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A Modified 2D Visco-Acoustic Waveform Inversion Scheme
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, 80th EAGE Conference and Exhibition 2018, Jun 2018, Volume 2018, p.1 - 5
Abstract
Summary
Seismic attenuation and velocity are two coupled parameters with different sensitivities. We propose to explicitly use the dispersion relation during full waveform inversion. In a first step, a classical visco-acoustic inversion is applied for a fixed quality factor, then a subsequent modified full waveform inver- sion leads to a faster convergence compared to the standard scheme. The approach is validated on a simple 2D synthetic data set mainly dominated by transmitted waves. The new scheme is an alternative to the Hessian-based strategy.
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