| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | D. G. Oil Co. | Dennis, TX 76439 | Oil & Gas Operator | Dec 2024 |
| 2 | D. I. Dupree | Oil & Gas Operator | Sep 2015 | |
| 3 | Dallas Production, Inc. | Dallas, TX 75206 | Oil & Gas Operator | Mar 2021 |
| 4 | Danos Oil & Gas LLC | Oil & Gas Operator | May 2024 | |
| 5 | Decker & Associates | Oil & Gas Operator | Mar 1991 | |
| 6 | Diversified Production LLC | Keithville, LA 71047 | Oil & Gas Operator | Dec 2024 |
| 7 | Dow Mineral & Royalty Co, Inc | Oil & Gas Operator | Jun 1994 | |
| 8 | Dupree And Dupree | Oil Operator | Dec 1998 | |
| 9 | Dzurik Interests, Inc. | Oil & Gas Operator | May 2024 |