Viscous fingering phenomenon simulator

The utility model relates to a viscous fingering phenomenon simulator. The viscous fingering phenomenon simulator comprises a liquid storage tank, an injection pump, an intermediate vessel, an injection valve, an injection pipe, a pressure sensor, a clapboard A, a fingering observation box, a discharge pipe, a discharge valve, a clapboard B, a pressure monitoring display, a liquid pigment box, a pigment pump, a pigment valve, a cover plate, a bolt A, a bolt B, a bolt C, a bolt D and a piston. The injection pump with adjustable flow rate and pressure is connected between the liquid storage tank and the intermediate vessel, a piston in the intermediate vessel is movable, ordinary water is located at one side of the piston in the intermediate vessel while invading water is located at the other side, the liquid pigment box is connected with the injection pipe through the pigment pump and pigment valve, and different grain diameters of rock particles are filled in the fingering observation box; two wave-shaped clapboards in the fingering observation box can reinforce the anisotropism simulation ability, the pressure sensor detects the displacement pressure difference, the pressure monitoring display displays the displacement pressure difference in real time, and the discharge pipe is used for discharging petroleum and invading water.