| 1 | C & L Oil And Gas Corporation | Norman, OK 73069-8224 | Oil & Gas Operator | Feb 2024 |
| 2 | C & T Energy LLC | Morris, OK 74445-2667 | Oil & Gas Operator | Jan 2024 |
| 3 | Cane Creek Energy Partners Inc | Morris, OK 74445-2674 | Oil & Gas Operator | Jan 2024 |
| 4 | Canok International Inc | Beggs, OK 74421-0038 | Oil & Gas Operator | Jan 2024 |
| 5 | Capstone Oilfield Disposal Service LLC | Hennessey, OK 73742-0698 | Oil Operator | Dec 2019 |
| 6 | Casselman Charles Jack | Okmulgee, OK 74447-4265 | Oil & Gas Operator | Apr 2020 |
| 7 | Casselman Leases LLC | Morris, OK 74445-2509 | Oil & Gas Operator | Dec 2023 |
| 8 | Casselman Ronald H | Morris, OK 74445-0341 | Oil & Gas Operator | Jan 2024 |
| 9 | Central Ok Reclamation LLC | | Oil & Gas Operator | Jun 2014 |
| 10 | Centrex Operating Company | Tulsa, OK 74105 | Oil & Gas Operator | Jan 2024 |
| 11 | Chen K Wendell | Arlington, TX 76016-2555 | Oil & Gas Operator | Mar 2015 |
| 12 | Chenhall Billy J | Haskell, OK 74436-8733 | Oil & Gas Operator | Sep 2015 |
| 13 | Chevron USA Inc | Midland, TX 79706 | Oil & Gas Operator | May 2024 |
| 14 | Claborn Julia | Okmulgee, OK 74447-9781 | Oil & Gas Operator | Mar 2022 |
| 15 | Clark Operating Services, Inc. | Okmulgee, OK 74447 | Oil & Gas Operator | May 2013 |
| 16 | Cline Oil And Gas Company | Santa Fe, NM 87501 | Oil & Gas Operator | Sep 1994 |
| 17 | ConocoPhillips Company | Midland, TX 79701 | Oil & Gas Operator | May 2024 |
| 18 | Continental Resources, Inc. | Oklahoma City, OK 73126 | Oil & Gas Operator | May 2024 |
| 19 | Convest Energy Corporation | Houston, TX 77057 | Oil & Gas Operator | Sep 2014 |
| 20 | Cornelius Oil Company | Kellyville, OK 74039-0459 | Oil & Gas Operator | Jul 2015 |
| 21 | Cornelius Oil Inc | Kellyville, OK 74039-0459 | Oil & Gas Operator | Jan 2024 |
| 22 | Cowles James C | | Oil Operator | Dec 2023 |
| 23 | Creek Ellis | Haskell, OK 74436 | Oil & Gas Operator | Mar 2012 |
| 24 | Crown Central Pet Corp | Bellaire, TX 77401 | Oil & Gas Operator | Dec 2016 |
| 25 | Crown Energy Company | Oklahoma City, OK 73106 | Oil & Gas Operator | Jan 2024 |
| 26 | Crude Marketing & Trans Inc | Tulsa, OK 74159 | Oil & Gas Operator | Sep 2017 |