| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | D & I Incorporat | Gas Operator | Jun 1990 | |
| 2 | D. Jackson Rentals LLC | Easton, KS 66020 | Oil Operator | Sep 2025 |
| 3 | Dark Horse | Oil Operator | Jun 2025 | |
| 4 | Daystar Petroleum Inc | Eureka, KS 67045 | Oil & Gas Operator | Sep 2025 |