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- W2322342237 abstract "PreviousNext No AccessSEG Technical Program Expanded Abstracts 2013Rock physics estimation of cement type and impact on the permeability for the Snøhvit field, the Barents SeaAuthors: Sissel GrudeMartin LandrøJack DvorkinSissel GrudeNTNUSearch for more papers by this author, Martin LandrøNTNUSearch for more papers by this author, and Jack DvorkinStanford USearch for more papers by this authorhttps://doi.org/10.1190/segam2013-0073.1 SectionsSupplemental MaterialAboutPDF/ePub ToolsAdd to favoritesDownload CitationsTrack CitationsPermissions ShareFacebookTwitterLinked InRedditEmail Abstract Laboratory permeability data from a wet sandstone reservoir (the Tubåen formation, Hammerfest Basin, located in the Barents Sea) subject to CO2 sequestration indicates an order of magnitude permeability variation at the same porosity. The velocity and density well data from the well, obtained prior to CO2 injection, show that at the same porosity, the samples with higher permeability have higher elastic moduli (both compressional and shear) as compared to the samples with lower permeability. To understand and quantify this effect, we fit the elastic modulus versus porosity well data with the theoretical constant-cement model theoretical curves. This theoretical rock physics analysis shows that the lower-permeability, softer samples have less contact cement that their high-permeability, stiffer counterparts. One interpretation of this meaning is that in the lower-permeability samples, part of the pore space is filled with fines that do not contribute to the grain-to-grain cementation thus reducing the stiffness (as compared to the well-cemented samples). This means, in turn, that in the softer samples, the fines partly clog the pores thus reducing the permeability. This logic is supported by the geological character of the Tubåen formation where the tidal and marine influence acts to worsen the grain sorting compared to well-sorted distributary channel sediment. Permalink: https://doi.org/10.1190/segam2013-0073.1FiguresReferencesRelatedDetails SEG Technical Program Expanded Abstracts 2013ISSN (print):1052-3812 ISSN (online):1949-4645Copyright: 2013 Pages: 5258 Publisher:Society of Exploration Geophysicists HistoryPublished: 19 Aug 2013 CITATION INFORMATION Sissel Grude, Martin Landrø, and Jack Dvorkin, (2013), Rock physics estimation of cement type and impact on the permeability for the Snøhvit field, the Barents Sea, SEG Technical Program Expanded Abstracts : 2670-2674. https://doi.org/10.1190/segam2013-0073.1 Plain-Language Summary PDF DownloadLoading ..." @default.
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- W2322342237 date "2013-08-19" @default.
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- W2322342237 title "Rock physics estimation of cement type and impact on the permeability for the Snøhvit field, the Barents Sea" @default.
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