Seismic attenuation measurements from multicomponent vertical seismic profile data

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atmire.migration.oldid5381
dc.contributor.advisorLawton, Donald
dc.contributor.advisorMargrave, Gary
dc.contributor.authorMontano Spagnolo, Michelle
dc.contributor.committeememberBentley, Laurence
dc.contributor.committeememberTrad, Daniel
dc.date.accessioned2017-03-09T15:59:31Z
dc.date.available2017-03-09T15:59:31Z
dc.date.issued2017
dc.date.submitted2017en
dc.description.abstractVertical seismic pro le (VSP) data provide a means to estimate the seismic wavelet at different receiver depths. The downgoing wavefi eld has always been the key to measure attenuation (Q) and enables us to correct for the effects of seismic attenuation on seismic data. We demonstrate that we can also use the upgoing wave field to estimate Q, using reflections and mode-converted waves. In this work, Q is estimated from synthetic VSP downgoing and upgoing wavefi elds by using the spectral matching method. We also estimated Q, using the spectral matching method, from VSP data collected in a 500 m deep well in a heavy oil field and a 2000 m deep well in a shale gas play in Western Canada. For the first case, we obtained values of Qp of approximately 50 and Qs of 20 for the strata intersected by the well. For the second case, we obtained values of Qp of approximately 50 and Qs of 30. In the case of Qs estimations, our results indicate that using the upgoing converted wave field provides good estimations when downgoing S-wave are not available in the data.en_US
dc.identifier.citationMontano Spagnolo, M. (2017). Seismic attenuation measurements from multicomponent vertical seismic profile data (Master's thesis, University of Calgary, Calgary, Canada). Retrieved from https://prism.ucalgary.ca. doi:10.11575/PRISM/27735en_US
dc.identifier.doihttp://dx.doi.org/10.11575/PRISM/27735
dc.identifier.urihttp://hdl.handle.net/11023/3667
dc.language.isoeng
dc.publisher.facultyGraduate Studies
dc.publisher.institutionUniversity of Calgaryen
dc.publisher.placeCalgaryen
dc.rightsUniversity of Calgary graduate students retain copyright ownership and moral rights for their thesis. You may use this material in any way that is permitted by the Copyright Act or through licensing that has been assigned to the document. For uses that are not allowable under copyright legislation or licensing, you are required to seek permission.
dc.subjectGeophysics
dc.subject.otherSeismic attenuation
dc.subject.otherQ
dc.subject.otherVSP
dc.titleSeismic attenuation measurements from multicomponent vertical seismic profile data
dc.typemaster thesis
thesis.degree.disciplineGeology and Geophysics
thesis.degree.grantorUniversity of Calgary
thesis.degree.nameMaster of Science (MSc)
ucalgary.item.requestcopytrue
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