |
| 6629 | Coronado Minerals, LLC | Houston, TX 77208 | Oil & Gas Operator | May 2025 |
| 6630 | Coronado Oil | Lindsborg, KS 67456 | Oil Operator | Sep 1985 |
| 6631 | Coronado Oil & G | | Oil Operator | Dec 1996 |
| 6632 | Coronado Oil & Gas, Inc. | Great Bend, KS 67530 | Oil Operator | Jul 2004 |
| 6633 | Coronado Oil & Minerals Co. | | Oil & Gas Operator | Sep 1980 |
| 6634 | Coronado Oil Company | Denver, CO 80202 | Oil & Gas Operator | Dec 2019 |
| 6635 | Coronado Oil, Inc. | Salina, KS 67401 | Oil Operator | May 1990 |
| 6636 | Coronado Oklahoma LLC | Tulsa, OK 74133-7036 | Gas Operator | Apr 2020 |
| 6637 | Coronado Petroleum Corporation | Oklahoma City, OK 73102-4803 | Oil & Gas Operator | Feb 2025 |
| 6638 | Corpening, Joe F. | Bowie, TX 76230 | Oil & Gas Operator | Oct 2013 |
| 6639 | Corpus Christi Leaseholds, Inc. | Corpus Chrsti, TX 78403 | Oil & Gas Operator | Sep 1996 |
| 6640 | Corpus Christi Oil & Gas Co. | | Oil & Gas Operator | Dec 1991 |
| 6641 | Correll, Spencer | Perryton, TX 79070 | Oil & Gas Operator | May 2025 |
| 6642 | Corrida Oil Inc | Denver, CO 80217 | Oil & Gas Operator | Jun 1990 |
| 6643 | Corriente Operating Company LLC | Taft, TX 78390 | Oil & Gas Operator | May 2025 |
| 6644 | Corsa Resources, LLC | Houston, TX 77002 | Oil & Gas Operator | May 2025 |
| 6645 | Corsair Energy, LC | Wichita, KS 67202 | Oil & Gas Operator | Apr 2004 |
| 6646 | Corsicana Crude Company, LLC | Denver, CO 80202 | Oil Operator | May 2025 |
| 6647 | Corsicana Crude Holdings, LLC | Denver, CO 80202 | Oil Operator | May 2025 |
| 6648 | Corsicana Field Fund | Corsicana, TX 75110 | Oil & Gas Operator | Dec 1993 |
| 6649 | Corsicana Oil & Gas | Corsicana, TX 75151 | Oil Operator | May 2025 |
| 6650 | Cortam, Inc. | Augusta, KS 67010 | Oil Operator | Dec 2024 |
| 6651 | Corterra Energy Operating LLC | Tulsa, OK 74119-4844 | Oil & Gas Operator | Aug 2021 |
| 6652 | Cortex Energy, Inc. | Wichita, KS 67217 | Oil & Gas Operator | Dec 2024 |
| 6653 | Cortez Operating Company | Fort Worth, TX 76102 | Oil & Gas Operator | Nov 2016 |
| 6654 | Cortland Energy Co Inc | Worthington, OH 43085 | Oil & Gas Operator | Dec 2024 |
| 6655 | Corum Operating Company, LLC | Houston, TX 77055 | Oil & Gas Operator | May 2025 |
| 6656 | Corum Production Co.-Tepco | | Oil & Gas Operator | Dec 1989 |
| 6657 | Corum Production Company | Houston, TX 77002 | Oil & Gas Operator | May 2025 |
| 6658 | Corvette Oil Corporation | Fort Worth, TX 76115 | Oil & Gas Operator | Mar 2008 |
| 6659 | Corwin, B. V. | Enid, OK 73701 | Oil & Gas Operator | Apr 2017 |
| 6660 | Cory, Kenneth W. | Bellaire, TX 77401 | Oil & Gas Operator | Mar 2012 |
| 6661 | Cory, Kenneth W. LTD. | Bellaire, TX 77401 | Oil & Gas Operator | May 2025 |
| 6662 | Coseka Resources USA LTD | Denver, CO 80202-1602 | Oil & Gas Operator | Jun 1988 |
| 6663 | Cosgriff Joe | Detroit, MI 48208 | Oil & Gas Operator | Dec 1998 |
| 6664 | Coshocton Pipe Co | Columbus, OH 43229 | Oil & Gas Operator | Dec 1989 |
| 6665 | Costa Energy, LLC | Irving, TX 75063 | Oil & Gas Operator | May 2025 |
| 6666 | Costa Loma LTD. | | Oil & Gas Operator | Feb 2025 |
| 6667 | Costa Resources, Inc. | Dallas, TX 75209 | Oil & Gas Operator | Aug 2003 |
| 6668 | Costilla Energy Inc | Midland, TX 79702 | Oil & Gas Operator | Mar 2008 |
| 6669 | Costilla Petroleum Corporation | Midland, TX 79702 | Oil & Gas Operator | Mar 2015 |
| 6670 | Coteau Energy LLC | | Oil & Gas Operator | Dec 2024 |
| 6671 | Coterra Energy Inc | Pittsburgh, PA 15275-1121 | Oil & Gas Operator | Mar 2025 |
| 6672 | Coterra Energy Operating Co. | Midland, TX 79706 | Oil & Gas Operator | Mar 2025 |
| 6673 | Cotiga Development Company, Limited Partnership | Williamson, WV 25661-0000 | Oil & Gas Operator | Dec 2021 |
| 6674 | Cotton County Ventures | Estes Park, CO 80517 | Oil Operator | Nov 2003 |
| 6675 | Cotton Petroleum | | Oil & Gas Operator | May 1988 |
| 6676 | Cotton Petroleum Corp/Apc | Denver, CO 80203-4549 | Oil & Gas Operator | Nov 1990 |
| 6677 | Cotton Petroleum Corporation | Tulsa, OK 74102 | Oil & Gas Operator | Jan 2005 |
| 6678 | Cotton Valley Operating Company | Oklahoma City, OK 73102 | Oil & Gas Operator | May 2000 |
| 6679 | Cotton Valley Operations, Inc. | Longview, TX 75608 | Oil & Gas Operator | May 2025 |
| 6680 | Cotton Valley Resources, LLC | Kilgore, TX 75663 | Oil & Gas Operator | Feb 2025 |
| 6681 | Cotton Well Drilling Co Inc | Sheridan, NY 14135 | Oil & Gas Operator | Dec 2023 |
| 6682 | Cotton, W. L. | Hebbronville, TX 78361 | Oil & Gas Operator | Mar 1996 |
| 6683 | Cotton, W.L. Gems & Minerals LTD | Hebbronville, TX 78361 | Oil & Gas Operator | May 2000 |
| 6684 | Cottonmouth SWD LLC | Tulsa, OK 74103-3522 | Oil Operator | Feb 2025 |
| 6685 | Cottonwood Oil C | | Oil & Gas Operator | Oct 1988 |
| 6686 | Cottonwood Oil Inc | Worland, WY 82401 | Oil & Gas Operator | Jun 1988 |
| 6687 | Cottonwood Opr Corp | Dubois, PA 15801-0403 | Gas Operator | Dec 1989 |
| 6688 | Cottonwood Petroleum Co. | Abilene, TX 79603 | Oil & Gas Operator | Jun 2009 |
| 6689 | Cottonwood Prod Co Inc | Buffalo, NY 14202-2212 | Gas Operator | Dec 2002 |
| 6690 | Cottonwood Resources, Inc. | Kilgore, TX 75663 | Oil & Gas Operator | Aug 2003 |
| 6691 | Couch Donald W | Marlow, OK 73055 | Oil & Gas Operator | Mar 2025 |
| 6692 | Couch Fred J | Broken Arrow, OK 74012 | Oil Operator | Mar 2010 |
| 6693 | Couch Oil & Gas, Inc. | Dallas, TX 75229 | Oil & Gas Operator | May 2025 |
| 6694 | Couch, Gilbert | Kilgore, TX 75663 | Oil & Gas Operator | May 2025 |
| 6695 | Couch, Harry L. | Odessa, TX 79762 | Oil & Gas Operator | Nov 1994 |
| 6696 | Cougar Energies, Inc. | Oberlin, KS 67749 | Oil Operator | Jun 1996 |
| 6697 | Cougar Energy Inc | Oil City, PA 16301-4046 | Oil & Gas Operator | Dec 2013 |
| 6698 | Cougar Energy Investment LLC | Spring, TX 77387-7277 | Oil & Gas Operator | Sep 2014 |
| 6699 | Cougar Exploration, Inc. | | Oil & Gas Operator | Jun 1988 |
| 6700 | Cougar Oil | | Oil Operator | Feb 2025 |