Change search
ReferencesLink to record
Permanent link

Direct link
Bayesian Inversion of Time-lapse Seismic Data using Bimodal Prior Models
Norwegian University of Science and Technology, Faculty of Information Technology, Mathematics and Electrical Engineering, Department of Mathematical Sciences.
2014 (English)MasteroppgaveStudent thesis
Abstract [en]

The objective of the current study is to make inference about reservoir properties from seismic reflection data. The inversion problem is cast in a Bayesian framework, and we compare and contrast three prior model settings; a Gaussian prior, a mixture Gaussian prior and a generalized Gaussian prior. A Gauss-linear likelihood model is developed and by the convenient properties of the family of Gaussian distributions, we obtain the explicit expressions for the posterior models. The posterior models define computationally efficient inversion methods that can be used to make predictions of the reservoir variables while providing an uncertainty assessment. The inversion methodologies are tested on synthetic seismic data with respect to porosity, water saturation, and change in water saturation between two time steps. The mixture Gaussian and generalized Gaussian posterior models show encouraging results under realistic signal-noise ratios.

Place, publisher, year, edition, pages
Institutt for matematiske fag , 2014. , 112 p.
URN: urn:nbn:no:ntnu:diva-24625Local ID: ntnudaim:9842OAI: diva2:716052
Available from: 2014-05-07 Created: 2014-05-07 Last updated: 2014-05-07Bibliographically approved

Open Access in DiVA

fulltext(5608 kB)460 downloads
File information
File name FULLTEXT01.pdfFile size 5608 kBChecksum SHA-512
Type fulltextMimetype application/pdf
cover(184 kB)3 downloads
File information
File name COVER01.pdfFile size 184 kBChecksum SHA-512
Type coverMimetype application/pdf

By organisation
Department of Mathematical Sciences

Search outside of DiVA

GoogleGoogle Scholar
Total: 460 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Total: 199 hits
ReferencesLink to record
Permanent link

Direct link