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Micromodel studies of three‐fluid porous media systems: Pore‐scale processes relating to capillary pressure‐saturation relationships
Author(s) -
Soll W. E.,
Celia M. A.,
Wilson J. L.
Publication year - 1993
Publication title -
water resources research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.863
H-Index - 217
eISSN - 1944-7973
pISSN - 0043-1397
DOI - 10.1029/93wr00524
Subject(s) - micromodel , capillary pressure , porous medium , saturation (graph theory) , capillary action , wetting , materials science , fluid dynamics , porosity , mechanics , displacement (psychology) , multiphase flow , petroleum engineering , geology , geotechnical engineering , composite material , mathematics , physics , psychology , combinatorics , psychotherapist
An experimental approach to study physical processes affecting fluid behavior in three‐fluid porous media systems was designed and implemented. These experiments were designed to provide quantitative evidence of important pore‐scale displacement processes. A unique experimental approach using a two‐dimensional synthetic porous medium (micromodel) and digital image analysis (DIA) enabled both measurement of three‐fluid capillary pressure‐saturation relationships and analysis of fluid behavior at the pore level. Experiments were pressure controlled, and were designed to mimic measurements typically performed on laboratory cores. Only quasi‐static measurements were made, with a focus on capillary pressure‐saturation relations. Different orders of fluid infiltration with respect to wettability were studied. DIA made it possible to obtain quantitative information about the experiments, including fluid saturations, saturation changes between pressure steps, and movement of apparently isolated fluids through films. The results provide insights into important pore‐scale mechanisms and provide a basis for three‐fluid pore‐scale computations.