Radial multi-hole composite oil reservoir karst cave calculation method, system, equipment and medium

The invention discloses a radial multi-hole composite oil reservoir karst cave calculation method, system, equipment and medium, S1, a fracture-vug type carbonate rock oil and gas reservoir is divided into two parts, one part is a karst cave and a matrix, the other part is an area where a fracture is located, and a fracture-vug type carbonate rock multi-hole oil and gas reservoir is simplified into a single-hole composite oil and gas reservoir; s2, calculating a shaft bottom dimensionless pressure solution of the single-hole composite oil and gas reservoir; and S3, obtaining a derivative curve of a shaft bottom dimensionless pressure solution, fitting the shaft bottom dimensionless pressure and the derivative curve thereof to actually measure the shaft bottom pressure and the derivative curve thereof, and when the two double logarithmic curves coincide, inverting a simplified karst cave radius so as to obtain the volume of the karst cave. And the volume of the karst cave when the karst cave is independently d