Factors Affecting the Equivalency of Different Capillary Pressure Measurement Techniques

Summary The results of a laboratory investigation of the effects of some factors that affect the equivalency of different drainage capillary pressure measurement techniques are presented. These factors are Bond number, clay alteration by sample drying, wettability, equilibration, sample orientation, and overburden pressure. The results, among other things, suggest an extension of the range oof validity of liquid/liquid centrifuge tests. A method of estimating contact angles of weakly wetting systems with capillary pressure data is presented.