A Method of averaging Capillary Pressure Curves


G. M. Heseldin, Shell Canada Limited

C.W.L.S. luncheon meeting October 11, 1973



Capillary pressure data can be useful to calculate reservoir saturations provided a realistic average capillary pressure curve can be derived for a particular rock type. Since cap- illary pressure characteristics are known to vary with porosity or permeability, a mathematical procedure is developed whereby the resulting average curve is a single relationship dependent on that parameter. This average curve is especially useful in evaluating low porosity carbonate reservoirs as well as pro- viding a basis for generating one or more representative cap- illary pressure curves for reservoir simulation.


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