| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | D U Investments | Salina, KS 67401 | Oil & Gas Operator | Dec 2009 |
| 2 | Davis, Billy F. | Tulsa, OK 74152 | Oil Operator | Jun 1988 |
| 3 | Daystar Petroleum, Inc. | Eureka, KS 67045 | Oil & Gas Operator | Dec 2023 |
| 4 | Dell-Ray Investments, Inc. | Nickerson, KS 67561 | Oil Operator | Dec 2019 |
| 5 | Driller'S & Prod | Oil & Gas Operator | Oct 1994 | |
| 6 | Drillers & Producers, Inc. | Newton, KS 67114 | Oil Operator | Dec 2019 |