Hydraulic fracturing crustal stress calculation method considering irregular drill hole and fracture shape

The invention discloses a hydraulic fracturing ground stress calculation method considering irregular drill holes and fracture shapes. The method comprises the steps that a mapping function expression considering any irregular drill hole and fracture shape is calculated; substituting into a complex variable function expression to deduce the relationship between the far-field ground stress and the borehole wall stress under the plane strain condition; converting to polar coordinates to obtain a relation between a water pressure fracture direction and a maximum principal stress direction of far-field crustal stress; constructing a crack stress influence factor expression under a crack-free condition, and comparing the crack stress influence factor expression with a critical stress intensity factor to determine a relationship between crack rupture pressure and ground stress component; determining the relationship between closing pressure and ground stress; obtaining actually measured crack initiation pressure an