3D Prestack Fourier Mixed-Domain (FMD) depth migration for VTI media with large lateral contrasts
Although many 3D One-Way Wave-equation Migration (OWEM) methods exist for VTI media, most of them struggle either with the stability, the anisotropic noise or the computational cost. In this paper we present a new method based on a mixed space- and wavenumber-propagator that overcome these issues ve...
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ftdatacite:10.48550/arxiv.1906.07474 2023-05-15T15:39:01+02:00 3D Prestack Fourier Mixed-Domain (FMD) depth migration for VTI media with large lateral contrasts Zhao, Hao Gelius, Leiv J. Tygel, Martin Nilsen, Espen Harris Evensen, Andreas Kjelsrud 2019 https://dx.doi.org/10.48550/arxiv.1906.07474 https://arxiv.org/abs/1906.07474 unknown arXiv https://dx.doi.org/10.1016/j.jappgeo.2019.06.009 Creative Commons Attribution Non Commercial Share Alike 4.0 International https://creativecommons.org/licenses/by-nc-sa/4.0/legalcode cc-by-nc-sa-4.0 CC-BY-NC-SA Geophysics physics.geo-ph Computational Physics physics.comp-ph FOS Physical sciences article-journal Article ScholarlyArticle Text 2019 ftdatacite https://doi.org/10.48550/arxiv.1906.07474 https://doi.org/10.1016/j.jappgeo.2019.06.009 2022-03-10T16:47:14Z Although many 3D One-Way Wave-equation Migration (OWEM) methods exist for VTI media, most of them struggle either with the stability, the anisotropic noise or the computational cost. In this paper we present a new method based on a mixed space- and wavenumber-propagator that overcome these issues very effectively as demonstrated by the examples. The pioneering methods of phase-shift (PS) and Stolt migration in the frequency-wavenumber domain designed for laterally homogeneous media have been followed by several extensions for laterally inhomogeneous media. Referred many times to as phase-screen or generalized phase-screen methods, such extensions include as main examples of the Split-step Fourier (SSF) and the phase-shift plus interpolation (PSPI). To further refine such phase-screen techniques, we introduce a higher-order extension to SSF valid for a 3D VTI medium with large lateral contrasts in vertical velocity and anisotropy parameters. The method is denoted Fourier Mixed-Domain (FMD) prestack depth migration and can be regarded as a stable explicit algorithm. The FMD technique was tested using the 3D SEG/EAGE salt model and the 2D anisotropic Hess model with good results. Finally, FMD was applied with success to a 3D field data set from the Barents Sea including anisotropy. : Accepted article in Journal of Applied Geophysics Article in Journal/Newspaper Barents Sea DataCite Metadata Store (German National Library of Science and Technology) Barents Sea Hess ENVELOPE(-65.133,-65.133,-67.200,-67.200) |
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Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
unknown |
topic |
Geophysics physics.geo-ph Computational Physics physics.comp-ph FOS Physical sciences |
spellingShingle |
Geophysics physics.geo-ph Computational Physics physics.comp-ph FOS Physical sciences Zhao, Hao Gelius, Leiv J. Tygel, Martin Nilsen, Espen Harris Evensen, Andreas Kjelsrud 3D Prestack Fourier Mixed-Domain (FMD) depth migration for VTI media with large lateral contrasts |
topic_facet |
Geophysics physics.geo-ph Computational Physics physics.comp-ph FOS Physical sciences |
description |
Although many 3D One-Way Wave-equation Migration (OWEM) methods exist for VTI media, most of them struggle either with the stability, the anisotropic noise or the computational cost. In this paper we present a new method based on a mixed space- and wavenumber-propagator that overcome these issues very effectively as demonstrated by the examples. The pioneering methods of phase-shift (PS) and Stolt migration in the frequency-wavenumber domain designed for laterally homogeneous media have been followed by several extensions for laterally inhomogeneous media. Referred many times to as phase-screen or generalized phase-screen methods, such extensions include as main examples of the Split-step Fourier (SSF) and the phase-shift plus interpolation (PSPI). To further refine such phase-screen techniques, we introduce a higher-order extension to SSF valid for a 3D VTI medium with large lateral contrasts in vertical velocity and anisotropy parameters. The method is denoted Fourier Mixed-Domain (FMD) prestack depth migration and can be regarded as a stable explicit algorithm. The FMD technique was tested using the 3D SEG/EAGE salt model and the 2D anisotropic Hess model with good results. Finally, FMD was applied with success to a 3D field data set from the Barents Sea including anisotropy. : Accepted article in Journal of Applied Geophysics |
format |
Article in Journal/Newspaper |
author |
Zhao, Hao Gelius, Leiv J. Tygel, Martin Nilsen, Espen Harris Evensen, Andreas Kjelsrud |
author_facet |
Zhao, Hao Gelius, Leiv J. Tygel, Martin Nilsen, Espen Harris Evensen, Andreas Kjelsrud |
author_sort |
Zhao, Hao |
title |
3D Prestack Fourier Mixed-Domain (FMD) depth migration for VTI media with large lateral contrasts |
title_short |
3D Prestack Fourier Mixed-Domain (FMD) depth migration for VTI media with large lateral contrasts |
title_full |
3D Prestack Fourier Mixed-Domain (FMD) depth migration for VTI media with large lateral contrasts |
title_fullStr |
3D Prestack Fourier Mixed-Domain (FMD) depth migration for VTI media with large lateral contrasts |
title_full_unstemmed |
3D Prestack Fourier Mixed-Domain (FMD) depth migration for VTI media with large lateral contrasts |
title_sort |
3d prestack fourier mixed-domain (fmd) depth migration for vti media with large lateral contrasts |
publisher |
arXiv |
publishDate |
2019 |
url |
https://dx.doi.org/10.48550/arxiv.1906.07474 https://arxiv.org/abs/1906.07474 |
long_lat |
ENVELOPE(-65.133,-65.133,-67.200,-67.200) |
geographic |
Barents Sea Hess |
geographic_facet |
Barents Sea Hess |
genre |
Barents Sea |
genre_facet |
Barents Sea |
op_relation |
https://dx.doi.org/10.1016/j.jappgeo.2019.06.009 |
op_rights |
Creative Commons Attribution Non Commercial Share Alike 4.0 International https://creativecommons.org/licenses/by-nc-sa/4.0/legalcode cc-by-nc-sa-4.0 |
op_rightsnorm |
CC-BY-NC-SA |
op_doi |
https://doi.org/10.48550/arxiv.1906.07474 https://doi.org/10.1016/j.jappgeo.2019.06.009 |
_version_ |
1766370470005833728 |