Seismic shear transverse wave inversion model construction method, porosity prediction method and device

The invention relates to the field of oil and gas field development, in particular to a seismic shear transverse wave inversion model construction method and a porosity prediction method and device. Comprising the following steps: constructing a seismic shear transverse wave inversion initial model according to logging data and seismic data; determining a synthetic seismic record according to the seismic shear transverse wave inversion initial model and the transverse wave reflection coefficient approximation equation; according to the seismic data, the synthetic seismic record and the seismic shear transverse wave inversion initial model, determining an objective function of the seismic shear transverse wave inversion initial model; and iteratively updating parameters in the seismic shear transverse wave inversion initial model by using the target function, and determining the finally obtained model as the seismic shear transverse wave inversion model. According to the method, a reliable shear modulus invers