- Alexander C Boardman
- Amalgamated Explorations Inc
- Amalgamated Explorations Inc
- Arnold L Goldblatt
- Arnold L Goldblatt
- Atlantic Oil Corp
- Atlantic Oil Corp
- Basic Earth Science Systs Inc
- Basic Earth Science Systs Inc
- Baylor Van Meter Jr
- Baylor Van Meter Jr
- BTA Oil Producers
- BTA Oil Producers
- Caulkins Oil Co
- Caulkins Oil Co
- Coleman Oil & Gas Inc
- Coleman Oil & Gas Inc
- Connelly Exploration
- Connelly Exploration
- Coronado Oil Co
- Coronado Oil Co
- Davis Petroleum Corp
- Davis Petroleum Corp
- Double Eagle Petroleum Co
- Doyle T Grogan
- Eighty-Eight OIL LLC
- Evertson Oil Co
- G E Capital
- Greystone Energy Inc
- HGB Oil Corp
- Huseby Michael C Oil & Gas
- Key Production
- Koval Oil & Gas
- Leemar
- Mc Rae & Henry
- Neoga Oil Co
- PAR Oil Co
- Patina Oil & Gas Corp
- Peerless Inc
- Petro-Canada Resources USA Inc
- Samson Resources Co
- San Juan Resources
- Swanson Oil & Gas Inc
- TEPPCP Crude Oil
- Western Gas Resources Inc
- Williams Production Rmt
