Abstract
SummaryA method to estimate capillary pressure and relative permeability curves simultaneously from transient, multirate centrifuge experiments performed on homogeneous rock is presented. The unknown functions are represented with B-splines, and the number of knots and coefficient values are selected through a regression-based procedure. The method is demonstrated by use of experimental data for dolomite and sandstone samples with air/water and oil/water fluid systems. An analysis of the accuracy of the estimates is presented. The capillary pressure curve and regions of both relative permeability curves can be estimated accurately.
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