In consideration of the heterogeneity in Es3 reservoirs of Pucheng Oilfield, a newly built multilayer and multi-survey point core waterflooding model was used for a multilayer waterflooding test in high, middle and low permeability and heterogeneous reservoirs.

Based on the adsorption-film moisture migration mechanism and the changing in the volume content of the coupled deformations of the phase mediums in saturated frozen soils,the new unfrozen moisture migrating force model in the frozen soil with high confine pressure and the deformation corresponding equations of each phase medium are firstly got with the mass .

Twenty six samples from Chang 82 reservoir in wellblock Zhuang-19 of Xifeng oilfield are tested by means of sandstone micro-model for water-oil displacement experiment for the collection of the parameters of their permeability,oil saturation before displacement,remaining oil saturation and displacement efficiency under the different waterflood time and pressure.