Establishment method of physical model capable of forecasting waterflood development of sandstone reservoirs

The invention discloses an establishment method of a physical model capable of forecasting waterflood development of sandstone reservoirs, comprising the following steps: establishing similarity criterion of reservoir water flooding development simulation according to the characteristic of oil and water two-phase seepage flow of three-dimensional reservoirs, wherein the similarity criterion includes similarity of shape to space, geometric similarity of shaft, similarity of physical properties of rocks, oil and water viscosity similarity, dynamics similarity, time similarity, saturation distribution similarity and potential distribution similarity; providing a realization approach of the similarity criterion and designing the physical model according to the similarity criterion; and making the physical model. The invention provides a set of complete novel technical methods for simulating and forecasting oil and water seepage flow and waterflood development processes of sandstone reservoirs by physical simulation.