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dc.contributor.authorFeng, Zongcai
dc.contributor.authorGuo, Bowen
dc.contributor.authorHuang, Lianjie
dc.date.accessioned2021-04-12T13:46:41Z
dc.date.available2021-04-12T13:46:41Z
dc.date.issued2019-07-01
dc.identifier.citationFeng, Z., Guo, B., & Huang, L. (2019). Joint PP and PS plane-wave wave-equation migration-velocity analysis. GEOPHYSICS, 84(4), R507–R525. doi:10.1190/geo2018-0521.1
dc.identifier.issn0016-8033
dc.identifier.issn1942-2156
dc.identifier.doi10.1190/geo2018-0521.1
dc.identifier.urihttp://hdl.handle.net/10754/668706
dc.description.abstractConventional joint PP and PS velocity analysis is based on ray tomography. We develop a joint PP and PS wave-equation migration-velocity-analysis method using plane-wave common-image gathers (CIGs) to produce accurate P- and S-wave velocity models. The objective function of our new method consists of three terms: The first and second terms penalize the moveout residuals computed from PP and PS plane-wave CIGs, respectively, and the third term constrains the nonzero relative depth shifts between the PP and PS migration images. The moveout of plane-wave CIGs is automatically picked using a semblance analysis method, and the relative depth shifts between the PP and PS images are automatically computed using dynamic warping or manually picking the depths of certain primary reflectors. The moveout residuals and the relative depth shifts are transformed into weighted image perturbations, and they are then projected into the velocity models to update the P- and S-wave velocity models using the scalar-wave equations and their linearized forms. Numerical tests with synthetic and multicomponent field data demonstrate that our method can simultaneously invert for accurate P- and S-wave velocity models for elastic migration.
dc.description.sponsorshipThis work was supported by U.S. Department of Energy through grant no. DE-AC52-06NA25396 to the Los Alamos National Laboratory (LANL). We thank VecVecta Oil & Gas Ltd. for providing us with the Kevin Dome seismic data. Z. Feng would like to thank the King Abdullah University of Science and Technology for funding his graduate studies. The computation was performed using supercomputers of LANL's Institutional Computing Program.
dc.publisherSociety of Exploration Geophysicists
dc.relation.urlhttps://library.seg.org/doi/10.1190/geo2018-0521.1
dc.rightsArchived with thanks to GEOPHYSICS
dc.titleJoint PP and PS plane-wave wave-equation migration-velocity analysis
dc.typeArticle
dc.contributor.departmentEarth Science and Engineering Program
dc.contributor.departmentPhysical Science and Engineering (PSE) Division
dc.identifier.journalGEOPHYSICS
dc.eprint.versionPost-print
dc.contributor.institutionLos Alamos National Laboratory, Geophysics Group, MS D452, Los Alamos, New Mexico 87545, USA..
dc.identifier.volume84
dc.identifier.issue4
dc.identifier.pagesR507-R525
kaust.personGuo, Bowen
dc.identifier.eid2-s2.0-85088356829


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