Abstract:Avoiding restriction conditions and approximation errors from the approximate formula, prestack wide-angle inversion based on the exact solution of Zoeppritz equations has higher inversion accuracy, and it is suitable for seismic data at large incident angles. However, complex relationships between elasticity parameters and reflection coefficients in Zoeppritz equations make it harder to improve the stability and the accuracy of the inversion algorithm. In view of this problem, a mutual constraint method based on the Bayes theory is proposed. By optimizing the perturbation calculation and relationship of rock physical constraints, the inversion algorithm stability and accuracy are improved. Using this method, we eliminate impacts of calcareous sandstone and depict main reservoir boundaries successfully in the LJL region.