| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | Daylight Petroleum LLC | Houston, TX 77052 | Oil & Gas Operator | Oct 2025 |
| 2 | Denovo Oil & Gas, Inc. | Houston, TX 77210 | Oil & Gas Operator | May 1995 |
| 3 | Dixon Management Corp. | Oil & Gas Operator | May 1984 | |
| 4 | DMS Oil Company | Houston, TX 77042 | Oil & Gas Operator | Aug 2025 |
| 5 | Dna Petroleum Inc. | Oil Operator | Dec 2004 | |
| 6 | Docherty Operating, L.L.C. | Oil Operator | Dec 2024 | |
| 7 | Duke Energy Field Services Inc | Oil Operator | Mar 2000 | |
| 8 | Dune Operating Company | Dallas, TX 75201 | Oil & Gas Operator | Jun 2016 |
| 9 | Dynamic Exploration, Inc. | Oil & Gas Operator | Oct 2003 |