| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | D. C. Malcolm, Inc. | Charleston, WV 25301 | Oil & Gas Operator | Dec 2021 |
| 2 | Diversified Production LLC | Keithville, LA 71047 | Oil & Gas Operator | May 2026 |
| 3 | Dixie Natural Gas Co. | Oil & Gas Operator | Dec 2002 | |
| 4 | Dolphin Energy LLC | Lake Worth, FL 33467 | Oil & Gas Operator | Jan 2026 |
| 5 | Dorward Energy Corporation | Saint Petersburg, FL 33701-3255 | Oil & Gas Operator | Dec 2024 |
| 6 | Dutch Ridge Gas Ventures, LLC | Charleston, WV 25339 | Oil & Gas Operator | Dec 2021 |