SIMULATION OF CAPILLARY-DOMINATED DISPLACEMENTS IN MICROTOMOGRAPHIC IMAGES OF RESERVOIR ROCKS

Displacement simulation in realistic pore networks, such as those derived from X-ray microtomography, is presented for the regime where capillarity controls fluid motions and spatial distributions. Complex displacement sequences involving both imbibition and drainage are constructed to extract wettability indices. The percolation properties of predicted equilibrium phase distributions are analyzed. Equilibrium fluid distributions are used to model transport properties for each phase.