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dc.contributor.authorOh, Juwon
dc.contributor.authorAlkhalifah, Tariq Ali
dc.date.accessioned2019-05-21T12:58:07Z
dc.date.available2019-05-21T12:58:07Z
dc.date.issued2019-03-05
dc.identifier.citationOh J, Alkhalifah T (2019) Study on the full-waveform inversion strategy for 3D elastic orthorhombic anisotropic media: application to ocean bottom cable data. Geophysical Prospecting 67: 1219–1242. Available: http://dx.doi.org/10.1111/1365-2478.12768.
dc.identifier.issn0016-8025
dc.identifier.doi10.1111/1365-2478.12768
dc.identifier.urihttp://hdl.handle.net/10754/652963
dc.description.abstractThe multi-parameter full waveform inversion is an essential tool to estimate subsurface anisotropic properties in a reservoir that may have complex geological behaviour requiring an elastic orthorhombic medium description. For such elastic orthorhombic media, finding a proper inversion strategy to mitigate parameter trade-off and reduce the Null space is crucial considering the large number of parameters describing the medium. We apply our recently developed strategy for orthorhombic medium inversion on synthetic and real ocean bottom cable data, and find the most efficient inversion strategy. At first, we analyse the trade-off patterns in three elastic orthorhombic parameterizations for a hockey-puck-shaped model. We, then, compare the performance of these orthorhombic parameterizations on a 3D synthetic ocean bottom cable data, which are obtained from a channel-shaped model. By interpreting the inverted models based on analytic radiation patterns of the nine elastic orthorhombic parameters in each parameterization, we observe that parameterizations, which have one P-wave velocity, one S-wave velocity and seven dimensionless parameters, can be optimal to recover subsurface isotropic properties in the early stages of inversion. Then, we show that the choice of three anisotropic parameters and their deviations along the horizontal plane helps us mitigate the complexity of the multi-parameter inversion by decoupling anisotropic features, which have vertical and horizontal symmetric axes, respectively. This decoupling of isotropic and anisotropic properties enables us to perform the multi-parameter anisotropic inversion in a multi-stage manner. In addition, for the marine acquisition, we show that the number of parameters can be reduced from 9 to 4, which makes the multi-parameter inversion more practical. Finally, we apply the elastic orthorhombic inversion to real ocean bottom cable data.
dc.description.sponsorshipResearch reported in this publication was supported by competitive research funding from the King Abdullah University of Science and Technology (KAUST) in Thuwal, Saudi Arabia. This research was also supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Science and ICT (NRF-2017R1C1B5077123). The authors would like to thank Statoil ASA and the Volve licence partners ExxonMobil E&P Norway and Bayerngas Norge AS, for the release of the Volve data. We would like to thank Marianne Houbiers from Statoil for providing some helpful suggestions and corrections. For computer time, this research used the resources of the Supercomputing Laboratory in KAUST. We thank the members of Seismic Wave Analysis Group (SWAG) in KAUST, particularly Nabil Masmoudi, for the helpful discussions. We would also like to thank Tijmen Jan Moser (Editor), Partha Routh (Associate Editor) and two anonymous reviewers for their helpful suggestions.
dc.publisherWiley
dc.relation.urlhttps://onlinelibrary.wiley.com/doi/full/10.1111/1365-2478.12768
dc.subject3D problem
dc.subjectAnisotropic parameter
dc.subjectFull-waveform inversion
dc.titleStudy on the full-waveform inversion strategy for 3D elastic orthorhombic anisotropic media: application to ocean bottom cable data
dc.typeArticle
dc.contributor.departmentEarth Science and Engineering Program
dc.contributor.departmentPhysical Science and Engineering (PSE) Division
dc.contributor.departmentSeismic Wave Analysis Group
dc.identifier.journalGeophysical Prospecting
dc.contributor.institutionDepartment of Resources and Energy Engineering; Chonbuk National University; 567, Baekje-daero, Deokjin-gu, Jeonju-si, Jeollabuk-do 54896 Republic of Korea
kaust.personOh, Juwon
kaust.personAlkhalifah, Tariq Ali
dc.date.published-online2019-03-05
dc.date.published-print2019-06


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