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dc.contributor.authorLiu, Lu
dc.contributor.authorFei, Tong
dc.contributor.authorLuo, Yi
dc.contributor.authorGuo, Bowen
dc.date.accessioned2017-08-23T11:54:07Z
dc.date.available2017-08-23T11:54:07Z
dc.date.issued2017-08-17
dc.identifier.citationLiu L, Fei T, Luo Y, Guo B (2017) Workflow for near-surface velocity automatic estimation: Source-domain full-traveltime inversion followed by waveform inversion. SEG Technical Program Expanded Abstracts 2017. Available: http://dx.doi.org/10.1190/segam2017-17657809.1.
dc.identifier.doi10.1190/segam2017-17657809.1
dc.identifier.urihttp://hdl.handle.net/10754/625397
dc.description.abstractThis paper presents a workflow for near-surface velocity automatic estimation using the early arrivals of seismic data. This workflow comprises two methods, source-domain full traveltime inversion (FTI) and early-arrival waveform inversion. Source-domain FTI is capable of automatically generating a background velocity that can kinematically match the reconstructed plane-wave sources of early arrivals with true plane-wave sources. This method does not require picking first arrivals for inversion, which is one of the most challenging aspects of ray-based first-arrival tomographic inversion. Moreover, compared with conventional Born-based methods, source-domain FTI can distinguish between slower or faster initial model errors via providing the correct sign of the model gradient. In addition, this method does not need estimation of the source wavelet, which is a requirement for receiver-domain wave-equation velocity inversion. The model derived from source-domain FTI is then used as input to early-arrival waveform inversion to obtain the short-wavelength velocity components. We have tested the workflow on synthetic and field seismic data sets. The results show source-domain FTI can generate reasonable background velocities for early-arrival waveform inversion even when subsurface velocity reversals are present and the workflow can produce a high-resolution near-surface velocity model.
dc.description.sponsorshipThe authors would like to thank Saudi Aramco for its support and permission to publish this paper.
dc.publisherSociety of Exploration Geophysicists
dc.relation.urlhttp://library.seg.org/doi/10.1190/segam2017-17657809.1
dc.rightsArchived with thanks to SEG Technical Program Expanded Abstracts 2017
dc.subjecttraveltime
dc.subjectvelocity
dc.subjectwave equation
dc.subjectinversion
dc.titleWorkflow for near-surface velocity automatic estimation: Source-domain full-traveltime inversion followed by waveform inversion
dc.typeConference Paper
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Division
dc.contributor.departmentEarth Science and Engineering Program
dc.identifier.journalSEG Technical Program Expanded Abstracts 2017
dc.eprint.versionPublisher's Version/PDF
dc.contributor.institutionSaudi Aramco
kaust.personGuo, Bowen
refterms.dateFOA2018-06-13T18:47:09Z


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