Generalized diffraction-stack migration and filtering of coherent noise

Handle URI:
http://hdl.handle.net/10754/563355
Title:
Generalized diffraction-stack migration and filtering of coherent noise
Authors:
Zhan, Ge; Dai, Wei; Zhou, Min; Luo, Yi; Schuster, Gerard T. ( 0000-0001-7532-1587 )
Abstract:
We reformulate the equation of reverse-time migration so that it can be interpreted as summing data along a series of hyperbola-like curves, each one representing a different type of event such as a reflection or multiple. This is a generalization of the familiar diffraction-stack migration algorithm where the migration image at a point is computed by the sum of trace amplitudes along an appropriate hyperbola-like curve. Instead of summing along the curve associated with the primary reflection, the sum is over all scattering events and so this method is named generalized diffraction-stack migration. This formulation leads to filters that can be applied to the generalized diffraction-stack migration operator to mitigate coherent migration artefacts due to, e.g., crosstalk and aliasing. Results with both synthetic and field data show that generalized diffraction-stack migration images have fewer artefacts than those computed by the standard reverse-time migration algorithm. The main drawback is that generalized diffraction-stack migration is much more memory intensive and I/O limited than the standard reverse-time migration method. © 2014 European Association of Geoscientists & Engineers.
KAUST Department:
Earth Science and Engineering Program; Earth Sciences and Engineering Program; Physical Sciences and Engineering (PSE) Division; Environmental Science and Engineering Program
Publisher:
Wiley-Blackwell
Journal:
Geophysical Prospecting
Issue Date:
27-Jan-2014
DOI:
10.1111/1365-2478.12086
Type:
Article
ISSN:
00168025
Sponsors:
We thank the Supercomputing Laboratory at the King Abdullah University of Science and Technology (KAUST) in Thuwal, Saudi Arabia for the computer cycles provided to this project. We appreciate the reviews by the associate editor Ian Jones and the anonymous reviewers, who made a number of helpful suggestions that improved the quality of our manuscript. We would also like to thank WesternGeco for providing the field data. We acknowledge the support of the Center of Subsurface Imaging and Fluid Modelling (CSIM) sponsors (http://csim.kaust.edu.sa/).
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.authorZhan, Geen
dc.contributor.authorDai, Weien
dc.contributor.authorZhou, Minen
dc.contributor.authorLuo, Yien
dc.contributor.authorSchuster, Gerard T.en
dc.date.accessioned2015-08-03T11:46:32Zen
dc.date.available2015-08-03T11:46:32Zen
dc.date.issued2014-01-27en
dc.identifier.issn00168025en
dc.identifier.doi10.1111/1365-2478.12086en
dc.identifier.urihttp://hdl.handle.net/10754/563355en
dc.description.abstractWe reformulate the equation of reverse-time migration so that it can be interpreted as summing data along a series of hyperbola-like curves, each one representing a different type of event such as a reflection or multiple. This is a generalization of the familiar diffraction-stack migration algorithm where the migration image at a point is computed by the sum of trace amplitudes along an appropriate hyperbola-like curve. Instead of summing along the curve associated with the primary reflection, the sum is over all scattering events and so this method is named generalized diffraction-stack migration. This formulation leads to filters that can be applied to the generalized diffraction-stack migration operator to mitigate coherent migration artefacts due to, e.g., crosstalk and aliasing. Results with both synthetic and field data show that generalized diffraction-stack migration images have fewer artefacts than those computed by the standard reverse-time migration algorithm. The main drawback is that generalized diffraction-stack migration is much more memory intensive and I/O limited than the standard reverse-time migration method. © 2014 European Association of Geoscientists & Engineers.en
dc.description.sponsorshipWe thank the Supercomputing Laboratory at the King Abdullah University of Science and Technology (KAUST) in Thuwal, Saudi Arabia for the computer cycles provided to this project. We appreciate the reviews by the associate editor Ian Jones and the anonymous reviewers, who made a number of helpful suggestions that improved the quality of our manuscript. We would also like to thank WesternGeco for providing the field data. We acknowledge the support of the Center of Subsurface Imaging and Fluid Modelling (CSIM) sponsors (http://csim.kaust.edu.sa/).en
dc.publisherWiley-Blackwellen
dc.subjectMigration operator filteringen
dc.subjectReverse-time migration (RTM) antialiasingen
dc.subjectReverse-time migration (RTM) artefactsen
dc.titleGeneralized diffraction-stack migration and filtering of coherent noiseen
dc.typeArticleen
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.journalGeophysical Prospectingen
dc.contributor.institutionBP America, Houston, TX, United Statesen
dc.contributor.institutionSaudi Aramco, Dhahran, Saudi Arabiaen
kaust.authorZhan, Geen
kaust.authorDai, Weien
kaust.authorSchuster, Gerard T.en
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