Refracturing parameter optimization design method for fractured-vuggy carbonate reservoir

The invention discloses a refracturing parameter optimization design method for a fracture-cavity body carbonate reservoir. According to the technical scheme, the refracturing parameter optimization design method comprises the following steps that a three-dimensional geologic model of the fracture-cavity body-containing carbonate reservoir is established; carrying out three-dimensional geomechanical modeling on the fractured-vuggy carbonate reservoir; forming an initial three-dimensional crustal stress field of the fractured-vuggy carbonate reservoir; carrying out fracturing fracture flow integrated simulation, and carrying out inversion to obtain an initial pressure fracture form and pressure field distribution characteristics at different moments; establishing a four-dimensional dynamic crustal stress model of the fractured-vuggy carbonate reservoir; carrying out refracturing numerical simulation and yield prediction on the fractured-vuggy carbonate reservoir; carrying out fracture-cavity body carbonate roc