Testing pseudo-linear Zoeppritz approximations: Multicomponent and joint AVO inversion

Charles P. Ursenbach

Formulas for AVO (Amplitude Variation with Offset) inversion are briefly reviewed and two new expressions are presented. AVO inversion of P-wave, converted-wave, and joint data is carried out using experimental parameters and three theoretical techniques. It is shown that inversion of converted-wave data is more accurate than other sources. The accuracy of multicomponent inversion can be further improved using the pseudo-linear approximation presented here.