Shown that the commonly used methods of reduction of centrifuge capillary pressure data, based on the Hassler and Brunner theory, lead to double valued capillary pressure functions. To avoid this problem, an alternate equation with two methods of solution has been developed. This equation uses the concept of the center of forces to convert centrifuge data into capillary pressure curves. The proposed methods do not make assumptions about the form of the solution, nor do they use numerical differentiation of experimental data, and, lastly, they do not result in double valued capillary pressure curves. Several examples, including laboratory and analytical data with the computed capillary pressure curves, are presented along with a comparison of the results obtained using the new and several previously developed methods.

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