| 6701 | Corpening, Joe F. | Bowie, TX 76230 | Oil & Gas Operator | Oct 2013 |
| 6702 | Corpus Christi Leaseholds, Inc. | Corpus Chrsti, TX 78403 | Oil & Gas Operator | Sep 1996 |
| 6703 | Corpus Christi Oil & Gas Co. | | Oil & Gas Operator | Dec 1991 |
| 6704 | Correll, Spencer | Perryton, TX 79070 | Oil & Gas Operator | Feb 2026 |
| 6705 | Corrida Oil Inc | Denver, CO 80217 | Oil & Gas Operator | Jun 1990 |
| 6706 | Corriente Operating Company LLC | Taft, TX 78390 | Oil & Gas Operator | Feb 2026 |
| 6707 | Corsa Resources, LLC | Houston, TX 77002 | Oil & Gas Operator | Feb 2026 |
| 6708 | Corsair Energy, LC | Wichita, KS 67202 | Oil & Gas Operator | Apr 2004 |
| 6709 | Corsicana Crude Company, LLC | Denver, CO 80202 | Oil Operator | Feb 2026 |
| 6710 | Corsicana Crude Holdings, LLC | Denver, CO 80202 | Oil Operator | Feb 2026 |
| 6711 | Corsicana Field Fund | Corsicana, TX 75110 | Oil & Gas Operator | Dec 1993 |
| 6712 | Corsicana Oil & Gas | Corsicana, TX 75151 | Oil Operator | Feb 2026 |
| 6713 | Cortam, Inc. | Augusta, KS 67010 | Oil Operator | Dec 2024 |
| 6714 | Corterra Energy Operating LLC | Tulsa, OK 74119-4844 | Oil & Gas Operator | Aug 2021 |
| 6715 | Cortex Energy, Inc. | Wichita, KS 67217 | Oil & Gas Operator | Dec 2024 |
| 6716 | Cortez Operating Company | Fort Worth, TX 76102 | Oil & Gas Operator | Nov 2016 |
| 6717 | Cortland Energy Co Inc | Worthington, OH 43085 | Oil & Gas Operator | Dec 2024 |
| 6718 | Corum Production Co.-Tepco | | Oil & Gas Operator | Dec 1989 |
| 6719 | Corum Production Company | Houston, TX 77002 | Oil & Gas Operator | Feb 2026 |
| 6720 | Corvette Oil Corporation | Fort Worth, TX 76115 | Oil & Gas Operator | Mar 2008 |
| 6721 | Corwin B V | Enid, OK 73701 | Oil & Gas Operator | Apr 2017 |
| 6722 | Cory, Kenneth W. | Bellaire, TX 77401 | Oil & Gas Operator | Mar 2012 |
| 6723 | Cory, Kenneth W. LTD. | Bellaire, TX 77401 | Oil & Gas Operator | Feb 2026 |
| 6724 | Coseka Resources USA LTD | Denver, CO 80202-1602 | Oil & Gas Operator | Jun 1988 |
| 6725 | Cosgriff Joe | Detroit, MI 48208 | Oil & Gas Operator | Dec 1998 |
| 6726 | Coshocton Pipe Co | Columbus, OH 43229 | Oil & Gas Operator | Dec 1989 |
| 6727 | Cosper Well/H Cosper | Logan, OH 43138 | Oil & Gas Operator | Dec 1996 |
| 6728 | Costa Energy, LLC | Irving, TX 75063 | Oil & Gas Operator | Feb 2026 |
| 6729 | Costa Loma LTD. | | Oil & Gas Operator | Oct 2025 |
| 6730 | Costa Resources, Inc. | Dallas, TX 75209 | Oil & Gas Operator | Aug 2003 |
| 6731 | Costilla Energy, Inc. | Midland, TX 79702 | Oil & Gas Operator | Mar 2008 |
| 6732 | Costilla Petroleum Corporation | Midland, TX 79702 | Oil & Gas Operator | Mar 2015 |
| 6733 | Coteau Energy LLC | | Oil & Gas Operator | Dec 2024 |
| 6734 | Coterra Energy Inc | Pittsburgh, PA 15275-1121 | Oil & Gas Operator | Nov 2025 |
| 6735 | Coterra Energy Operating Co. | Midland, TX 79706 | Oil & Gas Operator | Feb 2026 |
| 6736 | Coterra Energy Operating E LLC | Midland, TX 79706 | Oil & Gas Operator | Nov 2025 |
| 6737 | Coterra Energy Operating F LLC | Midland, TX 79706 | Oil & Gas Operator | Nov 2025 |
| 6738 | Coterra Energy Operating M LLC | Midland, TX 79706 | Oil & Gas Operator | Aug 2019 |
| 6739 | Cotiga Development Company, Limited Partnership | Williamson, WV 25661-0000 | Oil & Gas Operator | Dec 2021 |
| 6740 | Cotton County Ventures | Estes Park, CO 80517 | Oil Operator | Nov 2003 |
| 6741 | Cotton Petroleum | | Oil & Gas Operator | May 1988 |
| 6742 | Cotton Petroleum Corp/Apc | Denver, CO 80203-4549 | Oil & Gas Operator | Nov 1990 |
| 6743 | Cotton Petroleum Corporation | Tulsa, OK 74102 | Oil & Gas Operator | Jan 2005 |
| 6744 | Cotton Valley Operating Company | Oklahoma City, OK 73102 | Oil & Gas Operator | May 2000 |
| 6745 | Cotton Valley Operations, Inc. | Longview, TX 75608 | Oil & Gas Operator | Feb 2026 |
| 6746 | Cotton Valley Resources, LLC | Kilgore, TX 75663 | Oil & Gas Operator | Feb 2025 |
| 6747 | Cotton Well Drilling Co Inc | Sheridan, NY 14135 | Oil & Gas Operator | Dec 2024 |
| 6748 | Cotton, W. L. | Hebbronville, TX 78361 | Oil & Gas Operator | Mar 1996 |
| 6749 | Cotton, W.L. Gems & Minerals LTD | Hebbronville, TX 78361 | Oil & Gas Operator | May 2000 |
| 6750 | Cottonmouth SWD LLC | Tulsa, OK 74103-3522 | Oil Operator | Oct 2025 |
| 6751 | Cottonwood Oil C | | Oil & Gas Operator | Oct 1988 |
| 6752 | Cottonwood Oil Inc | Worland, WY 82401 | Oil & Gas Operator | Jun 1988 |
| 6753 | Cottonwood Opr Corp | Dubois, PA 15801-0403 | Gas Operator | Dec 1989 |
| 6754 | Cottonwood Petroleum Co. | Abilene, TX 79603 | Oil & Gas Operator | Jun 2009 |
| 6755 | Cottonwood Prod Co Inc | Buffalo, NY 14202-2212 | Gas Operator | Dec 2002 |
| 6756 | Cottonwood Resources, Inc. | Kilgore, TX 75663 | Oil & Gas Operator | Aug 2003 |
| 6757 | Couch Donald W | Marlow, OK 73055 | Oil & Gas Operator | Nov 2025 |
| 6758 | Couch Fred J | Broken Arrow, OK 74012 | Oil Operator | Mar 2010 |
| 6759 | Couch Oil & Gas, Inc. | Dallas, TX 75229 | Oil & Gas Operator | Feb 2026 |
| 6760 | Couch, Gilbert | Kilgore, TX 75663 | Oil & Gas Operator | Feb 2026 |
| 6761 | Couch, Harry L. | Odessa, TX 79762 | Oil & Gas Operator | Nov 1994 |
| 6762 | Cougar Energies, Inc. | Oberlin, KS 67749 | Oil Operator | Jun 1996 |
| 6763 | Cougar Energy Inc | Oil City, PA 16301-4046 | Oil & Gas Operator | Dec 2013 |
| 6764 | Cougar Energy Investment LLC | Spring, TX 77387-7277 | Oil & Gas Operator | Sep 2014 |
| 6765 | Cougar Exploration, Inc. | | Oil & Gas Operator | Jun 1988 |
| 6766 | Cougar Oil | | Oil Operator | Jul 2025 |
| 6767 | Cougar Oil & Gas Co., Inc. | Houston, TX 77269 | Oil & Gas Operator | Mar 2008 |
| 6768 | Cougar Oil, Inc. | Henderson, TX 75653 | Oil & Gas Operator | Jun 2009 |
| 6769 | Coughlin, Daniel L | | Oil Operator | Aug 2000 |
| 6770 | Coulthurst MGT & Inv Inc | Reno, NV 89504 | Oil Operator | Sep 2020 |
| 6771 | Council Oak Resources LLC | Tulsa, OK 74103-3500 | Oil & Gas Operator | Sep 2025 |
| 6772 | Country Boy Oil Co Inc | | Oil Operator | Nov 2017 |
| 6773 | Country Side Sand & Gravel, Inc | Collins, NY 14034 | Gas Operator | Dec 2024 |
| 6774 | Countrymark Energy Resources L L C | MT Vernon, IN 47620 | Oil & Gas Operator | Dec 2023 |
| 6775 | County Line Stone Co., Inc. | Akron, NY 14001 | Gas Operator | Dec 2024 |
| 6776 | County Line Stripper Wells LLC | Chelsea, OK 74016 | Oil & Gas Operator | Oct 2025 |
| 6777 | County Management, Inc. | Houston, TX 77055 | Oil & Gas Operator | Apr 1993 |
| 6778 | Countyline Production Co LLC | Duncan, OK 73533 | Oil Operator | Oct 2025 |
| 6779 | Couroil, Inc. | Perryton, TX 79070 | Oil & Gas Operator | Sep 2000 |
| 6780 | Courson Oil & Gas, Inc. | Perryton, TX 79070 | Oil & Gas Operator | Feb 2026 |
| 6781 | Courson, Harold D. | Perryton, TX 79070 | Oil & Gas Operator | Aug 1998 |
| 6782 | Courtland City Lights Assoc. | | Oil Operator | Dec 2005 |
| 6783 | Courtney Oil Co. | | Oil Operator | Dec 1998 |
| 6784 | Coushatta Oil & Gas Inc. | | Oil & Gas Operator | Jan 2007 |
| 6785 | Cousins Exploration Co | Wichita Falls, TX 76307 | Oil Operator | Jun 1991 |
| 6786 | Cove Petroleum Corporation | Shreveport, LA 71101 | Oil & Gas Operator | Jun 2020 |
| 6787 | Covenant Oil & Gas, L.P. | Houston, TX 77057 | Oil & Gas Operator | Dec 2006 |
| 6788 | Covenant Oil Company | Houma, LA 70360 | Oil & Gas Operator | Dec 2015 |
| 6789 | Covenant Oil Corp | Broken Arrow, OK 74014 | Oil & Gas Operator | May 2013 |
| 6790 | Covenant Operating, LLC | Wichita Falls, TX 76308 | Oil Operator | Feb 2026 |
| 6791 | Covenant Production Co., L.C. | Midland, TX 79702 | Oil & Gas Operator | Nov 2002 |
| 6792 | Covert, Christopher P. | Auburn, NY 13021 | Gas Operator | Dec 2024 |
| 6793 | Covey Energy, Inc. | | Oil & Gas Operator | Jun 1998 |
| 6794 | Covey Park Gas LLC | | Oil & Gas Operator | Aug 2019 |
| 6795 | Covey Park Operating LLC | Dallas, TX 75225 | Oil & Gas Operator | Aug 2019 |
| 6796 | Covey Park Resources LLC | Frisco, TX 75034 | Oil & Gas Operator | Aug 2019 |
| 6797 | Covington Oil Company Inc | Nichols Hills, OK 73116 | Oil & Gas Operator | Nov 2025 |
| 6798 | Cow Creek Resources Inc | Ponca City, OK 74601-7815 | Oil & Gas Operator | Nov 2025 |
| 6799 | Cow Run LTD Liability Company | Davidson, NC 28036 | Oil & Gas Operator | Nov 2018 |
| 6800 | Cowan Oil Company | | Oil Operator | Sep 1990 |