| 4901 | Carr Exploration | | Oil & Gas Operator | Sep 1993 |
| 4902 | Carr Exploration Corp. | Dallas, TX 75225 | Oil & Gas Operator | Aug 2003 |
| 4903 | Carr Petroleum, Inc. | | Oil Operator | Apr 1987 |
| 4904 | Carr Resources, Inc. | Tyler, TX 75702 | Oil & Gas Operator | Nov 2024 |
| 4905 | Carr Well Service Inc | Midland, TX 79702 | Oil & Gas Operator | Nov 1996 |
| 4906 | Carr, Robert Alan | | Gas Operator | Dec 2021 |
| 4907 | Carraway Co. | | Oil Operator | Apr 2006 |
| 4908 | Carrell Oil Company Dba Coco | Laurel, MT 59044 | Oil Operator | Jul 2020 |
| 4909 | Carrera Energy LLC | Midland, TX 79704-5036 | Oil & Gas Operator | Jul 2024 |
| 4910 | Carrie Exploration & Development, LLC | Hays, KS 67601 | Oil & Gas Operator | Jul 2024 |
| 4911 | Carriero, John H. & Pamela A. | Angola, NY 14006 | Gas Operator | Dec 2023 |
| 4912 | Carrizo (Eagle Ford) LLC | Houston, TX 77042 | Oil & Gas Operator | Jan 2020 |
| 4913 | Carrizo (Marcellus) LLC | Houston, TX 77002-5018 | Gas Operator | Jun 2019 |
| 4914 | Carrizo (Permian) LLC | Houston, TX 77042 | Oil & Gas Operator | Jan 2020 |
| 4915 | Carrizo (Utica) LLC | Houston, TX 77002 | Oil & Gas Operator | Dec 2017 |
| 4916 | Carrizo Exploration, Inc. | Carrizo SPGS, TX 78834 | Oil & Gas Operator | Aug 2016 |
| 4917 | Carrizo Niobrara LLC | | Oil & Gas Operator | Aug 2017 |
| 4918 | Carrizo Oil & Gas, Inc. | Houston, TX 77002 | Oil & Gas Operator | Nov 2024 |
| 4919 | Carrland Oil & Gas Inc. | Prosper, TX 75078 | Oil & Gas Operator | Nov 2024 |
| 4920 | Carroll Energy, LLC | Bartlesville, OK 74006 | Oil & Gas Operator | Nov 2023 |
| 4921 | Carroll M R Dba Carroll Production Company | Sapulpa, OK 74066-6132 | Oil & Gas Operator | Sep 2024 |
| 4922 | Carroll Oil Prod | | Oil Operator | Jan 1986 |
| 4923 | Carroll Operating, LLC | Abilene, TX 79608 | Oil & Gas Operator | Feb 2022 |
| 4924 | Carroll Resources | Loudonville, OH 44842 | Oil & Gas Operator | Dec 1998 |
| 4925 | Carroll T L Ente | | Gas Operator | Aug 1989 |
| 4926 | Carroll, Alvis J. | Wichita Falls, TX 76302 | Oil & Gas Operator | Mar 2008 |
| 4927 | Carroll, Jon M. | Great Bend, KS 67530 | Oil Operator | Dec 2001 |
| 4928 | Carrollton Resources Corp. | | Oil & Gas Operator | Sep 2000 |
| 4929 | Carruth David C Family Trust | Russellville, AR 72811-2061 | Oil Operator | Aug 2002 |
| 4930 | Carruth Oil & Gas, LLC | Andrews, TX 79714 | Oil & Gas Operator | Nov 2024 |
| 4931 | Carruth, Chris | Andrews, TX 79714 | Oil & Gas Operator | Nov 2017 |
| 4932 | Carson Buckles Exploration LLC | Midland, TX 79710 | Oil & Gas Operator | Nov 2024 |
| 4933 | Carson Dominguez Real Est Corp | | Oil & Gas Operator | Dec 1996 |
| 4934 | Carstan Petroleu | | Oil Operator | May 1983 |
| 4935 | Carter & Rorex | | Oil Operator | Dec 1991 |
| 4936 | Carter Cattle & Crude Company | Luling, TX 78648 | Oil & Gas Operator | Nov 2024 |
| 4937 | Carter County Salt Water Disposal Inc | Wilson, OK 73463 | Oil Operator | Jul 2024 |
| 4938 | Carter Donald L | Sand Springs, OK 74063-8105 | Oil Operator | May 2006 |
| 4939 | Carter E W Oil Co Inc | Hominy, OK 74035 | Oil & Gas Operator | Sep 2024 |
| 4940 | Carter E&P, LLC | Johnson City, TX 78636 | Oil & Gas Operator | Dec 2016 |
| 4941 | Carter Energy Corporation | Duncanville, TX 75138 | Oil & Gas Operator | Sep 2010 |
| 4942 | Carter Exploration Company | Corpus Chrsti, TX 78413 | Oil & Gas Operator | Feb 2015 |
| 4943 | Carter Mammons | Pawhuska, OK 74056 | Oil Operator | Jan 2021 |
| 4944 | Carter Oil And Gas Inc | Richmond, VA 23219 | Oil & Gas Operator | Dec 2011 |
| 4945 | Carter Oil Co | | Oil & Gas Operator | Dec 2013 |
| 4946 | Carter Preston Drilling Co | Davis, OK 73030 | Gas Operator | Nov 2000 |
| 4947 | Carter Resources | Kilgore, TX 75663 | Oil & Gas Operator | Jan 2005 |
| 4948 | Carter, Calvin Gene | Sedan, KS 67361 | Oil Operator | Nov 2018 |
| 4949 | Carter, Eugene J. | Longton, KS 67352 | Oil Operator | Jan 1998 |
| 4950 | Carter, Gertrude (Trudy) | Rockwall, TX 75032 | Oil & Gas Operator | Apr 2013 |
| 4951 | Carter, Mattye Family Trust | Fort Worth, TX 76109 | Oil & Gas Operator | Oct 2002 |
| 4952 | Carter, Mattye L., Estate Of | Gladewater, TX 75647 | Oil & Gas Operator | Feb 1995 |
| 4953 | Carter, Shirley Oil Co | Round Rock, TX 78665 | Oil & Gas Operator | Jun 2018 |
| 4954 | Carter-Langham, Inc. | Dallas, TX 75205 | Oil & Gas Operator | Nov 2024 |
| 4955 | Carter-Waters Corp. | | Oil Operator | Dec 1988 |
| 4956 | Cartex Production | Pampa, TX 79066 | Oil & Gas Operator | Nov 2024 |
| 4957 | Cartex Production Corp. | Pampa, TX 79066 | Oil & Gas Operator | Nov 2000 |
| 4958 | Cartledge & Cartledge Oil Company Inc | Kiefer, OK 74041 | Oil & Gas Operator | Sep 2024 |
| 4959 | Cartledge Energy LLC | Sapulpa, OK 74066-6623 | Oil & Gas Operator | Sep 2024 |
| 4960 | Caruthers Operating Co., Inc. | | Oil & Gas Operator | Jul 2010 |
| 4961 | Caruthers Producing Co., Inc. | Kilgore, TX 75663 | Oil & Gas Operator | Feb 2019 |
| 4962 | Carver Harry | Oklahoma City, OK 73120 | Oil & Gas Operator | Nov 2000 |
| 4963 | Cary Oil & Gas, Inc | Decatur, TX 76234 | Oil & Gas Operator | Nov 2024 |
| 4964 | Casa Grande Exploration Company | Casa Grande, AZ 85194 | Oil & Gas Operator | Sep 2024 |
| 4965 | Casa Operations | Borger, TX 79007 | Oil & Gas Operator | Nov 2024 |
| 4966 | Cascade Oil (Dba) | Ness City, KS 67560 | Oil Operator | Mar 1998 |
| 4967 | Cascade Oil And Gas, Inc | | Oil & Gas Operator | Jun 2005 |
| 4968 | Cascade Oil Comp | | Oil & Gas Operator | Dec 1994 |
| 4969 | Cascade Petroleum Corporation | Quitman, TX 75783 | Oil & Gas Operator | Mar 2002 |
| 4970 | Cascade Petroleum Inc | North Canton, OH 44720-4244-4244 | Oil & Gas Operator | Dec 1992 |
| 4971 | Cascade Petroleum LLC | | Oil & Gas Operator | Nov 2015 |
| 4972 | Cascade Resources LLC | Edmond, OK 73083 | Oil & Gas Operator | Sep 2024 |
| 4973 | Case Brothers Inc. | Limestone, NY 14753 | Oil & Gas Operator | Dec 2023 |
| 4974 | Case Drilling Company | Philpot, KY 42366 | Oil Operator | Dec 2019 |
| 4975 | Case Oil | Burkburnett, TX 76354 | Oil & Gas Operator | Nov 2024 |
| 4976 | Case Oil & Gas I | | Oil & Gas Operator | Apr 1992 |
| 4977 | Case Resources, LLC | Graham, TX 76450 | Oil & Gas Operator | Nov 2024 |
| 4978 | Case Sales Company Inc | Tonkawa, OK 74653-0040 | Oil & Gas Operator | Aug 2024 |
| 4979 | Case'S Used Equipment | | Oil & Gas Operator | Sep 2024 |
| 4980 | Case, C. W. | Wichita Falls, TX 76308 | Oil & Gas Operator | Nov 2024 |
| 4981 | Casebeer, Inc. | McPherson, KS 67460 | Oil Operator | Jul 2024 |
| 4982 | Casella Charles J | Avonmore, PA 15618-1028 | Oil & Gas Operator | Dec 2015 |
| 4983 | Casex Company | | Oil & Gas Operator | Dec 2007 |
| 4984 | Casey David | Hennepin, OK 73046 | Oil Operator | Sep 2024 |
| 4985 | Casey Musgrove Oil Company Inc | Ponca City, OK 74602 | Oil & Gas Operator | Sep 2024 |
| 4986 | Casey, W. J. | Fairfield, TX 75840 | Oil & Gas Operator | Nov 2024 |
| 4987 | Cash Flow Oil | | Oil Operator | Jul 2003 |
| 4988 | Cashco Energy Corporation | | Oil & Gas Operator | Feb 1982 |
| 4989 | Cashco Oil Company | Houston, TX 77024 | Oil & Gas Operator | Aug 2003 |
| 4990 | Cashco, L.L.C. | Houston, TX 77024 | Oil & Gas Operator | Jul 1999 |
| 4991 | Cashion, Lyle, Company | Brandon, MS 39047 | Oil & Gas Operator | May 2008 |
| 4992 | Casias Oil Well Service, Inc. | San Antonio, TX 78232 | Oil & Gas Operator | Jul 2020 |
| 4993 | Casillas Operating LLC | Tulsa, OK 74103-4060 | Oil & Gas Operator | Sep 2024 |
| 4994 | Casillas Petroleum Corp | Satanta, KS 67870 | Oil & Gas Operator | Sep 2024 |
| 4995 | Casino Petroleum | | Oil Operator | Dec 1996 |
| 4996 | Caskids Operating Company | Houston, TX 77027 | Oil & Gas Operator | Nov 2024 |
| 4997 | Cason William J | Santee, CA 92071-2765 | Oil Operator | Sep 2019 |
| 4998 | Caspen Oil, Inc. | Denver, CO 80226 | Oil & Gas Operator | Jul 1993 |
| 4999 | Caspen Operating Company | Somerset, TX 78069 | Oil & Gas Operator | Mar 2008 |
| 5000 | Casper Oil & Gas | Bandera, TX 78003 | Oil & Gas Operator | Oct 2002 |