Underbalanced Operations & Managed Pressure Drilling Committee
2012 CHAIR
- Chairman: Dag Ove Molde, Statoil
E-mail Address: ubochairman@iadc.org
2012 VICE CHAIRMAN
- Vice Chairman: Mike Vander Staak, Hess Corporation
2012 SUBCOMMITTEE CHAIRS
UBO Subcommittee:
- Chairman: Martin Culen, Blade Energy Partners
MPD Subcommittee:
- Co-Chairman: George Medley, Signa Engineering
- Co-Chairperson: Sara Shayegi, Shell International E&P
- Co-Chairman: David Pavel, Weatherford
Dual Gradient Drilling Subcommittee:
- Chairman: John Cohen, AGR Drilling Services
- Vice Chairperson: Kristin Falk, Ocean Riser Systems
HSE & Training Subcommittee:
- Chairman: Derek Hibbard, Weatherford
- Vice Chairmain: Martin Culen, Blade Energy Partners
Outreach Subcommittee:
- Co-Chairman: Robert Goodwin, National Oilwell Varco
- Co-Chairman: Ian Davidson, Blade Energy Partners
Regulatory Liaison:
- USA: George Medley, Signa Engineering
- Norway: Inger Kjellevoll, Statoil
- Canada: Derek Hibbard, Weatherford
Mission Statement
“To promote the safe and efficient execution of underbalanced
operations and managed pressure drilling worldwide”.

