Self-adaptive seismic shear wave velocity prediction method and device

The invention discloses a self-adaptive seismic shear wave velocity prediction method and device, and the method comprises the steps: building a porous rock physical model which comprises an initial equivalent pore shape factor; obtaining a second bulk modulus and a second shear modulus of the dry rock according to the model and the first bulk modulus and the first shear modulus of the rock matrix; obtaining a third bulk modulus of the fluid, and obtaining a fourth bulk modulus and a third shear modulus of the saturated fluid rock according to the second bulk modulus, the second shear module and the third volume module; obtaining a theoretical seismic longitudinal wave velocity according to the fourth bulk modulus and the third shear modulus; obtaining an actual seismic longitudinal wave speed, adjusting the initial equivalent pore shape factor according to a difference value between the actual seismic longitudinal wave speed and the theoretical seismic longitudinal wave speed, and obtaining a target equivale