| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | Daystar Petroleum, Inc. | Eureka, KS 67045 | Oil & Gas Operator | Jun 2025 |
| 2 | Delhi Gas Pipeli | Gas Operator | Aug 1998 | |
| 3 | Delhi Pipeline | Oil & Gas Operator | Sep 1999 | |
| 4 | Derrick Resources Inc. | Henryetta, OK 74437-4249 | Oil & Gas Operator | Jun 2025 |
| 5 | Deutsch Oil Company | Oil & Gas Operator | Jun 2025 | |
| 6 | Diamond Chemical | Oil & Gas Operator | Jan 1995 | |
| 7 | Dominion Oklahoma Texas Expl & Prod Inc | Oklahoma City, OK 73134 | Oil & Gas Operator | Aug 2013 |