3D Multi‐source Least‐squares Reverse Time Migration

Handle URI:
http://hdl.handle.net/10754/594720
Title:
3D Multi‐source Least‐squares Reverse Time Migration
Authors:
Dai, Wei; Boonyasiriwat, Chaiwoot; Schuster, Gerard T. ( 0000-0001-7532-1587 )
Abstract:
We present the theory and numerical results for least‐squares reverse time migration (LSRTM) of phase‐encoded supergathers, where each supergather is the superposition of phased‐encoded shots. Three type of encoding functions are used in this study: random time shift, random source polarity and random source location selected from a pre‐designed table. Numerical tests for the 3D SEG/EAGE Overthrust model show that multi‐source LSRTM can suppress migration artifacts in the migration image and remove most of the crosstalk noise from multi‐source data. Empirical results suggest that multi‐source LSRTM can provide a noticeable increase in computational efficiency compared to standard RTM, when the CSGs in a supergather are modeled and migrated together with a finite‐difference simulator. If the phase‐encoding functions are dynamically changed after each iteration of LSRTM, the best images are obtained. The potential drawback is that the final results are very sensitive to the accuracy of the starting model.
KAUST Department:
Earth Science and Engineering Program; Physical Sciences and Engineering (PSE) Division
Publisher:
Society of Exploration Geophysicists
Journal:
SEG Technical Program Expanded Abstracts 2010
Conference/Event name:
SEG Technical Program Expanded Abstracts 2010
Issue Date:
17-Oct-2010
DOI:
10.1190/1.3513494
Type:
Conference Paper
Additional Links:
http://library.seg.org/doi/abs/10.1190/1.3513494
Appears in Collections:
Conference Papers; Physical Sciences and Engineering (PSE) Division; Earth Science and Engineering Program

Full metadata record

DC FieldValue Language
dc.contributor.authorDai, Weien
dc.contributor.authorBoonyasiriwat, Chaiwooten
dc.contributor.authorSchuster, Gerard T.en
dc.date.accessioned2016-01-24T07:38:31Zen
dc.date.available2016-01-24T07:38:31Zen
dc.date.issued2010-10-17en
dc.identifier.doi10.1190/1.3513494en
dc.identifier.urihttp://hdl.handle.net/10754/594720en
dc.description.abstractWe present the theory and numerical results for least‐squares reverse time migration (LSRTM) of phase‐encoded supergathers, where each supergather is the superposition of phased‐encoded shots. Three type of encoding functions are used in this study: random time shift, random source polarity and random source location selected from a pre‐designed table. Numerical tests for the 3D SEG/EAGE Overthrust model show that multi‐source LSRTM can suppress migration artifacts in the migration image and remove most of the crosstalk noise from multi‐source data. Empirical results suggest that multi‐source LSRTM can provide a noticeable increase in computational efficiency compared to standard RTM, when the CSGs in a supergather are modeled and migrated together with a finite‐difference simulator. If the phase‐encoding functions are dynamically changed after each iteration of LSRTM, the best images are obtained. The potential drawback is that the final results are very sensitive to the accuracy of the starting model.en
dc.publisherSociety of Exploration Geophysicistsen
dc.relation.urlhttp://library.seg.org/doi/abs/10.1190/1.3513494en
dc.subject3Den
dc.subjectinversionen
dc.subjectleast squaresen
dc.subjectmigrationen
dc.title3D Multi‐source Least‐squares Reverse Time Migrationen
dc.typeConference Paperen
dc.contributor.departmentEarth Science and Engineering Programen
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.identifier.journalSEG Technical Program Expanded Abstracts 2010en
dc.conference.date17-22 October, 2010en
dc.conference.nameSEG Technical Program Expanded Abstracts 2010en
dc.conference.locationDenver, COen
dc.eprint.versionPublisher's Version/PDFen
kaust.authorDai, Weien
kaust.authorBoonyasiriwat, Chaiwooten
kaust.authorSchuster, Gerard T.en
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