De-blending reverse-time migration

Tong W. Fei, Yi Luo, Gerard Schuster

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

27 Scopus citations

Abstract

Reverse-time migration (RTM), based on the full two-way wave equation, has gained interest and become a popular imaging tool for complex structures in the last few years. The method is well-known for its ability to better image the steeply dipping and overturned structures than the migration methods based on the one-way wave equation extrapolation. However, the RTM image often contains low frequency and backscattering noise, and the imaging quality is sensitive to the migration velocity. In order to improve the RTM imaging quality and make the RTM image less sensitive to the velocity model, we developed an RTM de-blending technique which separates upgoing and downgoing source and receiver wavefields, and then use them to construct final RTM images. Test results show that decomposed images obtained from only the downgoing source and receiver wavefields are less sensitive to velocity. It removes unwanted noise and migration artifacts from conventional RTM, and the imaging quality is greatly improved compared with a conventional RTM image.

Original languageEnglish (US)
Title of host publicationSociety of Exploration Geophysicists International Exposition and 80th Annual Meeting 2010, SEG 2010
PublisherSociety of Exploration Geophysicists
Pages3130-3134
Number of pages5
ISBN (Print)9781617389801
StatePublished - Jan 1 2010
EventSociety of Exploration Geophysicists International Exposition and 80th Annual Meeting 2010, SEG 2010 - Denver, United States
Duration: Oct 17 2010Oct 22 2010

Publication series

NameSociety of Exploration Geophysicists International Exposition and 80th Annual Meeting 2010, SEG 2010

Conference

ConferenceSociety of Exploration Geophysicists International Exposition and 80th Annual Meeting 2010, SEG 2010
CountryUnited States
CityDenver
Period10/17/1010/22/10

ASJC Scopus subject areas

  • Geophysics

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