The invention provides a
hydraulic fracturing simulation device, which comprises a pressure pump, a function module, an execution module, a visual display module and a valve
assembly, the function module comprises a sand mixing unit and an oil-water separation unit, the execution module comprises a shaft
simulation unit and a multi-stage crack
simulation unit, and the shaft simulation unit and the multi-stage crack simulation unit are communicated. A gradient
pressure triggering structure is arranged in the multi-stage crack simulation unit so as to realize multi-stage crack progressive expansion; the valve
assembly comprises a first valve, a second valve, a third valve and a fourth valve, the first valve is connected with the pressure pump and the sand mixing unit, the second valve is connected with the sand mixing unit and the shaft simulation unit, the third valve is connected with the pressure pump and the oil-water separation unit, and the fourth valve is connected with the oil-water separation unit and the shaft simulation unit; thus, through
integrated design, a valve
assembly double-loop switching mechanism and gradient triggering and visual collaborative
layout, the requirements for integration, continuity, high simulation and high precision of the
hydraulic fracturing experiment are met, and the
hydraulic fracturing experiment
system fully meets the requirements for industry core development.