A comparison of inversion techniques for estimating Vp/Vs from 3D seismic data

Paul Fyfe Anderson, Laurence R. Lines

There are a variety of methods that can be used to extract rock-properties information from seismic data. Three of the methods that can be used, include;

1. AVO analysis, followed by post-stack inversion of the AVO attributes (Goodway, et al.)

2. Prestack inversion of the P-wave data directly to impedance (Hampson et al.)

3. Joint prestack inversion of the P-wave data and converted wave data directly to impedance (Hampson et al.)

After each of these inversions has completed, one of a variety of rock properties can be calculated. This paper compares the results of estimating Vp/Vs using each of the above mentioned techniques.