The possibilities of least-squares migration of internally scattered seismic energy

Handle URI:
http://hdl.handle.net/10754/556170
Title:
The possibilities of least-squares migration of internally scattered seismic energy
Authors:
Aldawood, Ali ( 0000-0002-9535-0825 ) ; Hoteit, Ibrahim ( 0000-0002-3751-4393 ) ; Zuberi, Mohammad; Turkiyyah, George; Alkhalifah, Tariq Ali ( 0000-0002-9363-9799 )
Abstract:
Approximate images of the earth’s subsurface structures are usually obtained by migrating surface seismic data. Least-squares migration, under the single-scattering assumption, is used as an iterative linearized inversion scheme to suppress migration artifacts, deconvolve the source signature, mitigate the acquisition fingerprint, and enhance the spatial resolution of migrated images. The problem with least-squares migration of primaries, however, is that it may not be able to enhance events that are mainly illuminated by internal multiples, such as vertical and nearly vertical faults or salt flanks. To alleviate this problem, we adopted a linearized inversion framework to migrate internally scattered energy. We apply the least-squares migration of first-order internal multiples to image subsurface vertical fault planes. Tests on synthetic data demonstrated the ability of the proposed method to resolve vertical fault planes, which are poorly illuminated by the least-squares migration of primaries only. The proposed scheme is robust in the presence of white Gaussian observational noise and in the case of imaging the fault planes using inaccurate migration velocities. Our results suggested that the proposed least-squares imaging, under the double-scattering assumption, still retrieved the vertical fault planes when imaging the scattered data despite a slight defocusing of these events due to the presence of noise or velocity errors.
KAUST Department:
Physical Sciences and Engineering (PSE) Division
Citation:
The possibilities of least-squares migration of internally scattered seismic energy 2015, 80 (4):S93 GEOPHYSICS
Publisher:
Society of Exploration Geophysicists
Journal:
GEOPHYSICS
Issue Date:
26-May-2015
DOI:
10.1190/geo2014-0436.1
Type:
Article
ISSN:
0016-8033; 1942-2156
Additional Links:
http://library.seg.org/doi/abs/10.1190/geo2014-0436.1
Appears in Collections:
Articles; Physical Sciences and Engineering (PSE) Division

Full metadata record

DC FieldValue Language
dc.contributor.authorAldawood, Alien
dc.contributor.authorHoteit, Ibrahimen
dc.contributor.authorZuberi, Mohammaden
dc.contributor.authorTurkiyyah, Georgeen
dc.contributor.authorAlkhalifah, Tariq Alien
dc.date.accessioned2015-06-02T14:26:43Zen
dc.date.available2015-06-02T14:26:43Zen
dc.date.issued2015-05-26en
dc.identifier.citationThe possibilities of least-squares migration of internally scattered seismic energy 2015, 80 (4):S93 GEOPHYSICSen
dc.identifier.issn0016-8033en
dc.identifier.issn1942-2156en
dc.identifier.doi10.1190/geo2014-0436.1en
dc.identifier.urihttp://hdl.handle.net/10754/556170en
dc.description.abstractApproximate images of the earth’s subsurface structures are usually obtained by migrating surface seismic data. Least-squares migration, under the single-scattering assumption, is used as an iterative linearized inversion scheme to suppress migration artifacts, deconvolve the source signature, mitigate the acquisition fingerprint, and enhance the spatial resolution of migrated images. The problem with least-squares migration of primaries, however, is that it may not be able to enhance events that are mainly illuminated by internal multiples, such as vertical and nearly vertical faults or salt flanks. To alleviate this problem, we adopted a linearized inversion framework to migrate internally scattered energy. We apply the least-squares migration of first-order internal multiples to image subsurface vertical fault planes. Tests on synthetic data demonstrated the ability of the proposed method to resolve vertical fault planes, which are poorly illuminated by the least-squares migration of primaries only. The proposed scheme is robust in the presence of white Gaussian observational noise and in the case of imaging the fault planes using inaccurate migration velocities. Our results suggested that the proposed least-squares imaging, under the double-scattering assumption, still retrieved the vertical fault planes when imaging the scattered data despite a slight defocusing of these events due to the presence of noise or velocity errors.en
dc.publisherSociety of Exploration Geophysicistsen
dc.relation.urlhttp://library.seg.org/doi/abs/10.1190/geo2014-0436.1en
dc.rightsArchived with thanks to GEOPHYSICSen
dc.subjectmultiplesen
dc.subjectimagingen
dc.subjectleast squaresen
dc.subjectmigrationen
dc.subjectscatteringen
dc.titleThe possibilities of least-squares migration of internally scattered seismic energyen
dc.typeArticleen
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.identifier.journalGEOPHYSICSen
dc.eprint.versionPublisher's Version/PDFen
dc.contributor.institutionAmerican University of Beirut, Department of Computer Science, Beirut, Lebanonen
kaust.authorAldawood, Alien
kaust.authorHoteit, Ibrahimen
kaust.authorAlkhalifah, Tariq Alien
kaust.authorZuberi, Mohammaden
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