Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/339791
Full metadata record
DC FieldValueLanguage
dc.contributor.CRUESPUNIVERSIDADE ESTADUAL DE CAMPINASpt_BR
dc.contributor.authorunicampGelius, Leiv Jacob-
dc.typeArtigopt_BR
dc.titleFast estimation of prestack common reflection surface parameterspt_BR
dc.contributor.authorWaldeland, Anders U.-
dc.contributor.authorCoimbra, Tiago A.-
dc.contributor.authorFaccipieri, Jorge H.-
dc.contributor.authorSolberg, Anne H. Schistad-
dc.contributor.authorGelius, Leiv-J.-
dc.subjectEstimativa de parâmetropt_BR
dc.subject.otherlanguageParameter estimationpt_BR
dc.description.abstractWe present a method for fast estimation of finite offset common reflection surface parameters. Firstly, the derivatives with respect to offset are derived from the velocity guide. Secondly, we apply structure tensors to extract the derivatives with respect to midpoint from stacked common offset sections. Finally, the mixed derivative is estimated using a one‐parametric semblance search. The proposed method is compared to the global five‐parametric semblance search and the pragmatic sequential two‐parametric semblance search on one synthetic and one real data set. The experiments show that the proposed method is more robust against noise than the pragmatic search and have comparable robustness with the global search. The proposed method smoothes parameter estimates in a local window, and the window size is set to give the best trade‐off between detail and robustness. Since the proposed method is dependent on a velocity guide, the quality of the other parameter estimates may be influenced by any inaccuracies in the guide. The main advantage of the proposed method is the computational efficiency. When compared with a gridded implementation of the semblance search, the proposed method is 10 and 400 times faster than the pragmatic and global search. Alternative search strategies significantly reduce the computational cost of the global search. However, since more than 99% of the computational cost of the proposed method comes from the semblance search to estimate the mixed derivative, it is expected that such techniques also reduce the computational cost for the proposed methodpt_BR
dc.relation.ispartofGeophysical prospectingpt_BR
dc.publisher.cityChichesterpt_BR
dc.publisher.countryReino Unidopt_BR
dc.publisherWileypt_BR
dc.date.issued2019-06-
dc.date.monthofcirculationJunept_BR
dc.language.isoengpt_BR
dc.description.volume67pt_BR
dc.description.issuenumber5pt_BR
dc.description.firstpage1163pt_BR
dc.description.lastpage1183pt_BR
dc.rightsFechadopt_BR
dc.sourceWOSpt_BR
dc.identifier.issn0016-8025pt_BR
dc.identifier.eissn1365-2478pt_BR
dc.identifier.doi10.1111/1365-2478.12740pt_BR
dc.identifier.doi10.1111/1365-2478.12925pt_BR
dc.identifier.urlhttps://onlinelibrary.wiley.com/doi/full/10.1111/1365-2478.12740pt_BR
dc.identifier.urlhttps://onlinelibrary.wiley.com/doi/full/10.1111/1365-2478.12925pt_BR
dc.date.available2020-04-28T18:01:38Z-
dc.date.accessioned2020-04-28T18:01:38Z-
dc.description.provenanceSubmitted by Susilene Barbosa da Silva (susilene@unicamp.br) on 2020-04-28T18:01:38Z No. of bitstreams: 0. Added 1 bitstream(s) on 2020-07-30T19:32:05Z : No. of bitstreams: 1 000473086500003.pdf: 23237901 bytes, checksum: cfe996c52f536b6931769819b84a31d2 (MD5). Added 1 bitstream(s) on 2020-08-27T19:17:39Z : No. of bitstreams: 2 000473086500003.pdf: 23237901 bytes, checksum: cfe996c52f536b6931769819b84a31d2 (MD5) 000507806200023.pdf: 377290 bytes, checksum: 01167b810e6c0a5508329bd8e3d6c8f5 (MD5)en
dc.description.provenanceMade available in DSpace on 2020-04-28T18:01:38Z (GMT). No. of bitstreams: 0 Previous issue date: 2019-06en
dc.identifier.urihttp://repositorio.unicamp.br/jspui/handle/REPOSIP/339791-
dc.contributor.departmentSem informaçãopt_BR
dc.contributor.unidadeCentro de Estudos de Petróleopt_BR
dc.subject.keywordStackingpt_BR
dc.subject.keywordMoveout velocitypt_BR
dc.subject.keywordCRS imagingpt_BR
dc.subject.keywordSignal processingpt_BR
dc.identifier.source000473086500003pt_BR
dc.identifier.source000507806200023pt_BR
dc.creator.orcidSem informaçãopt_BR
dc.type.formArtigopt_BR
dc.description.sponsorNoteThe work was funded by the Norwegian Research Council, Grant 234019. This work was partly conducted while Anders U. Waldeland was visiting Martin Tygel's group of applied geophysics (GGA) at CEPETRO at the University of Campinas, Brazilpt_BR
Appears in Collections:Cepetro - Artigos e Outros Documentos

Files in This Item:
File Description SizeFormat 
000473086500003.pdf22.69 MBAdobe PDFView/Open
000507806200023.pdf368.45 kBAdobe PDFView/Open


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.