A VTI anisotropic media inversion method based on the exact reflection coefficient equation

Anisotropy is widespread in the Earth’s crust, and VTI (vertical axis symmetry transverse isotropy) anisotropy common due to stratigraphic pressure. Disregarding leads inaccurate inversion results media. To estimate accurate elastic parameters, exact reflection coefficient equation of media should be used. This nonlinear more than commonly used linear equation. Although based on a complex problem, it still computable. Therefore, for media, we derive objective function combining Bayesian theory use iterative reweighted least squares method fast stable solution. Adding can improve robustness algorithm. The accuracy noise immunity tested with synthetic data. Finally, applied field data obtains parameters. provide an understanding subsurface formations serve as base calculating fluid fracture distribution.