| Popis: |
Conventional pre-stack inversion for lithologic parameters are mostly based on the approximation formula of the isotropic theory, and it only uses P-P wave data. This method has some shortcomings both in theories and accuracy of invsion, and multi-solution of the inversion is its fatal problem. P-P and P-SV wave joint inversion enhances the stability and reliability, which adds several constraint conditions. In this paper, based on the anisotropy theory, the joint inversion is calculated by using the actual data of 3D3C seismic. Compared with the pre-stack inversion of P-P wave data, the joint inversion is more stable and reliable, and it obviously improves the accuracy of inversion by using the partial stack data of P-P and P-SV waves. It makes best use of AVO information of seismic data as far as possible, supplements P-SV wave data as input, and uses the two independent variables of P-P and P-SV waves, solving knottZoeppritz equations. |
