Waveform inversion of lateral velocity variation from wavefield source location perturbation

Handle URI:
http://hdl.handle.net/10754/593696
Title:
Waveform inversion of lateral velocity variation from wavefield source location perturbation
Authors:
Choi, Yun Seok; Alkhalifah, Tariq Ali ( 0000-0002-9363-9799 )
Abstract:
It is challenge in waveform inversion to precisely define the deep part of the velocity model compared to the shallow part. The lateral velocity variation, or what referred to as the derivative of velocity with respect to the horizontal distance, with well log data can be used to update the deep part of the velocity model more precisely. We develop a waveform inversion algorithm to obtain the lateral velocity variation by inverting the wavefield variation associated with the lateral shot location perturbation. The gradient of the new waveform inversion algorithm is obtained by the adjoint-state method. Our inversion algorithm focuses on resolving the lateral changes of the velocity model with respect to a fixed reference vertical velocity profile given by a well log. We apply the method on a simple-dome model to highlight the methods potential.
KAUST Department:
Earth Science and Engineering Program
Publisher:
Society of Exploration Geophysicists
Journal:
SEG Technical Program Expanded Abstracts 2013
Conference/Event name:
SEG Technical Program Expanded Abstracts 2013
Issue Date:
22-Sep-2013
DOI:
10.1190/segam2013-0494.1
Type:
Conference Paper
Additional Links:
http://library.seg.org/doi/abs/10.1190/segam2013-0494.1
Appears in Collections:
Conference Papers; Earth Science and Engineering Program

Full metadata record

DC FieldValue Language
dc.contributor.authorChoi, Yun Seoken
dc.contributor.authorAlkhalifah, Tariq Alien
dc.date.accessioned2016-01-18T08:25:23Zen
dc.date.available2016-01-18T08:25:23Zen
dc.date.issued2013-09-22en
dc.identifier.doi10.1190/segam2013-0494.1en
dc.identifier.urihttp://hdl.handle.net/10754/593696en
dc.description.abstractIt is challenge in waveform inversion to precisely define the deep part of the velocity model compared to the shallow part. The lateral velocity variation, or what referred to as the derivative of velocity with respect to the horizontal distance, with well log data can be used to update the deep part of the velocity model more precisely. We develop a waveform inversion algorithm to obtain the lateral velocity variation by inverting the wavefield variation associated with the lateral shot location perturbation. The gradient of the new waveform inversion algorithm is obtained by the adjoint-state method. Our inversion algorithm focuses on resolving the lateral changes of the velocity model with respect to a fixed reference vertical velocity profile given by a well log. We apply the method on a simple-dome model to highlight the methods potential.en
dc.publisherSociety of Exploration Geophysicistsen
dc.relation.urlhttp://library.seg.org/doi/abs/10.1190/segam2013-0494.1en
dc.subjectreflectionen
dc.subjectsourcesen
dc.subjectwave equationen
dc.subjectunconventionalen
dc.subjectfull-waveform inversionen
dc.titleWaveform inversion of lateral velocity variation from wavefield source location perturbationen
dc.typeConference Paperen
dc.contributor.departmentEarth Science and Engineering Programen
dc.identifier.journalSEG Technical Program Expanded Abstracts 2013en
dc.conference.date22-27 September 2013en
dc.conference.nameSEG Technical Program Expanded Abstracts 2013en
dc.conference.locationHouston, Texas, USAen
dc.eprint.versionPublisher's Version/PDFen
kaust.authorChoi, Yun Seoken
kaust.authorAlkhalifah, Tariq Alien
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