| 1 | C & C Tank Truck Service Inc | Holdenville, OK 74848-0150 | Oil Operator | Feb 2012 |
| 2 | C & J Trucks LLC | Seminole, OK 74868-5406 | Oil & Gas Operator | Mar 2024 |
| 3 | C & L Oil And Gas Corporation | Norman, OK 73069-8224 | Oil & Gas Operator | Feb 2024 |
| 4 | C & W Oil Inc | | Oil & Gas Operator | Aug 2016 |
| 5 | C H E Company Inc | Shawnee, OK 74801 | Oil Operator | Feb 2012 |
| 6 | C.D. Operating Company, Inc. | Oklahoma City, OK 73116 | Oil & Gas Operator | Apr 2015 |
| 7 | Calvert Exploration Co | | Oil & Gas Operator | Apr 1993 |
| 8 | Campbell Don G | Konawa, OK 74849 | Oil Operator | Feb 1997 |
| 9 | Cantrell Energy Corporation | Ada, OK 74820-0835 | Oil & Gas Operator | Jan 2024 |
| 10 | Cantrell Robert R | Ada, OK 74821-1433 | Oil & Gas Operator | Jan 2024 |
| 11 | Canvas Energy LLC | Oklahoma City, OK 73142-1839 | Oil & Gas Operator | Mar 2024 |
| 12 | Cap Oil Company | Ada, OK 74820-4101 | Oil Operator | Jan 2024 |
| 13 | Capstone Oilfield Disposal Service LLC | Hennessey, OK 73742-0698 | Oil Operator | Dec 2019 |
| 14 | Carbon Ridge Energy LLC | | Oil & Gas Operator | Feb 2024 |
| 15 | Carmac Energy Company LLC | | Oil Operator | Dec 2023 |
| 16 | Carmac Energy Corporation | Dallas, TX 75219-2311 | Oil & Gas Operator | Jan 2024 |
| 17 | Carmichael Oil & Gas Company | Vallejo, CA 94591-5653 | Oil & Gas Operator | Apr 2014 |
| 18 | Carney Mark C & Karen M | Dallas, TX 75206-4010 | Oil & Gas Operator | Oct 1994 |
| 19 | Carruth David C Family Trust | Russellville, AR 72811-2061 | Oil Operator | Aug 2002 |
| 20 | Cartledge & Cartledge Oil Company Inc | Kiefer, OK 74041-0040 | Oil & Gas Operator | Feb 2024 |
| 21 | Carver Harry | Oklahoma City, OK 73120 | Oil & Gas Operator | Nov 2000 |
| 22 | Castelli Exploration, Inc. | Oklahoma City, OK 73162 | Oil & Gas Operator | Jan 2024 |
| 23 | CDS Oil Company | Tulsa, OK 74147-1514 | Oil & Gas Operator | Mar 2015 |
| 24 | Cenpat Operating LLC | Houston, TX 77042-3044 | Oil & Gas Operator | Jan 2024 |
| 25 | Central Ok Reclamation LLC | | Oil & Gas Operator | Jun 2014 |
| 26 | Centrex Operating Company | Tulsa, OK 74105 | Oil & Gas Operator | Jan 2024 |
| 27 | CG Oil Co. | San Antonio, TX 78232 | Oil & Gas Operator | Mar 2011 |
| 28 | Charter Oak Production Co LLC | Oklahoma City, OK 73134 | Oil & Gas Operator | Apr 2024 |
| 29 | Cher Oil Company LTD | Ripley, OK 74062-6227 | Oil & Gas Operator | Jan 2024 |
| 30 | Chermac Energy Corporation | Edmond, OK 73083-5446 | Oil & Gas Operator | Apr 2020 |
| 31 | Cherokee Operating Company | Tulsa, OK 74103 | Oil & Gas Operator | Mar 2015 |
| 32 | Cherokee Royalties & Minerals Inc | Duncan, OK 73534-0415 | Oil & Gas Operator | Jan 2024 |
| 33 | Chesapeake Operating, LLC | Oklahoma City, OK 73154 | Oil & Gas Operator | Apr 2024 |
| 34 | Chevron USA Inc | Midland, TX 79706 | Oil & Gas Operator | Apr 2024 |
| 35 | Chinn, Velma D | | Oil Operator | Mar 2015 |
| 36 | Circle 9 Resources LLC | | Oil & Gas Operator | Jan 2024 |
| 37 | Citadel Production Company, Inc. | Denver, CO 80201 | Oil Operator | Sep 1996 |
| 38 | Clark Krista | Ada, OK 74820-8595 | Oil Operator | Sep 2001 |
| 39 | Claybrook Drilling Co Inc | | Oil & Gas Operator | Sep 2014 |
| 40 | Claybrook Production Co. Inc. | Wewoka, OK 74884-1380 | Oil & Gas Operator | Jun 2014 |
| 41 | Cleary Jo Anne | Saint Louis, OK 74866-0073 | Oil Operator | Dec 2023 |
| 42 | Cleere Operating LLC | | Oil Operator | Jan 2024 |
| 43 | Clifton & Associates Inc | Tulsa, OK 74133 | Oil & Gas Operator | May 2020 |
| 44 | Cloer VIrgil R | Oklahoma City, OK 73121 | Oil & Gas Operator | Apr 1993 |
| 45 | CM Exploration Company Inc. | | Oil & Gas Operator | Apr 2009 |
| 46 | CMT Oil & Gas Company Inc | Tulsa, OK 74133-6754 | Oil & Gas Operator | Jan 2024 |
| 47 | Coastal Oils Inc | Oklahoma City, OK 73102 | Oil & Gas Operator | Jan 2013 |
| 48 | Colpitt Brothers Oil | Collinsville, OK 74021-0028 | Oil & Gas Operator | Apr 2020 |
| 49 | Columbus Oil Company | Seminole, OK 74818-1111 | Oil & Gas Operator | Feb 2024 |
| 50 | Concho Exploration Inc | Oklahoma City, OK 73154 | Oil & Gas Operator | Mar 2015 |
| 51 | Confederate Spooling Inc | Okemah, OK 74859-2409 | Oil & Gas Operator | Apr 2020 |
| 52 | Conner Jelly | Seminole, OK 74868 | Oil & Gas Operator | Mar 1996 |
| 53 | Conner Production Co LLC | Seminole, OK 74818-0349 | Oil & Gas Operator | Jan 2024 |
| 54 | Conoco Inc. | Houston, TX 77252 | Oil & Gas Operator | Mar 2015 |
| 55 | ConocoPhillips Company | Midland, TX 79701 | Oil & Gas Operator | Apr 2024 |
| 56 | Consolidated Investments | Seminole, OK 74818-0651 | Oil & Gas Operator | Jan 2024 |
| 57 | Consolidated Oil & Gas Inc | Wichita, KS 67202 | Oil & Gas Operator | Dec 2012 |
| 58 | Consolidated Properties | Tulsa, OK 74129 | Oil & Gas Operator | Jan 2017 |
| 59 | Continental Resources, Inc. | Oklahoma City, OK 73126 | Oil & Gas Operator | Apr 2024 |
| 60 | Convest Energy Corporation | Houston, TX 77057 | Oil & Gas Operator | Sep 2014 |
| 61 | Cook Oil Company | Wewoka, OK 74884-0875 | Oil & Gas Operator | Sep 2015 |
| 62 | Cook William Glenn | Wewoka, OK 74884-0727 | Oil & Gas Operator | Nov 2000 |
| 63 | Cooper John T | Duncan, OK 73534 | Oil & Gas Operator | Sep 2014 |
| 64 | Cooper Oil Inc | Duncan, OK 73534 | Oil & Gas Operator | Sep 2014 |
| 65 | Cornelius Petroleum Inc | Kellyville, OK 74039 | Oil & Gas Operator | Jan 2024 |
| 66 | Cougar Energy Investment LLC | Spring, TX 77387-7277 | Oil & Gas Operator | Sep 2014 |
| 67 | CPRP Services LLC | | Oil & Gas Operator | Feb 2024 |
| 68 | Criswell Energy LLC | Montezuma, IA 50171-8500 | Oil & Gas Operator | Oct 2022 |
| 69 | Cross, Don E | | Oil & Gas Operator | Jan 2013 |
| 70 | Crown Energy Company | Oklahoma City, OK 73106 | Oil & Gas Operator | Jan 2024 |
| 71 | Crude Marketing & Trans Inc | Tulsa, OK 74159 | Oil & Gas Operator | Sep 2017 |
| 72 | Crystal Energy Inc | Oklahoma City, OK 73116 | Oil & Gas Operator | Feb 2019 |
| 73 | Cuesta Petroleum Inc | Shawnee, OK 74801-6963 | Oil & Gas Operator | Jan 2024 |
| 74 | Cumberland Operating Company | Seminole, OK 74868-1258 | Oil & Gas Operator | Mar 2007 |
| 75 | Cummins Wren Oil Company | Tulsa, OK 74135 | Oil & Gas Operator | Nov 1998 |
| 76 | CWB Energy Inc | Oklahoma City, OK 73139-8837 | Oil Operator | May 2000 |