Producer Companies
- Canadian Natural and Resources Ltd.
- Tourmaline Oil Corporation
- Progress Energy
- Advantage Oil and Gas
- Canbriam Energy
- Centrica Energy
- Crew Energy
- Kanata Energy
- Kaiser Exploration
- Polar Star
- Seven Generations
- Todd Energy
Past Producer Companies
- Murphy Oil Company Ltd.
- Artek Exploration Ltd.
- Encana Corporation
- Cenovus Energy Inc.
- AltaGas Processing Partnership
- Grizzly Oil Sands
- Talisman Energy
- Pengrowth Energy
- Barnwell of Canada Ltd.
- Sinopec Daylight Energy
- Paramount Resources Ltd.
- Quicksilver Resources Canada Inc.