Agip (ENI), Italy

AERI, Canada

Anadarko, USA

Applied Reservoir Engineering, Canada

BP Exploration, UK

ChevronTexaco, USA

Core Labs, Canada

CNRL, Canada

Devon Canada

Direct Energy, Canada

Dominior Energy, Canada

Duvernay Oil Corporation, Canada

Eastern Star Gas Ltd., Australia

Equatorial, Canada

Gilbert Laustsen Jung, Canada

Halliburton, USA

Husky, Canada

Imperial Oil, Canada

INfiniti Resources, Canada

Japan Canada Oil Sands, Canada

Lithos, Canada

Maersk Oil and Gas, Denmark

Markedon, Canada

Monolith Oil Corporation, Canada

National Fuels, Canada

Nexen Inc., Canada

Niko Resources Ltd, Canada

Norsk Hydro, Norway

Petro-Canada, Canada

Saudi Aramco, Saudi Arabia

Sakhalin Energy Investment Company (SEIC), Netherlands

Statoil, Norway

Terra Energy, Canada

Total, France

VVNP, Slavakia

Zargon, Canada