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dc.contributor.advisorTjelmeland, Håkonnb_NO
dc.contributor.advisorBorgos, Hildenb_NO
dc.contributor.authorSande, Stiannb_NO
dc.date.accessioned2014-12-19T13:58:49Z
dc.date.available2014-12-19T13:58:49Z
dc.date.created2011-06-27nb_NO
dc.date.issued2006nb_NO
dc.identifier426876nb_NO
dc.identifierntnudaim:1472nb_NO
dc.identifier.urihttp://hdl.handle.net/11250/258819
dc.description.abstractA new inversion method for time-lapse seismic data is developed. The method is based on the 3-dimensional spatially coupled AVO inversion in the Fourier domain, describedin Buland et al. (2003b). Further, a technique for estimating the time-shift betweentwo seismic surveys, called non-rigid matching (Nickel & Sønneland, 1999), is an importantand integrated part of the method. In addition to using the technique to alinethe repeated survey with the baseline survey, the estimates produced by the non-rigidmatching are treated as observations together with the seismic observations.As the natural choice for many geophysical inversion problems, the inversion methodproposed is set in a Bayesian framework. Prior information in the form of well logscombined with seismic observations and an estimate of the time-shift, produce the posteriordistribution. The posterior distribution not only gives a best fit to the inversionproblem, but also a measure of the uncertainty.Synthetic data based on the Gullfaks field are used to test our time-lapse inversionmethod, including tests of robustness.nb_NO
dc.languageengnb_NO
dc.publisherInstitutt for matematiske fagnb_NO
dc.subjectntnudaim:1472no_NO
dc.subjectSIF3 fysikk og matematikkno_NO
dc.subjectIndustriell matematikkno_NO
dc.titleBayesian 4D inversion: integrating time-shift informationnb_NO
dc.typeMaster thesisnb_NO
dc.source.pagenumber78nb_NO
dc.contributor.departmentNorges teknisk-naturvitenskapelige universitet, Fakultet for informasjonsteknologi, matematikk og elektroteknikk, Institutt for matematiske fagnb_NO


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