| 6701 | Cougar Oil & Gas Co., Inc. | Houston, TX 77269 | Oil & Gas Operator | Mar 2008 |
| 6702 | Cougar Oil, Inc. | Henderson, TX 75653 | Oil & Gas Operator | Jun 2009 |
| 6703 | Coughlin, Daniel L | | Oil Operator | Aug 2000 |
| 6704 | Coulthurst MGT & Inv Inc | Reno, NV 89504 | Oil Operator | Sep 2020 |
| 6705 | Council Oak Resources LLC | Tulsa, OK 74103-3500 | Oil & Gas Operator | Mar 2025 |
| 6706 | Country Boy Oil Co Inc | | Oil Operator | Nov 2017 |
| 6707 | Country Side Sand & Gravel, Inc | Collins, NY 14034 | Gas Operator | Dec 2023 |
| 6708 | Countrymark Energy Resources, LLC | MT Vernon, IN 47620 | Oil & Gas Operator | Dec 2023 |
| 6709 | County Line Stone Co., Inc. | Akron, NY 14001 | Gas Operator | Dec 2023 |
| 6710 | County Line Stripper Wells LLC | Chelsea, OK 74016 | Oil & Gas Operator | Feb 2025 |
| 6711 | County Management, Inc. | Houston, TX 77055 | Oil & Gas Operator | Apr 1993 |
| 6712 | Countyline Production Co LLC | Duncan, OK 73533 | Oil Operator | Mar 2025 |
| 6713 | Couroil, Inc. | Perryton, TX 79070 | Oil & Gas Operator | Sep 2000 |
| 6714 | Courson Oil & Gas, Inc. | Perryton, TX 79070 | Oil & Gas Operator | May 2025 |
| 6715 | Courson, Harold D. | Perryton, TX 79070 | Oil & Gas Operator | Aug 1998 |
| 6716 | Courtland City Lights Assoc. | | Oil Operator | Dec 2005 |
| 6717 | Courtney Oil Co. | | Oil Operator | Dec 1998 |
| 6718 | Courtwright Management, Inc. | Bridgeport, WV 26330 | Gas Operator | Dec 2021 |
| 6719 | Coushatta Oil & Gas Inc. | | Oil & Gas Operator | Jan 2007 |
| 6720 | Cousins Exploration Co | Wichita Falls, TX 76307 | Oil Operator | Jun 1991 |
| 6721 | Covalent Exploration Incorporated | Houston, TX 77079 | Oil Operator | May 2025 |
| 6722 | Cove Petroleum Corporation | Shreveport, LA 71101 | Oil & Gas Operator | Jun 2020 |
| 6723 | Covenant Oil & Gas, L.P. | Houston, TX 77057 | Oil & Gas Operator | Dec 2006 |
| 6724 | Covenant Oil Company | Houma, LA 70360 | Oil & Gas Operator | Dec 2015 |
| 6725 | Covenant Oil Corp | Broken Arrow, OK 74014 | Oil & Gas Operator | May 2013 |
| 6726 | Covenant Operating, LLC | Wichita Falls, TX 76308 | Oil Operator | May 2025 |
| 6727 | Covenant Production Co., L.C. | Midland, TX 79702 | Oil & Gas Operator | Nov 2002 |
| 6728 | Covered H Energy, LLC | Lubbock, TX 79423 | Oil Operator | May 2025 |
| 6729 | Covert, Christopher P. | Auburn, NY 13021 | Gas Operator | Dec 2023 |
| 6730 | Covey Energy, Inc. | | Oil & Gas Operator | Jun 1998 |
| 6731 | Covey Park Gas LLC | | Oil & Gas Operator | Aug 2019 |
| 6732 | Covey Park Operating LLC | Dallas, TX 75225 | Oil & Gas Operator | Aug 2019 |
| 6733 | Covey Park Resources LLC | Frisco, TX 75034 | Oil & Gas Operator | Aug 2019 |
| 6734 | Covington Oil Company Inc | Nichols Hills, OK 73116 | Oil & Gas Operator | Mar 2025 |
| 6735 | Cow Creek Resources Inc | Ponca City, OK 74601-7815 | Oil & Gas Operator | Jan 2025 |
| 6736 | Cow Run LTD Liability Company | Davidson, NC 28036 | Oil & Gas Operator | Nov 2018 |
| 6737 | Cowan Oil Company | | Oil Operator | Sep 1990 |
| 6738 | Cowboy Clean Fuels LLC | Laramie, WY 82072 | Gas Operator | Feb 2025 |
| 6739 | Cowboy Oil & Gas | Bristow, OK 74010-0057 | Oil & Gas Operator | Jul 2018 |
| 6740 | Cowboy Operating LLC | Oklahoma City, OK 73120 | Oil Operator | Feb 2025 |
| 6741 | Cowboys Resources Corp. | New Braunfels, TX 78132 | Oil Operator | Jan 2008 |
| 6742 | Cowden SR Lester L | Oklahoma City, OK 73118-4011 | Oil & Gas Operator | Sep 1999 |
| 6743 | Cowen Michael T | | Oil & Gas Operator | Dec 2009 |
| 6744 | Cowles James C | Muskogee, OK 74401-5262 | Oil Operator | Jan 2025 |
| 6745 | Cowley Energy Associates, LLC | Plano, TX 75093 | Gas Operator | Dec 2009 |
| 6746 | Cowrie Energy LLC | Austin, TX 78703 | Oil & Gas Operator | May 2025 |
| 6747 | Cowry Enterprises, LTD. | Littleton, CO 80161-3310 | Oil & Gas Operator | Mar 2022 |
| 6748 | Cox & Perkins Exploration, Inc. | Houston, TX 77057 | Oil & Gas Operator | May 2025 |
| 6749 | Cox Edwin L & Be | | Oil & Gas Operator | Nov 1989 |
| 6750 | Cox Edwin L & Berry R | | Oil & Gas Operator | Oct 1987 |
| 6751 | Cox Edwin L & R Berry | Dallas, TX 75202 | Oil & Gas Operator | Apr 2015 |
| 6752 | Cox Elmer N | Irving, TX 75181 | Oil Operator | Aug 2013 |
| 6753 | Cox Engineering, LLC | Abilene, TX 79605 | Oil Operator | Mar 2006 |
| 6754 | Cox Exploration, Inc. | Dallas, TX 75201 | Oil & Gas Operator | Nov 1999 |
| 6755 | Cox Gas Corporation | Dallas, TX 75201-7306 | Oil & Gas Operator | Apr 2015 |
| 6756 | Cox Kendall Jay | Recluse, WY 28775 | Oil & Gas Operator | Aug 2016 |
| 6757 | Cox Linda | Bristow, OK 74010-0808 | Oil & Gas Operator | Jan 2018 |
| 6758 | Cox Oil & Gas, Inc. | Dallas, TX 75201 | Oil & Gas Operator | Mar 2014 |
| 6759 | Cox Operating Co. | Wichita Falls, TX 76310 | Oil & Gas Operator | Jun 2000 |
| 6760 | Cox Operating, L.L.C. | | Oil & Gas Operator | Jan 2024 |
| 6761 | Cox P D Inc | Bristow, OK 74010 | Oil & Gas Operator | May 1993 |
| 6762 | Cox Resources Corporation | Dallas, TX 75244 | Oil & Gas Operator | Mar 2015 |
| 6763 | Cox Robert L | Blackwell, OK 74631 | Oil & Gas Operator | Dec 2024 |
| 6764 | Cox, Gary L | | Oil Operator | Mar 2022 |
| 6765 | Cox, H. L. | Wichita Falls, TX 76307 | Oil & Gas Operator | Jan 2011 |
| 6766 | Cox, John L. | Midland, TX 79702 | Oil & Gas Operator | Mar 2015 |
| 6767 | Cox, Lee Investments Inc. | Mineral Wells, TX 76067 | Oil & Gas Operator | May 2025 |
| 6768 | Cox, Martin Regan | Irving, TX 75014 | Oil & Gas Operator | May 2025 |
| 6769 | Cox, Rex Allen | | Oil & Gas Operator | Dec 2021 |
| 6770 | Cox, Robert G. & Associates,Inc. | Dallas, TX 75225 | Oil & Gas Operator | Feb 1994 |
| 6771 | Cox, Wayne D. | Eureka, KS 67045 | Oil Operator | Sep 1991 |
| 6772 | Coy W. Hale | | Oil Operator | Nov 2024 |
| 6773 | Coyote Oil Company | Lufkin, TX 75915 | Oil & Gas Operator | Sep 1996 |
| 6774 | Coyote Oil Company. LTD. | | Oil & Gas Operator | Dec 1997 |
| 6775 | Coyote Oil LLC | | Oil Operator | Jan 2018 |
| 6776 | Coyote Oil, Inc. | Snyder, TX 79550 | Oil & Gas Operator | May 2025 |
| 6777 | Coyote Services, Inc. | Coleman, TX 76834 | Oil & Gas Operator | Mar 2002 |
| 6778 | Cozart Producers | | Oil Operator | Dec 2024 |
| 6779 | CP Exploration III Operating,LLC | Lafayette, LA 70505 | Oil & Gas Operator | Sep 2023 |
| 6780 | CP Exploration TX Operating LLC | Jacksboro, TX 76458 | Oil & Gas Operator | Apr 2017 |
| 6781 | CPBG, LLC | | Oil Operator | Oct 2019 |
| 6782 | Cpi 5, L.L.C | | Oil Operator | Dec 2023 |
| 6783 | Cpi Operating Co. | | Oil & Gas Operator | Mar 2003 |
| 6784 | Cpi Operating Company, LLC | | Oil Operator | Jan 2025 |
| 6785 | Cpmak Investments, Inc. | Cross Plains, TX 76443 | Oil Operator | May 2025 |
| 6786 | CPRC Inc | Tulsa, OK 74103-5037 | Oil & Gas Operator | Apr 1997 |
| 6787 | CPRP Services LLC | Oklahoma City, OK 73102-5804 | Oil & Gas Operator | Feb 2025 |
| 6788 | CPX Energy Operating, LLC | Dallas, TX 75225 | Oil & Gas Operator | May 2025 |
| 6789 | CPX Piceance Holdings LLC | | Oil & Gas Operator | Jul 2024 |
| 6790 | CR Energy | | Oil & Gas Operator | Dec 1992 |
| 6791 | CR Reed Production, Inc. | Gainesville, TX 76241 | Oil Operator | May 2025 |
| 6792 | CR2 Energy LLC | Houston, TX 77002 | Oil & Gas Operator | May 2025 |
| 6793 | CR3 Operating Company, L.L.C. | Houston, TX 77251 | Oil & Gas Operator | May 2025 |
| 6794 | Cra International, LTD | | Oil & Gas Operator | Mar 1983 |
| 6795 | Crab Run Gas Company | | Oil & Gas Operator | Feb 1982 |
| 6796 | Crabtree And Brown, Inc. | Kermit, TX 79745 | Oil & Gas Operator | Feb 1995 |
| 6797 | Crabtree Barbara T | Forney, TX 75126-5818 | Oil & Gas Operator | Oct 2024 |
| 6798 | Cracker Oil & Gas Co | | Gas Operator | Dec 2013 |
| 6799 | Craddock, Roy H Dba Craddock Oil & Gas | Chapmanville, WV 25508 | Gas Operator | Dec 2021 |
| 6800 | Craft & Craft Oil Company | Monahans, TX 79756 | Oil Operator | Dec 2024 |