Vector elastic deconvolution migration with dual wavefield decomposition

Chi, Benxin; Gao, Kai; Huang, Lianjie

doi:10.1190/geo2020-0826.1

Vector elastic deconvolution migration with dual wavefield decomposition

Journal Article · Fri Jul 02 00:00:00 EDT 2021 · Geophysics

DOI:https://doi.org/10.1190/geo2020-0826.1· OSTI ID:1873357

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Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

We report elastic-wave imaging using multicomponent data can provide more useful subsurface information than acoustic-wave imaging, but it is usually algorithmically challenging. We have developed a vector elastic deconvolution migration method for high-resolution imaging of subsurface structures in isotropic and anisotropic elastic media. Our new method uses a vector deconvolution imaging condition based on dual wavefield decomposition, including an explicit directional wavefield separation using the Hilbert transform and a P/S vector wavefield decomposition using the low-rank decomposition method. Using three elastic models, we numerically determine that our new method produces notably higher resolution and more amplitude-balanced elastic images compared with a crosscorrelation-based vector elastic reverse time migration method.

View Accepted Manuscript (DOE)

Research Organization:: Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)

Sponsoring Organization:: Los Alamos National Laboratory (LANL), Los Alamos, NM (United States); USDOE; USDOE National Nuclear Security Administration (NNSA)

Grant/Contract Number:: 89233218CNA000001

OSTI ID:: 1873357

Alternate ID(s):: OSTI ID: 3016119

Report Number(s):: LA-UR-20-29418; LA-UR-21-23071

Journal Information:: Geophysics, Journal Name: Geophysics Journal Issue: 4 Vol. 86; ISSN 0016-8033

Publisher:: Society of Exploration GeophysicistsCopyright Statement

Country of Publication:: United States

Language:: English

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Related Subjects

58 GEOSCIENCES
Hilbert transformations
Marmousi model
P-waves
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acoustical waves
body wave
cross-correlation
data acquisition
data processing
deconvolution
elastic materials
elastic waves
geophysical methods
imagery
reverse time migration
seismic methods
seismic migration
seismic waves
statistical analysis
wave fields

Vector elastic deconvolution migration with dual wavefield decomposition

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