| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | E M V Company | Oil Operator | Oct 2003 | |
| 2 | Eagle Operating Inc | Minot, ND 58701 | Oil & Gas Operator | Aug 2025 |
| 3 | Energy Search Company Inc | Aurora, CO 80011 | Oil & Gas Operator | Jun 2021 |
| 4 | Enerplus Resources USA Corporation | Denver, CO 80202 | Oil & Gas Operator | Aug 2025 |
| 5 | Enprop Inc | Oil & Gas Operator | Feb 2013 | |
| 6 | Exco Resources Inc | Dallas, TX 75251 | Oil & Gas Operator | Jun 2025 |