Capillary pressure profile estimation using numerical method and centrifuge test data

Capillary pressure is a crucial parameter that affects the displacement of two or more immiscible fluids in porous media. Measuring capillary pressure as a function of saturation is essential for simulating the process of immiscible flooding in porous media, especially in oil reservoir rocks. The centrifuge method is one of the most widely used techniques for estimating capillary pressure in reservoir rock porous media. This study applied a numerical method to a one-dimensional equation with boundary conditions to simulate the flow of two immiscible fluids in the core plug for a centrifuge experiment. The study also tested oil-water and air-oil systems across various core plugs using a centrifuge device. It involved analyzing the experimental data output through a numerical calculation method to derive the capillary pressure correlation as a function of saturation. The correlation obtained for capillary pressure demonstrates an acceptable match with the experimental data and is applicable in other simulation software.