Abstract: In this article, a procedure of making a two-dimentional physical model of micro-layered sandstone and the technique of microphotography are presented. The movement of fluids through porous medium can be observed directly with a projector. The technique has provided a rapid, accurate and convenient method for observing the variations of flooding fronts and studying oil displacement mechanism and residual oil distribution intended for enchancement of oil recovery. Emphasis is laid on the characteristics and mechanism of oil displacement by waterflooding, microemulsion and surfactant solutions, on the evaluation of the application of polymer buffer slug in fluid mobility improvement. A trace quantitative determination for a Part of test process has also been conducted,