Research
I am interested in modeling flow and transport in natural porous media. Application areas include reservoir simulation and subsurface CO2 sequestration. Current research activities include: (1) modeling unstable miscible and immiscible flows in heterogeneous formations, (2) developing multiscale formulations and scalable linear/nonlinear solution algorithms for multiphase flow in large-scale subsurface systems, and (3) developing stochastic approaches for quantifying the uncertainty associated with predictions of subsurface flow performance.

Teaching
I teach courses on multiphase flow in porous media and numerical reservoir simulation.

Professional Activities
Associate Director, Stanford Center for Computational Earth and Environmental Sciences (CEES), 2007-2010; President's Individual Achievement Award, jointly sponsored by Chevron and Schlumberger, for successful completion of the Intersect Project (next generation reservoir simulator), 2003; co-director, Stanford Reservoir Simulation Affiliates Program (SUPRI-B), 2006-present; member, SPE Continuing Education Committee, 2006-present; editorial board, Transport in Porous Media, 2005-2010; advisory panel, Center for Computational Earth and Environmental Science, 2005-present; graduate admissions committee, Department of Energy Resources Engineering, 2004-present; editorial board, SPE Journal, 2000-present; member, SPE, AGU, APS, SIAM, 1999-present; Edmund W. Littlefield Fellow, 1993-94