| 5801 | Clavo Oil, LLC | Graham, TX 76450 | Oil & Gas Operator | Nov 2024 |
| 5802 | Clawson, Merle Eugene | McCune, KS 66753 | Oil Operator | Nov 2016 |
| 5803 | Clay Exploration, Inc. | Spring, TX 77387 | Oil & Gas Operator | Jun 2019 |
| 5804 | Clay Investments LLC | Stillwater, OK 74075-3600 | Oil & Gas Operator | Jan 2021 |
| 5805 | Clay Oil & Gas Co | Zanesville, OH 43701 | Oil Operator | Dec 1991 |
| 5806 | Clay Petroleum | Prosper, TX 75078 | Oil & Gas Operator | Feb 2023 |
| 5807 | Clay, Charles E. | Jacksboro, TX 76458 | Oil & Gas Operator | Sep 2010 |
| 5808 | Clay, Jerry H. | Tyler, TX 75702 | Oil & Gas Operator | Mar 2006 |
| 5809 | Claybanks Oil Co LLC | | Oil Operator | Jun 2019 |
| 5810 | Claybrook Drilling Co Inc | | Oil & Gas Operator | Sep 2014 |
| 5811 | Claybrook Production Co. Inc. | Wewoka, OK 74884-1380 | Oil & Gas Operator | Jun 2014 |
| 5812 | Clayton Corp Petro & Natural Gas Prod | Lakewood, CO 80228-1836 | Oil & Gas Operator | Oct 2020 |
| 5813 | Clayton Corp Petro & NTRL Gas Prodn | Lakewood, CO 80228 | Oil & Gas Operator | Dec 2009 |
| 5814 | Clayton Corporation | Golden, CO 80401 | Oil & Gas Operator | Dec 2019 |
| 5815 | Clayton Investment | Farmington, NM 87401 | Oil & Gas Operator | Jun 1995 |
| 5816 | Clayton Petroleum Corporation | Midland, TX 79702 | Oil & Gas Operator | May 2004 |
| 5817 | Clayton W. Williams, Jr. | | Oil & Gas Operator | Sep 1986 |
| 5818 | Clayton W. Williams, Jr., Inc. | | Oil & Gas Operator | May 1993 |
| 5819 | Clayton Williams Energy, Inc. | Houston, TX 77070 | Oil & Gas Operator | Apr 2017 |
| 5820 | CLC Operations Inc | Midland, TX 79701 | Oil & Gas Operator | Mar 1997 |
| 5821 | Clean Energy Exploration & Production LLC | Norristown, PA 19403 | Gas Operator | Sep 2024 |
| 5822 | Clean Energy Systems Placerita Inc. | | Oil & Gas Operator | Aug 2024 |
| 5823 | Clean Gas, Inc | Hindman, KY 41822 | Oil & Gas Operator | Dec 2021 |
| 5824 | Cleantex Oilfield Services, LLC | Tyler, TX 75702 | Oil Operator | Nov 2024 |
| 5825 | Clear Brooke Ranches, LLC | Fort Worth, TX 76179 | Oil & Gas Operator | Nov 2024 |
| 5826 | Clear Creek Energy LLC | | Oil & Gas Operator | Dec 2021 |
| 5827 | Clear Creek Exploration LLC | Fredonia, KS 66736 | Gas Operator | Apr 2011 |
| 5828 | Clear Creek Oil Co | Nova, OH 44859 | Oil & Gas Operator | Dec 2018 |
| 5829 | Clear Creek Royalty LLC | Tulsa, OK 74137 | Oil & Gas Operator | Jul 2023 |
| 5830 | Clear Fork Gas Company | Albany, TX 76430 | Oil & Gas Operator | Nov 2024 |
| 5831 | Clear Fork, Incorporated | Abilene, TX 79604 | Oil & Gas Operator | Nov 2024 |
| 5832 | Clear Lake Oil Co. | | Oil Operator | Jul 2024 |
| 5833 | Clear Water Inc. | Midland, TX 79710 | Oil & Gas Operator | Nov 2024 |
| 5834 | Clearfield Energy Resources & Management Inc. | | Oil & Gas Operator | Dec 1998 |
| 5835 | Clearfork Operating LLC | Fort Worth, TX 76102 | Oil & Gas Operator | Aug 2011 |
| 5836 | Clearfork Petroleum Inc. (A) | Lubbock, TX 79408 | Oil & Gas Operator | Nov 2024 |
| 5837 | Clearfork Production, LLC | Fort Worth, TX 76102 | Oil & Gas Operator | Nov 2018 |
| 5838 | Clearly Petroleum, LLC | Houston, TX 77086 | Oil & Gas Operator | Jun 2020 |
| 5839 | Cleary Exploration LLC | Oklahoma City, OK 73112-7221 | Oil & Gas Operator | Oct 2014 |
| 5840 | Cleary Jo Anne | Saint Louis, OK 74866 | Oil Operator | Sep 2024 |
| 5841 | Cleary Petroleum Corporation | Edmond, OK 73083 | Oil & Gas Operator | Jul 2019 |
| 5842 | Cleaver Loraine | | Oil Operator | Dec 1996 |
| 5843 | Cleaver, Loraine G. (Deceased) Estate | Iola, KS 66749 | Oil Operator | Nov 2009 |
| 5844 | Cleere Operating LLC | Shawnee, OK 74804-2610 | Oil Operator | Aug 2024 |
| 5845 | Clem Energy LLC | | Oil & Gas Operator | Dec 2021 |
| 5846 | Clements Energy, Inc. | | Oil & Gas Operator | Oct 1987 |
| 5847 | Clements Exploration Co | Oklahoma City, OK 73132-5922 | Oil & Gas Operator | Jan 2006 |
| 5848 | Clements Operating Company, Inc. | Luling, TX 78648 | Oil & Gas Operator | Aug 2003 |
| 5849 | Clements-B & MCK - Luffey | | Gas Operator | Apr 1979 |
| 5850 | Clemishire Bryan | Hominy, OK 74035 | Oil & Gas Operator | Nov 2014 |
| 5851 | Clemishire Don | Hominy, OK 74035 | Oil & Gas Operator | Sep 2024 |
| 5852 | Clemishire Mark | Hominy, OK 74035 | Oil Operator | Sep 2024 |
| 5853 | Clemishire, Jerry L | | Oil & Gas Operator | Sep 2024 |
| 5854 | Clemons, Tony W. | Minden, LA 71055 | Oil & Gas Operator | Dec 2016 |
| 5855 | Clemshire Bob | Hominy, OK 74035 | Oil & Gas Operator | Aug 2024 |
| 5856 | Clemshire Drilling Company | Tulsa, OK 74105 | Oil Operator | Aug 2024 |
| 5857 | Clendening, John A | | Oil Operator | Dec 2021 |
| 5858 | Cleo Oil, Inc. | Olney, TX 76374 | Oil & Gas Operator | May 1997 |
| 5859 | Cleveland Oil & Gas | Wichita Falls, TX 76308 | Oil Operator | Nov 2024 |
| 5860 | Cleveland Oil Company,L.L.C.,The | Midland, TX 79702 | Oil & Gas Operator | Sep 1999 |
| 5861 | Cleveland Production Company | Summit, MS 39666 | Oil & Gas Operator | Jul 1999 |
| 5862 | Cleveland Rod & Tracy | Elmore City, OK 73433-9467 | Oil & Gas Operator | Jul 2023 |
| 5863 | Click Betty | Stigler, OK 74462-0081 | Oil & Gas Operator | Feb 2016 |
| 5864 | Click Corp | Monroe, LA 71207 | Oil & Gas Operator | Jan 2004 |
| 5865 | Click Energy Company | Houston, TX 77269 | Oil & Gas Operator | Nov 2024 |
| 5866 | Click Robert R | Dallas, TX 75231 | Oil & Gas Operator | Nov 1995 |
| 5867 | Clide Oil Corp. | Iraan, TX 79744 | Oil & Gas Operator | Nov 2015 |
| 5868 | Clifford & Scott McKeever | Clarksburg, PA 15725 | Gas Operator | Dec 2023 |
| 5869 | Clifford C. Or Mary A. Terry | Dadeville, AL 36853 | Oil Operator | Feb 2003 |
| 5870 | Cliffs Drilling Company | | Oil & Gas Operator | Dec 1984 |
| 5871 | Cliffs Oil And Gas Company | | Oil & Gas Operator | Oct 1997 |
| 5872 | Cliffwood Production Co. | Houston, TX 77090 | Oil & Gas Operator | Aug 2013 |
| 5873 | Clift Cary E | Chickasha, OK 73018-6305 | Oil & Gas Operator | Mar 2024 |
| 5874 | Clifton & Associates Inc | Tulsa, OK 74133 | Oil & Gas Operator | May 2020 |
| 5875 | Clifton Consulting Inc | Piedmont, OK 73078-0180 | Gas Operator | Aug 2024 |
| 5876 | Clifton Oil | Muenster, TX 76252 | Oil & Gas Operator | Mar 2006 |
| 5877 | Clifton, B.W. | Graham, TX 76450 | Oil & Gas Operator | Mar 2000 |
| 5878 | Clifton, Joe B. Exploration, Inc | Pauls Valley, OK 73075 | Oil & Gas Operator | Mar 2008 |
| 5879 | Clinch Drilling Company | | Oil & Gas Operator | Jan 2000 |
| 5880 | Clindco Inc | Bartlesville, OK 74006-6213 | Oil & Gas Operator | Oct 2019 |
| 5881 | Cline Oil And Gas Company | Santa Fe, NM 87501 | Oil & Gas Operator | Sep 1994 |
| 5882 | Cline Oil Inc | Bradford, PA 16701 | Oil & Gas Operator | Dec 2023 |
| 5883 | Cline Production Company | Billings, MT 59104 | Oil & Gas Operator | Aug 2024 |
| 5884 | Clint H. Woodington | | Oil Operator | Dec 1994 |
| 5885 | Clinton Bowers Estate | Manhatten, KS 66502 | Oil Operator | Dec 1998 |
| 5886 | Clinton County Crude Inc | Albany, KY 42602 | Oil Operator | Dec 2022 |
| 5887 | Clinton Gas Marketing Inc | Columbus, OH 43214 | Oil & Gas Operator | Dec 1988 |
| 5888 | Clinton Oil Co | Wichita, KS 67202 | Oil & Gas Operator | Apr 1980 |
| 5889 | Clinton Petroleum Co Inc | Randolph, OH 44265 | Oil & Gas Operator | Dec 2009 |
| 5890 | Clinton Producti | | Oil Operator | Dec 1989 |
| 5891 | Clinton Production, Inc. | Wichita, KS 67206 | Oil & Gas Operator | Jul 2024 |
| 5892 | Clinton Public Works Authority | Clinton, OK 73601 | Oil & Gas Operator | May 2023 |
| 5893 | Clinton, Orville L., Jr. | Paola, KS 66071 | Oil Operator | Apr 2005 |
| 5894 | Clipper Operating Co., Inc. | San Antonio, TX 78209 | Oil & Gas Operator | Jan 2000 |
| 5895 | CLK Energy Partners, LLC | | Oil & Gas Operator | Aug 2018 |
| 5896 | CLM Oil Production Inc | Bartlesville, OK 74006-4417 | Oil & Gas Operator | Sep 2024 |
| 5897 | CLM Operating | Graham, TX 76450 | Oil & Gas Operator | Aug 2017 |
| 5898 | Cloer VIrgil R | Oklahoma City, OK 73121 | Oil & Gas Operator | Apr 1993 |
| 5899 | Clofas Case Oil Co. | | Oil & Gas Operator | Aug 2024 |
| 5900 | Close, Bryan H. | Shamrock, TX 79079 | Gas Operator | Nov 2024 |