Generalized low of multiphase through porous media and «coupling» effects during the oil displacement by water

Generalized low of multiphase flow through heterogenic medium is analyzed. It takes into consideration the viscosity interaction between fluids, capillary and gravitational effects. A particular case — two-phase filtration flow as the base of water flooding technology — is considered. The method of determination of the new material functions («coupling» phase permeability) and theirs quantitative contribution into displacement parameters are obtained.