| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | Dale Operating Company | Dallas, TX 75207 | Oil & Gas Operator | Sep 2026 |
| 2 | Delaware Davis Petroleum Corp. | Houston, TX 77056 | Oil & Gas Operator | Jan 2000 |
| 3 | Devon Energy Production Company, L.P. | Oklahoma City, OK 73102 | Oil & Gas Operator | Sep 2026 |
| 4 | DJD Drilling Corporation | Graham, TX 76450 | Oil Operator | Jan 2010 |