#$%^&*AU2020101364A420200820.pdf#####ABSTRACT The present invention aims at providing a simulation method for flow field of multi-stage fracturing on horizontal well in tight oil reservoir, which comprises establishing a mathematical model of seepage considering the threshold pressure gradient and deriving the pressure distribution formula after fracturing; based on the principle of complex potential superposition, calculating the pressure field distribution of multi-stage fracturing on horizontal well in tight oil reservoir; and establishing a criterion for identifying the effective producing range of multi-stage fracturing on horizontal well in tight oil reservoir to accurately simulate the flow field range of multi-stage fracturing in tight oil reservoir.Regardless of the excitation 500 effect between the fractures. Considering the excitation effect between the fractures. 400 300Ce2001000 50 100 150 200 Distance(m) Figure Regardless of the excitation 500 effect between the fractures. Considering the excitation effect between the fractures. 400 300 4a) 200 100 0 0 50 100 150 200 250 300 Distance(m) Figure2 1/ 2
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