A Modified Leverett J-Function for the Dune and Yates Carbonate Fields: A Case Study

摘要

Effective medium thoery (EMT) has been used to model capillary pressure (P_c) as functio of water sturation (S_W) in porous media. Thue EMT model results show that both the magnitude and profile of the P_c-S_W profile are strongly affected by changing the proe-size distribution parameters and the rock pore geometry. Tortuosity, which is a function of these parameters, is used in developing a drainage capillary pressure modle based on data from the Dune and Yates fields. Capillary pressure is normalized with respect to an average pore radius that includes tortuosity.