Visco-acoustic full waveform inversion with Q-compensation

Z. Xue, S. Fomel, T. Zhu

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Scopus citations

Abstract

In the real Earth, propagating waves can be attenuated due to the anelastic nature of subsurface media, which results in an attenuated gradient for full waveform inversion (FWI). We propose to use phase-dispersion and amplitude-loss decoupled constant-Q wave equation to formulate a Q-compensated gradient, which has the recovered amplitude while preserving the correct kinematics. The gradient compensation is implemented by reversing the sign of the amplitude-loss term in both forward and adjoint operators. Synthetic examples demonstrate that FWI with Q-compensation has a faster reconstruction of velocity model, especially for its deep structures.

Original languageEnglish (US)
Title of host publication79th EAGE Conference and Exhibition 2017
PublisherEuropean Association of Geoscientists and Engineers, EAGE
ISBN (Electronic)9789462822177
DOIs
StatePublished - 2017
Event79th EAGE Conference and Exhibition 2017: Energy, Technology, Sustainability - Time to Open a New Chapter - Paris, France
Duration: Jun 12 2017Jun 15 2017

Publication series

Name79th EAGE Conference and Exhibition 2017

Other

Other79th EAGE Conference and Exhibition 2017: Energy, Technology, Sustainability - Time to Open a New Chapter
CountryFrance
CityParis
Period6/12/176/15/17

All Science Journal Classification (ASJC) codes

  • Geochemistry and Petrology
  • Geophysics

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    Xue, Z., Fomel, S., & Zhu, T. (2017). Visco-acoustic full waveform inversion with Q-compensation. In 79th EAGE Conference and Exhibition 2017 (79th EAGE Conference and Exhibition 2017). European Association of Geoscientists and Engineers, EAGE. https://doi.org/10.3997/2214-4609.201700716