Recent and current clients include the following organisations:
- Association of International Petroleum Negotiators (AIPN)
- American International Group (AIG)
- ARUP
- Beirne Maynard Parsons
- Cargill
- EBRD
- El Paso Energy
- ExxonMobil
- Gryphon Minerals
- Hess Corporation
- HudBay Minerals
- International Energy Agency (IEA)
- International Petroleum Industry Environmental Conservation Association (IPIECA)
- Kerogen Capital
- Kreditanstalt für Wiederaufbau (KfW)
- Kriteria Consultores
- Macquerie Group
- Madagascar Oil
- Marathon Oil
- Pincock Allen & Holt
- Pluspetrol
- Repsol
- RPS
- Rockhopper Exploration
- Schlumberger
- Shell International
- Tengizchevroil
- Three Legs Resources
- Trans Adriatic Pipeline
- UNEP-WCMC
- World Bank
- Worley Parsons
