There are some forces active in oil and gas reservoirs, including capillary, viscous, gravity, diffusive, and convective forces. The magnitude of each force may be different from one case to other, depending on a number of factors. The rock and fluid properties, size and height of reservoir, temperature and pressure are important factors which dictate the magnitude of each force for a certain reservoir. I am looking for examples of real cases where each force is measured and/or estimated and compared with other forces.