Results are presented from a newly developed technique that allows measuring drainage capillary pressure curves during core-flooding experiments;data have been collected for the N2/water and scCO2/brine system.One of the strengths of the proposed technique is that by combination with X-ray CT imaging,capillary pressure-saturation relationships can been obtained for mm-scale subsets of the rock sample;these are of high relevance as they directly and non-destructively quantify small-scale capillary heterogeneity in these systems.Furthermore,the spatial variability of the capillary pressure curve can be represented in terms of a single scaling factor,thus simplifying considerably the description of heterogeneity.The obtained scaling factors are further translated into a corresponding distribution of permeabilities,thus creating a unique and consistent framework where multiphase- and rock-properties are integrated.
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