An approach to compensate for attenuation effects in reverse-time migration

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

Abstract

Strong attenuation anomalies can significantly lower the resolution of the seismic image in reduced amplitude, shifted phase, and frequency content loss. To overcome these attenuation effects thus improve the image resolution, in this study, I report a method to compensate for attenuation effects in reverse-time migration. Because attenuation effects include amplitude loss and velocity dispersion, to compensate for attenuation effects needs to take care of both. Unfortunately, conventional viscoacoustic/elastic modeling is difficult to be used for such the attenuation compensation. In contrast, I show that it is easy to implement attenuation compensation in a novel viscoacoustic wave equation by reversing the sign of the absorption operator and leaving the sign of the dispersion operator unchanged. By testing this method in several synthetic examples, I believe that the proposed attenuation compensated imaging approach is promisingly helpful to improve the resolution of seismic images.

Original languageEnglish (US)
Title of host publicationSociety of Exploration Geophysicists International Exposition and 84th Annual Meeting SEG 2014
PublisherSociety of Exploration Geophysicists
Pages3796-3800
Number of pages5
ISBN (Print)9781634394857
DOIs
StatePublished - Jan 1 2014
EventSociety of Exploration Geophysicists International Exposition and 84th Annual Meeting SEG 2014 - Denver, United States
Duration: Oct 26 2014Oct 31 2014

Publication series

NameSociety of Exploration Geophysicists International Exposition and 84th Annual Meeting SEG 2014

Other

OtherSociety of Exploration Geophysicists International Exposition and 84th Annual Meeting SEG 2014
CountryUnited States
CityDenver
Period10/26/1410/31/14

Fingerprint

reaction time
attenuation
image resolution
wave equation
anomaly
operators
reversing
effect
wave equations
modeling
anomalies
loss
method

All Science Journal Classification (ASJC) codes

  • Geophysics

Cite this

Zhu, T. (2014). An approach to compensate for attenuation effects in reverse-time migration. In Society of Exploration Geophysicists International Exposition and 84th Annual Meeting SEG 2014 (pp. 3796-3800). (Society of Exploration Geophysicists International Exposition and 84th Annual Meeting SEG 2014). Society of Exploration Geophysicists. https://doi.org/10.1190/segam2014-0596.1
Zhu, Tieyuan. / An approach to compensate for attenuation effects in reverse-time migration. Society of Exploration Geophysicists International Exposition and 84th Annual Meeting SEG 2014. Society of Exploration Geophysicists, 2014. pp. 3796-3800 (Society of Exploration Geophysicists International Exposition and 84th Annual Meeting SEG 2014).
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abstract = "Strong attenuation anomalies can significantly lower the resolution of the seismic image in reduced amplitude, shifted phase, and frequency content loss. To overcome these attenuation effects thus improve the image resolution, in this study, I report a method to compensate for attenuation effects in reverse-time migration. Because attenuation effects include amplitude loss and velocity dispersion, to compensate for attenuation effects needs to take care of both. Unfortunately, conventional viscoacoustic/elastic modeling is difficult to be used for such the attenuation compensation. In contrast, I show that it is easy to implement attenuation compensation in a novel viscoacoustic wave equation by reversing the sign of the absorption operator and leaving the sign of the dispersion operator unchanged. By testing this method in several synthetic examples, I believe that the proposed attenuation compensated imaging approach is promisingly helpful to improve the resolution of seismic images.",
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Zhu, T 2014, An approach to compensate for attenuation effects in reverse-time migration. in Society of Exploration Geophysicists International Exposition and 84th Annual Meeting SEG 2014. Society of Exploration Geophysicists International Exposition and 84th Annual Meeting SEG 2014, Society of Exploration Geophysicists, pp. 3796-3800, Society of Exploration Geophysicists International Exposition and 84th Annual Meeting SEG 2014, Denver, United States, 10/26/14. https://doi.org/10.1190/segam2014-0596.1

An approach to compensate for attenuation effects in reverse-time migration. / Zhu, Tieyuan.

Society of Exploration Geophysicists International Exposition and 84th Annual Meeting SEG 2014. Society of Exploration Geophysicists, 2014. p. 3796-3800 (Society of Exploration Geophysicists International Exposition and 84th Annual Meeting SEG 2014).

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

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Zhu T. An approach to compensate for attenuation effects in reverse-time migration. In Society of Exploration Geophysicists International Exposition and 84th Annual Meeting SEG 2014. Society of Exploration Geophysicists. 2014. p. 3796-3800. (Society of Exploration Geophysicists International Exposition and 84th Annual Meeting SEG 2014). https://doi.org/10.1190/segam2014-0596.1