Prestack exploding reflector modelling and migration for anisotropic media

Handle URI:
http://hdl.handle.net/10754/563794
Title:
Prestack exploding reflector modelling and migration for anisotropic media
Authors:
Alkhalifah, Tariq Ali ( 0000-0002-9363-9799 )
Abstract:
The double-square-root equation is commonly used to image data by downward continuation using one-way depth extrapolation methods. A two-way time extrapolation of the double-square-root-derived phase operator allows for up and downgoing wavefields but suffers from an essential singularity for horizontally travelling waves. This singularity is also associated with an anisotropic version of the double-square-root extrapolator. Perturbation theory allows us to separate the isotropic contribution, as well as the singularity, from the anisotropic contribution to the operator. As a result, the anisotropic residual operator is free from such singularities and can be applied as a stand alone operator to correct for anisotropy. We can apply the residual anisotropy operator even if the original prestack wavefield was obtained using, for example, reverse-time migration. The residual correction is also useful for anisotropic parameter estimation. Applications to synthetic data demonstrate the accuracy of the new prestack modelling and migration approach. It also proves useful in approximately imaging the Vertical Transverse Isotropic Marmousi model.
KAUST Department:
Physical Sciences and Engineering (PSE) Division; Earth Science and Engineering Program; Environmental Science and Engineering Program
Publisher:
Wiley-Blackwell
Journal:
Geophysical Prospecting
Issue Date:
9-Oct-2014
DOI:
10.1111/1365-2478.12148
Type:
Article
ISSN:
00168025
Sponsors:
I thank Alexey Stovas, Anton Duchkov and Pavel Golikov for many stimulating discussions on the subject of DSR. I thank KAUST and specifically the AEA round 3 project for its support. I also thank the associate editor and two reviewers for their fruitful and critical review of the manuscript.
Appears in Collections:
Articles; Environmental Science and Engineering Program; Physical Sciences and Engineering (PSE) Division; Earth Science and Engineering Program

Full metadata record

DC FieldValue Language
dc.contributor.authorAlkhalifah, Tariq Alien
dc.date.accessioned2015-08-03T12:10:21Zen
dc.date.available2015-08-03T12:10:21Zen
dc.date.issued2014-10-09en
dc.identifier.issn00168025en
dc.identifier.doi10.1111/1365-2478.12148en
dc.identifier.urihttp://hdl.handle.net/10754/563794en
dc.description.abstractThe double-square-root equation is commonly used to image data by downward continuation using one-way depth extrapolation methods. A two-way time extrapolation of the double-square-root-derived phase operator allows for up and downgoing wavefields but suffers from an essential singularity for horizontally travelling waves. This singularity is also associated with an anisotropic version of the double-square-root extrapolator. Perturbation theory allows us to separate the isotropic contribution, as well as the singularity, from the anisotropic contribution to the operator. As a result, the anisotropic residual operator is free from such singularities and can be applied as a stand alone operator to correct for anisotropy. We can apply the residual anisotropy operator even if the original prestack wavefield was obtained using, for example, reverse-time migration. The residual correction is also useful for anisotropic parameter estimation. Applications to synthetic data demonstrate the accuracy of the new prestack modelling and migration approach. It also proves useful in approximately imaging the Vertical Transverse Isotropic Marmousi model.en
dc.description.sponsorshipI thank Alexey Stovas, Anton Duchkov and Pavel Golikov for many stimulating discussions on the subject of DSR. I thank KAUST and specifically the AEA round 3 project for its support. I also thank the associate editor and two reviewers for their fruitful and critical review of the manuscript.en
dc.publisherWiley-Blackwellen
dc.subjectAnisotropicen
dc.subjectMigrationen
dc.subjectPrestacken
dc.titlePrestack exploding reflector modelling and migration for anisotropic mediaen
dc.typeArticleen
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.contributor.departmentEarth Science and Engineering Programen
dc.contributor.departmentEnvironmental Science and Engineering Programen
dc.identifier.journalGeophysical Prospectingen
kaust.authorAlkhalifah, Tariq Alien
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