| 1 | Belden And Blake Corp Dba Ward Lake Energy | | Oil & Gas Operator | Jul 2020 |
| 2 | BP America Production Company | Denver, CO 80202 | Oil & Gas Operator | Oct 2024 |
| 3 | Breitburn Operating Limited Partnership | | Oil & Gas Operator | Aug 2022 |
| 4 | D T E Gas And Oil Co | | Gas Operator | May 2007 |
| 5 | Dominion Midwest Energy Inc | | Oil & Gas Operator | Dec 2007 |
| 6 | Don Yohe Enterprises Inc. | Armada, MI 48005 | Oil & Gas Operator | Apr 2018 |
| 7 | Fruehauf Antrim LP | | Gas Operator | Jan 2005 |
| 8 | Highmount Midwest Energy LLC | | Oil & Gas Operator | Sep 2011 |
| 9 | Jordan Development Company LLC | Traverse City, MI 49686 | Oil & Gas Operator | Sep 2024 |
| 10 | Lambda Energy Resources LLC | | Oil & Gas Operator | Oct 2024 |
| 11 | Lees Petroleum LLC | | Oil & Gas Operator | Jul 2000 |
| 12 | Mercury Exploration Co | Fort Worth, TX 76104 | Oil & Gas Operator | Dec 2006 |
| 13 | Merit Energy Company | Dallas, TX 75240 | Oil & Gas Operator | Dec 2024 |
| 14 | Nu Energy Operating Inc | | Oil & Gas Operator | May 2024 |
| 15 | O I L Energy Corp | | Oil & Gas Operator | Oct 2017 |
| 16 | Omega Operating, Inc. | Odessa, TX 79769 | Oil & Gas Operator | Mar 2001 |
| 17 | Paxton Resources LLC | | Oil & Gas Operator | Sep 2024 |
| 18 | Quicksilver Resources Inc | Fort Worth, TX 76102 | Oil & Gas Operator | Mar 2018 |
| 19 | Riverside Energy Michigan LLC | | Oil & Gas Operator | Sep 2024 |
| 20 | Riviera Operating, LLC | Houston, TX 77002 | Oil & Gas Operator | Oct 2024 |
| 21 | S R W Inc | | Gas Operator | Aug 2017 |
| 22 | Swepi LP | Houston, TX 77079 | Oil & Gas Operator | Jul 2020 |
| 23 | Terra Energy Co LLC | | Oil & Gas Operator | Apr 2018 |
| 24 | Terra Energy LTD | | Oil & Gas Operator | Apr 2018 |
| 25 | Trendwell Energy Corporation | | Oil & Gas Operator | Aug 2024 |
| 26 | V C P Michigan, LLC | | Oil & Gas Operator | Oct 2024 |
| 27 | Whiting Oil And Gas Corporation | Houston, TX 77002 | Oil & Gas Operator | Dec 2024 |
| 28 | Wolverine Environmental Production Inc | | Oil & Gas Operator | Sep 2000 |