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Three-phase flow modelling using pore-scale capillary pressures and relative permeabilities for mixed-wet media at the continuum-scale

The overarching aim of pore-scale multi-phase flow modelling is incorporation of sub-grid scale physics into large-scale simulations, usually through effective flow functions. However, laboratory measurement of three-phase flow functions along all relevant displacement trajectories is not feasible. This paper, with international collaboration, describes a novel proof-of-concept multi-scale approach, in which the flow functions in a continuum-scale model are calculated directly at the pore-scale. This work has inspired the pore-to-reservoir modeling study DOI:10.2118/147991-PA and has been the precursor of a major industry-funded project (International Centre for Carbonate Reservoirs, £1.8M http://www.pet.hw.ac.uk/research/carbonate-reservoirs.htm, POREOR).