- Alpine Inc
- Crescent Exploration
- Crossbow Production Co LLC
- Faulkner Exploration
- Flatrock Energy Partners
- Friedel Petroleum Corp
- Hill Land Management Inc
- L & M Exploration
- M A Miceli
- Mercer Exploration
- Mercer Petroleum Management
- Midwestern Exploration Co
- Myers & Myers Inc
- OKT Resources
- Pangaea Exploration Corp
- Ranken Energy Corp
- Rodger H Brooks
- Rodger H Brooks
- SEC Production Inc
- Stone Canyon Exploration
- Viking Exploration LLC
- Waller Exploration LLC
- Weststar Oil & Gas Inc
