Multiwave pre-stack AVA parameter inversion in TI media

AVA(Amplitude Versus Angle) plays an important part in the seismic data processing of the multi-wave.Based on the Zoeppritz's equation of the transversely isotropic media,seismic multi-wave AVA inversion of the transversely isotropic media parameter has been discussed in this paper.In the study of the AVA,inversion is the method that by use of the AVA curves measured and multi-wave AVA parameter inversion equation obtained the speed and density value of the underground P and S waves.Based on the establishment of the forward models,generalized linear inversion method is adopted to respectively analyze the two-tier and multi-level theoretical models using the analytical method and perturbation method to get the P-P wave velocity,P-SV wave velocity,stratum density and anisotropy coefficient.Model calculations show that the method is correct.Finally,we com-bined the actual multi-wave data to implement AVA parameters inversion.Therefore,all of the above results have proved the multi-wave AVA stratum parameter inversion discussed in this paper is feasible.It plays an important part in prediction of lithology.