- Aransas Petroleum Co
- Aransas Petroleum Co
- Arrow Petroleum Co
- Arrow Petroleum Co
- Coates Energy Trust
- Coates Energy Trust
- Compressor & Engine Svc
- Compressor & Engine Svc
- Double U Oil Co
- Double U Oil Co
- Hollimon Oil Corp
- Hollimon Oil Corp
- Hurd Enterprises LTD
- Hurd Enterprises LTD
- Lightning Oil Co
- Lightning Oil Co
- Meredith Mallory Jr Investment
- Meredith Mallory Jr Investment
- Michelson Energy Co
- Michelson Energy Co
- Oso Exploration Co
- Oso Exploration Co
- Primavera Resources
- Primavera Resources
- S W Blount III
- S W Blount III
- Seeker Oil Co
- Seeker Oil Co
- Tasajillo Energy
- Tasajillo Energy
- Tidemark Petroleum
- Tidemark Petroleum