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International Journal of Petroleum and Geoscience Engineering
IJPGE 2015, 3(3), 144-148
A Comparative Study of Empirical Models for Measuring Capillary Pressure in One of Iranian Oil Reservoirs
ABSTRACT
Recently, various experimental and non-experimental methods have been proposed to measure the capillary pressure from core analysis. Due to the high cost of analysis and slow laboratory tests, researchers have had special attention on non-experimental methods which are generally based on mathematics. Theses mathematical formulas are mostly empirical which are derived according to reservoir rock’s properties. So, they may provide appropriate response in one region while performing very weak in another region. The purpose of this study is to evaluate the performance of some empirical methods for measuring capillary pressure from thirty-five samples provided from southern Iran. For this, Centrifuge method is selected as the experimental method. Capillary pressures were measured by applying this method using a drainage process and results were compared with the results of empirical models to determine which model best matches the experimental outputs. After all, Brooks and Corey model is recommended by the authors for capillary pressure measurement in the studied region.