Multiples least-squares reverse time migration

Handle URI:
http://hdl.handle.net/10754/564653
Title:
Multiples least-squares reverse time migration
Authors:
Zhang, Dongliang; Zhan, Ge; Dai, Wei; Schuster, Gerard T. ( 0000-0001-7532-1587 )
Abstract:
To enhance the image quality, we propose multiples least-squares reverse time migration (MLSRTM) that transforms each hydrophone into a virtual point source with a time history equal to that of the recorded data. Since each recorded trace is treated as a virtual source, knowledge of the source wavelet is not required. Numerical tests on synthetic data for the Sigsbee2B model and field data from Gulf of Mexico show that MLSRTM can improve the image quality by removing artifacts, balancing amplitudes, and suppressing crosstalk compared to standard migration of the free-surface multiples. The potential liability of this method is that multiples require several roundtrips between the reflector and the free surface, so that high frequencies in the multiples are attenuated compared to the primary reflections. This can lead to lower resolution in the migration image compared to that computed from primaries.
KAUST Department:
Earth Science and Engineering Program; Earth Sciences and Engineering Program; Physical Sciences and Engineering (PSE) Division; Environmental Science and Engineering Program
Publisher:
EAGE Publications
Journal:
London 2013, 75th eage conference en exhibition incorporating SPE Europec
Conference/Event name:
75th European Association of Geoscientists and Engineers Conference and Exhibition 2013 Incorporating SPE EUROPEC 2013: Changing Frontiers
Issue Date:
2013
DOI:
10.3997/2214-4609.20130476
Type:
Conference Paper
ISBN:
9781629937915
Appears in Collections:
Conference Papers; Environmental Science and Engineering Program; Physical Sciences and Engineering (PSE) Division; Earth Science and Engineering Program

Full metadata record

DC FieldValue Language
dc.contributor.authorZhang, Dongliangen
dc.contributor.authorZhan, Geen
dc.contributor.authorDai, Weien
dc.contributor.authorSchuster, Gerard T.en
dc.date.accessioned2015-08-04T07:11:02Zen
dc.date.available2015-08-04T07:11:02Zen
dc.date.issued2013en
dc.identifier.isbn9781629937915en
dc.identifier.doi10.3997/2214-4609.20130476en
dc.identifier.urihttp://hdl.handle.net/10754/564653en
dc.description.abstractTo enhance the image quality, we propose multiples least-squares reverse time migration (MLSRTM) that transforms each hydrophone into a virtual point source with a time history equal to that of the recorded data. Since each recorded trace is treated as a virtual source, knowledge of the source wavelet is not required. Numerical tests on synthetic data for the Sigsbee2B model and field data from Gulf of Mexico show that MLSRTM can improve the image quality by removing artifacts, balancing amplitudes, and suppressing crosstalk compared to standard migration of the free-surface multiples. The potential liability of this method is that multiples require several roundtrips between the reflector and the free surface, so that high frequencies in the multiples are attenuated compared to the primary reflections. This can lead to lower resolution in the migration image compared to that computed from primaries.en
dc.publisherEAGE Publicationsen
dc.titleMultiples least-squares reverse time migrationen
dc.typeConference Paperen
dc.contributor.departmentEarth Science and Engineering Programen
dc.contributor.departmentEarth Sciences and Engineering Programen
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.contributor.departmentEnvironmental Science and Engineering Programen
dc.identifier.journalLondon 2013, 75th eage conference en exhibition incorporating SPE Europecen
dc.conference.date10 June 2013 through 13 June 2013en
dc.conference.name75th European Association of Geoscientists and Engineers Conference and Exhibition 2013 Incorporating SPE EUROPEC 2013: Changing Frontiersen
kaust.authorZhan, Geen
kaust.authorDai, Weien
kaust.authorSchuster, Gerard T.en
kaust.authorZhang, Dongliangen
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