| 1 | C & L Oil And Gas Corporation | Norman, OK 73069-8224 | Oil & Gas Operator | Feb 2024 |
| 2 | Canaan Energy Corporation | Oklahoma City, OK 73154-8806 | Oil & Gas Operator | Mar 2015 |
| 3 | Canok International Inc | Beggs, OK 74421-0038 | Oil & Gas Operator | Jan 2024 |
| 4 | Canvas Energy LLC | Oklahoma City, OK 73142-1839 | Oil & Gas Operator | Mar 2024 |
| 5 | Canyon Creek Resources LLC | Tulsa, OK 74136 | Oil & Gas Operator | Apr 2024 |
| 6 | Capstone Oilfield Disposal Service LLC | Hennessey, OK 73742-0698 | Oil Operator | Dec 2019 |
| 7 | Carbon Economy LLC | Chickasha, OK 73023 | Oil & Gas Operator | Feb 2024 |
| 8 | Cates Betty J | Tulsa, OK 74112 | Oil & Gas Operator | Nov 2016 |
| 9 | Central Ok Reclamation LLC | | Oil & Gas Operator | Jun 2014 |
| 10 | Chaco Energy Company | Denver, CO 80201 | Oil & Gas Operator | Feb 2024 |
| 11 | Champlin Exploration, Inc. | Enid, OK 73702 | Oil & Gas Operator | Feb 2024 |
| 12 | Charter Oak Production Co LLC | Oklahoma City, OK 73134 | Oil & Gas Operator | Apr 2024 |
| 13 | Chesapeake Energy MKT Inc | Oklahoma City, OK 73154 | Oil & Gas Operator | May 2022 |
| 14 | Chesapeake Exploration LLC | Oklahoma City, OK 731540496 | Oil & Gas Operator | Jul 2020 |
| 15 | Chesapeake Operating, LLC | Oklahoma City, OK 73154 | Oil & Gas Operator | Apr 2024 |
| 16 | Chevron USA Inc | Midland, TX 79706 | Oil & Gas Operator | Apr 2024 |
| 17 | Cheyenne Petroleum Company | Oklahoma City, OK 73134 | Oil & Gas Operator | Apr 2024 |
| 18 | Christeve Oil Company, Inc. | Houston, TX 77068 | Oil & Gas Operator | Dec 2022 |
| 19 | Cimarex Energy Co | Midland, TX 79706 | Oil & Gas Operator | Apr 2024 |
| 20 | Cimarex Energy Co. Of Colorado | Midland, TX 79706 | Oil & Gas Operator | Apr 2024 |
| 21 | Cimarron Operating Company | Oklahoma City, OK 73112-3967 | Oil & Gas Operator | May 2011 |
| 22 | Colt Resources Corporation | Billings, MT 59103 | Oil & Gas Operator | Feb 2013 |
| 23 | Concho Exploration Inc | Oklahoma City, OK 73154 | Oil & Gas Operator | Mar 2015 |
| 24 | Conoco Inc. | Houston, TX 77252 | Oil & Gas Operator | Mar 2015 |
| 25 | ConocoPhillips Company | Midland, TX 79701 | Oil & Gas Operator | Apr 2024 |
| 26 | Continental Operating Co. | Houston, TX 77024 | Oil & Gas Operator | Apr 2024 |
| 27 | Continental Resources, Inc. | Oklahoma City, OK 73126 | Oil & Gas Operator | Apr 2024 |
| 28 | Continuum Midstream LLC | Tulsa, OK 74136 | Oil & Gas Operator | Sep 2023 |
| 29 | Convest Energy Corporation | Houston, TX 77057 | Oil & Gas Operator | Sep 2014 |
| 30 | Cordillera Energy Partners III LLC | Greenwood VIllage, CO 80111-2856 | Oil & Gas Operator | Mar 2014 |
| 31 | Cordillera Energy Partners LLC | Greenwood VLG, CO 80111 | Oil & Gas Operator | Mar 2020 |
| 32 | Crawley Petroleum Corporation | Oklahoma City, OK 73102 | Oil & Gas Operator | Apr 2024 |
| 33 | Crescendo Resources L P | Amarillo, TX 79188 | Oil & Gas Operator | Jan 2024 |
| 34 | Crest Resources Inc | Tulsa, OK 74103 | Oil & Gas Operator | Apr 2024 |
| 35 | Cross Timbers Operating Co | Fort Worth, TX 76102 | Oil & Gas Operator | Dec 2023 |
| 36 | Cross Timbers Production Co | Oklahoma City, OK 73102-5605 | Oil & Gas Operator | Mar 2005 |
| 37 | Crouch Petroleum Company | Amarillo, TX 79110 | Oil & Gas Operator | Mar 2015 |
| 38 | Crow Oil LLC | Tulsa, OK 74133-2914 | Oil & Gas Operator | Sep 2019 |