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Develop a method for 3D elastic reverse time migration to generate scalar images from vector S-waves for SP- and SS-imaging modes.

September 23, 2017Geophysics

SP- and SS-imaging for 3D elastic reverse time migration

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Authors

XGXufei GongDongfang Electric Corporation (China)QDQizhen DuChina University of Petroleum, Beijing QZQiang ZhaoShandong Normal University

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Implication

Computational modeling demonstrates scalar SP- and SS-wave separation in 3D elastic reverse time migration, indicating improved subsurface imaging accuracy for complex converted wave modes.

Key Points

Develop a method for 3D elastic reverse time migration to generate scalar images from vector S-waves for SP- and SS-imaging modes.
Separated the 3D elastic wavefield into P- and S-waves using Helmholtz decomposition.
Determined the normal direction of the raypath plane across each individual imaging grid point.
Decomposed vector S-waves into scalar SV- and SH-wave components using curl operators and applied correlation imaging conditions.
Resolved the directional unpredictability between incident S-waves and raypath planes by treating SV- and SH-waves as independent scalar modes.
Successfully produced distinct scalar SV-P, SV-SV, and SH-SH cross-correlation images without vector-induced polarity conflicts.

Cite This Study

Gong et al. (2017) studied this question.

synapsesocial.com/papers/6a74984d0b1b00a0ee0913d7 https://doi.org/10.1190/geo2017-0286.1

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Implication

Computational modeling demonstrates scalar SP- and SS-wave separation in 3D elastic reverse time migration, indicating improved subsurface imaging accuracy for complex converted wave modes.

SP- and SS-imaging for 3D elastic reverse time migration

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Implication

Key Points

Cite This Study

SP- and SS-imaging for 3D elastic reverse time migration

Discussion

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Implication

Key Points

Cite This Study

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