Correlation of centrifuge capillary pressure data

Capillary pressure curves are helpful in studying the performance of reservoir rocks. Several methods are used to determine the capillary pressure curves. In this study Berea sandstone centrifuge capillary pressure measurements were carried out on more than twenty core samples that have different porosity and permeability values. The capillary pressure data are used with different forms of normalized water saturation in obtaining the correlation. This article shows that there are more than one correlation that can be obtained (exponential, linear, and polynomial forms). Also an improvement of the correlations was achieved by including certain parameters which represents the physical properties of the core sample with the normalized water saturation.