Background velocity inversion by phase along reflection wave paths

Han Yu, Bowen Guo, Gerard T. Schuster

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

2 Scopus citations

Abstract

A background velocity model containing the correct lowwavenumber information is desired for both the quality of the migration image and the success of waveform inversion. We propose to invert for the low-wavenumber part of the velocity model by minimizing the phase difference between predicted and observed reflections. The velocity update is exclusively along the reflection wavepaths and, unlike conventional FWI, not along the reflection ellipses. This allows for reconstructing the smoothly varying parts of the background velocity model. Tests with synthetic data show both the benefits and limitations of this method.
Original languageEnglish (US)
Title of host publicationSEG Technical Program Expanded Abstracts 2014
PublisherSociety of Exploration Geophysicists
Pages3231-3236
Number of pages6
DOIs
StatePublished - Aug 5 2014

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