dc.contributor.author | Forberg, Ole Bernhard | |
dc.contributor.author | Kjøsnes, Øyvind Andre Gjerde | |
dc.contributor.author | Omre, Henning | |
dc.date.accessioned | 2023-02-27T12:59:23Z | |
dc.date.available | 2023-02-27T12:59:23Z | |
dc.date.created | 2022-05-02T12:22:03Z | |
dc.date.issued | 2022 | |
dc.identifier.citation | IEEE Transactions on Geoscience and Remote Sensing. 2022, 60 . | en_US |
dc.identifier.issn | 0196-2892 | |
dc.identifier.uri | https://hdl.handle.net/11250/3054288 | |
dc.description.abstract | A Bayesian seismic amplitude versus offset (AVO) inversion scheme with a laterally coupled prior model for porosity, water saturation, and volume of clay is proposed. A 2-D section and a 3-D volume of an oil reservoir are studied. The oil reservoir is considered at the initial state, which entails gravitationally induced bimodality in the water saturations along vertical traces. A selection Gaussian random field (S-GRF) prior model, capable of representing this bimodality, is specified for porosity, water saturation, and volume of clay. The S-GRF is specified to have lateral correlation, which may reduce the impact of trace-unique signal errors in the seismic AVO data on the inversion results. The likelihood model is linear and Gaussian, for which the S-GRF prior model is conjugate; hence, the posterior model is also an S-GRF. The form of the posterior distribution is therefore known and its parameter values can be analytically computed. Real seismic AVO data from the 2-D section and the 3-D volume are inverted and the results appear to be reliable along validation wells and represent a geologically plausible reservoir design. Furthermore, a notable variance reduction in the laterally coupled posterior model relative to an alternative posterior model without lateral coupling is achieved. | en_US |
dc.language.iso | eng | en_US |
dc.publisher | IEEE | en_US |
dc.rights | Navngivelse 4.0 Internasjonal | * |
dc.rights.uri | http://creativecommons.org/licenses/by/4.0/deed.no | * |
dc.title | Bayesian Seismic AVO Inversion Using a Laterally Coupled Multimodal Prior Model | en_US |
dc.title.alternative | Bayesian Seismic AVO Inversion Using a Laterally Coupled Multimodal Prior Model | en_US |
dc.type | Peer reviewed | en_US |
dc.type | Journal article | en_US |
dc.description.version | acceptedVersion | en_US |
dc.source.pagenumber | 0 | en_US |
dc.source.volume | 60 | en_US |
dc.source.journal | IEEE Transactions on Geoscience and Remote Sensing | en_US |
dc.identifier.doi | 10.1109/TGRS.2021.3113865 | |
dc.identifier.cristin | 2020588 | |
cristin.ispublished | true | |
cristin.fulltext | postprint | |
cristin.qualitycode | 2 | |