Application of the unwrapped phase inversion to land data without source estimation

Handle URI:
http://hdl.handle.net/10754/593186
Title:
Application of the unwrapped phase inversion to land data without source estimation
Authors:
Choi, Yun Seok; Alkhalifah, Tariq Ali ( 0000-0002-9363-9799 ) ; DeVault, Bryan
Abstract:
Unwrapped phase inversion with a strong damping was developed to solve the phase wrapping problem in frequency-domain waveform inversion. In this study, we apply the unwrapped phase inversion to band-limited real land data, for which the available minimum frequency is quite high. An important issue of the data is a strong ambiguity of source-ignition time (or source shift) shown in a seismogram. A source-estimation approach does not fully address the issue of source shift, since the velocity model and the source wavelet are updated simultaneously and interact with each other. We suggest a source-independent unwrapped phase inversion approach instead of relying on source-estimation from this land data. In the source-independent approach, the phase of the modeled data converges not to the exact phase value of the observed data, but to the relative phase value (or the trend of phases); thus it has the potential to solve the ambiguity of source-ignition time in a seismogram and work better than the source-estimation approach. Numerical examples show the validation of the source-independent unwrapped phase inversion, especially for land field data having an ambiguity in the source-ignition time.
KAUST Department:
Physical Sciences and Engineering (PSE) Division
Citation:
Yunseok Choi*, Tariq Alkhalifah, and Bryan DeVault (2015) Application of the unwrapped phase inversion to land data without source estimation. SEG Technical Program Expanded Abstracts 2015: pp. 1225-1229. doi: 10.1190/segam2015-5873514.1
Publisher:
Society of Exploration Geophysicists
Journal:
SEG Technical Program Expanded Abstracts 2015
Issue Date:
19-Aug-2015
DOI:
10.1190/segam2015-5873514.1
Type:
Article
Additional Links:
http://library.seg.org/doi/10.1190/segam2015-5873514.1
Appears in Collections:
Articles; Physical Sciences and Engineering (PSE) Division

Full metadata record

DC FieldValue Language
dc.contributor.authorChoi, Yun Seoken
dc.contributor.authorAlkhalifah, Tariq Alien
dc.contributor.authorDeVault, Bryanen
dc.date.accessioned2016-01-10T10:38:19Zen
dc.date.available2016-01-10T10:38:19Zen
dc.date.issued2015-08-19en
dc.identifier.citationYunseok Choi*, Tariq Alkhalifah, and Bryan DeVault (2015) Application of the unwrapped phase inversion to land data without source estimation. SEG Technical Program Expanded Abstracts 2015: pp. 1225-1229. doi: 10.1190/segam2015-5873514.1en
dc.identifier.doi10.1190/segam2015-5873514.1en
dc.identifier.urihttp://hdl.handle.net/10754/593186en
dc.description.abstractUnwrapped phase inversion with a strong damping was developed to solve the phase wrapping problem in frequency-domain waveform inversion. In this study, we apply the unwrapped phase inversion to band-limited real land data, for which the available minimum frequency is quite high. An important issue of the data is a strong ambiguity of source-ignition time (or source shift) shown in a seismogram. A source-estimation approach does not fully address the issue of source shift, since the velocity model and the source wavelet are updated simultaneously and interact with each other. We suggest a source-independent unwrapped phase inversion approach instead of relying on source-estimation from this land data. In the source-independent approach, the phase of the modeled data converges not to the exact phase value of the observed data, but to the relative phase value (or the trend of phases); thus it has the potential to solve the ambiguity of source-ignition time in a seismogram and work better than the source-estimation approach. Numerical examples show the validation of the source-independent unwrapped phase inversion, especially for land field data having an ambiguity in the source-ignition time.en
dc.language.isoenen
dc.publisherSociety of Exploration Geophysicistsen
dc.relation.urlhttp://library.seg.org/doi/10.1190/segam2015-5873514.1en
dc.rightsArchived with thanks to SEG Technical Program Expanded Abstracts 2015en
dc.subjectfrequency-domainen
dc.subjectinversionen
dc.subjectphaseen
dc.subjectsourcesen
dc.subjectlanden
dc.titleApplication of the unwrapped phase inversion to land data without source estimationen
dc.typeArticleen
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.identifier.journalSEG Technical Program Expanded Abstracts 2015en
dc.eprint.versionPublisher's Version/PDFen
dc.contributor.institutionVecta Oil and Gas Ltd.en
dc.contributor.affiliationKing Abdullah University of Science and Technology (KAUST)en
kaust.authorChoi, Yun Seoken
kaust.authorAlkhalifah, Tariq Alien
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