| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | CMS Oil And Gas Company | Jackson, MI 49201 | Oil & Gas Operator | Oct 2002 |
| 2 | Encana Oil & Gas (USA) Inc. | Denver, CO 80202 | Oil & Gas Operator | Oct 2020 |
| 3 | Federated Natural Resources Corp | Oil & Gas Operator | Oct 1989 | |
| 4 | Lambda Energy Resources LLC | Oil & Gas Operator | Oct 2024 | |
| 5 | Marathon Oil Company | Houston, TX 77024 | Oil & Gas Operator | Oct 2024 |
| 6 | Merit Energy Company | Dallas, TX 75240 | Oil & Gas Operator | Dec 2024 |
| 7 | Northstar Energy LLC | Gas Operator | Sep 2020 | |
| 8 | O I L Energy Corp | Oil & Gas Operator | Oct 2017 | |
| 9 | O I L Niagaran LLC | Oil & Gas Operator | May 2017 | |
| 10 | Presidium Energy LC | Oil & Gas Operator | Jul 2016 | |
| 11 | Savoy Energy LP | Traverse City, MI 49685-1560-1560 | Oil & Gas Operator | May 2024 |
| 12 | Swepi LP | Houston, TX 77079 | Oil & Gas Operator | Jul 2020 |
| 13 | Terra Energy LTD | Oil & Gas Operator | Apr 2018 |