Technical Paper: Two Approaches for Q-Estimation and its Application to Seismic Inversion

Society: SEG
Paper Number:
Presentation Date: 2006

In this paper, we present two complimentary approaches for interval Q estimation from surface seismic data. A layer-based approach and smooth solutions algorithms are presented and evaluated by comparing estimated Q from surface seismic data with VSP data. We also show how, by using a 3D attenuation estimation algorithm together with a time- and space-varying compensation algorithm (inverse Q filtering), we were able to derive an attenuation field and to improve the wavelet stability as well as the P-impedance inversion results. The choice of attenuation estimation algorithm is related to the statistical nature of the attenuation field in the subsurface.

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