Image-domain Q inversion

Yuqing Chen, Gaurav Dutta, Gerard T. Schuster

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

Abstract

Seismic waves traveling in the earth experience amplitude loss and velocity dispersion associated with strong subsurface attenuation. To compensate for these effects, the Q model should be first estimated and the data can be corrected. However, Q estimation from the data can be challenging if the data have a poor signal-to-noise ratio. To mitigate this problem, we develop a wave-equation Q inversion method in the image domain. This method seeks a Q model which minimizes the local wavenumber differences between a reference image without Q effects, and a Q migration image computed with the current Q model. Numerical tests on synthetic data demonstrate that the Q model inverted by this image-domain Q inversion method can lead to a noticeable improvement in the migration image quality.
Original languageEnglish (US)
Title of host publicationSEG Technical Program Expanded Abstracts 2018
PublisherSociety of Exploration Geophysicists
Pages4121-4125
Number of pages5
DOIs
StatePublished - Aug 27 2018

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