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Elastic properties of a reservoir sandstone: a broadband inter-laboratory benchmarking exercise

Ògúnsàmì, Abdulwaheed; Jackson, Ian; Borgomano, Jan; Fortin, Jerome; Sidi, Hasan; Gerhardt, Andre; Gurevich, Boris; Mikhaltsevitch, Vassili; Lebedev, Maxim

Description

Low-frequency forced-oscillation methods applied to a reservoir sandstone allowed determination of the Young’s modulus and Poisson’s ratio (from axial loading), bulk modulus (by oscillation of the confining pressure) and shear modulus (from torsionalforced oscillations) for comparison with conventional ultrasonic data. All tests were performed on a common sandstone core sample from an oil reservoir offshore West Africa. The results show a steady increase in ultrasonic velocities and shear...[Show more]

dc.contributor.authorÒgúnsàmì, Abdulwaheed
dc.contributor.authorJackson, Ian
dc.contributor.authorBorgomano, Jan
dc.contributor.authorFortin, Jerome
dc.contributor.authorSidi, Hasan
dc.contributor.authorGerhardt, Andre
dc.contributor.authorGurevich, Boris
dc.contributor.authorMikhaltsevitch, Vassili
dc.contributor.authorLebedev, Maxim
dc.date.accessioned2022-10-14T04:37:14Z
dc.identifier.issn0016-8025
dc.identifier.urihttp://hdl.handle.net/1885/274580
dc.description.abstractLow-frequency forced-oscillation methods applied to a reservoir sandstone allowed determination of the Young’s modulus and Poisson’s ratio (from axial loading), bulk modulus (by oscillation of the confining pressure) and shear modulus (from torsionalforced oscillations) for comparison with conventional ultrasonic data. All tests were performed on a common sandstone core sample from an oil reservoir offshore West Africa. The results show a steady increase in ultrasonic velocities and shear modulus of the dry specimen as functions of pressure, which suggests a progressive closure of the inter-granular contacts. An increase of bulk and Young’s moduli and Poisson’s ratio is observed on decane saturation of the sample when tested with a sufficiently small dead volume. This observation, consistent with Gassmann’s theory, suggests that such measurements probe undrained (saturated isobaric) conditions. Diminution or absence of such fluid-related stiffening for low-frequency measurements with dead volumes comparable with the pore volume of the specimen indicates partially drained conditions and highlights the critical role of experimental boundary conditions. Directly measured bulk and shear moduli are consistent with those derived from Young’s modulus and Poisson’s ratio. These results of the inter-laboratory testing using different measurement devices are consistent in terms of the effect of frequency and fluid saturation for the reservoir sandstone specimen. Such broad consistency illustrates the validity of forced-oscillation techniques and constitutes an important benchmarking of laboratory testing of the elastic properties of a porous medium.
dc.description.sponsorshipThe authors would like to thank the management of Wood-side Energy for their interest in and funding the project andfor permission to publish the paper.
dc.format.mimetypeapplication/pdf
dc.language.isoen_AU
dc.publisherBlackwell Publishing Ltd
dc.rights© 2020 European Association of Geoscientists & Engineers
dc.sourceGeophysical Prospecting
dc.subjectTime lapse
dc.subjectRock Physics
dc.subjectAttenuation
dc.subjectAcoustics
dc.subjectVelocity Analysis
dc.titleElastic properties of a reservoir sandstone: a broadband inter-laboratory benchmarking exercise
dc.typeJournal article
local.description.notesImported from ARIES
local.identifier.citationvolume69
dcterms.dateAccepted2020-10-14
dc.date.issued2020-11-21
local.identifier.absfor370000 - EARTH SCIENCES
local.identifier.ariespublicationa383154xPUB16734
local.type.statusPublished Version
local.contributor.affiliationOgunsami, Abdulwaheed, College of Science, ANU
local.contributor.affiliationJackson, Ian, College of Science, ANU
local.contributor.affiliationBorgomano, Jan, Ecole Normale Superieure/CNRS
local.contributor.affiliationFortin, Jerome, Ecole Normale Superieure/CNRS
local.contributor.affiliationSidi, Hasan, Woodside Energy Ltd
local.contributor.affiliationGerhardt, Andre, Woodside Energy Ltd
local.contributor.affiliationGurevich, Boris, Curtin University of Technology
local.contributor.affiliationMikhaltsevitch, Vassili, Curtin University
local.contributor.affiliationLebedev, Maxim, Curtin University of Technology
local.description.embargo2099-12-31
local.identifier.essn1365-2478
local.bibliographicCitation.issue2
local.bibliographicCitation.startpage404
local.bibliographicCitation.lastpage418
local.identifier.doi10.1111/1365-2478.13048
local.identifier.absseo280107 - Expanding knowledge in the earth sciences
dc.date.updated2021-11-28T07:23:27Z
local.identifier.scopusID2-s2.0-85096749201
CollectionsANU Research Publications

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