| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | East Resources Management LLC | Oil Operator | Oct 2010 | |
| 2 | Elm Ridge Exploration Company LLC | Bloomfield, NM 87413 | Oil & Gas Operator | Nov 2017 |
| 3 | Encana Oil & Gas (USA) Inc. | Denver, CO 80202 | Oil & Gas Operator | Oct 2020 |
| 4 | Entek GRB LLC | Denver, CO 80202 | Oil & Gas Operator | Oct 2021 |
| 5 | EOG Resources Inc | Midland, TX 79702 | Oil & Gas Operator | Apr 2024 |