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Study on filtration rules of horizontal fracturing liquid based on fluid-solid coupling

Abstract A three-dimensional finite element model of layered porous media containing interlayers and reservoirs was established with ABAQUS software and the three-dimensional fluid-solid coupling solid element and cohesive bond element were adopted to describe the damage behaviors of rock and fracture, stimulate the initiation and propagation of horizontal fractures and the fluid filtration process, analyze and obtain the effect of geological and engineering factors on propagation parameters of the horizontal fracture and on the filtration distance, and analyze the significance of the parameters, including elastic modulus, construction displacement, permeability, viscosity of pressure liquid, ground stress, pore pressure and amount of construction fluid. Finally, the simulated rules were adopted to guide the design of fracturing parameters in actual wells, which has obtained remarkable effect after fracturing.