Full-field laboratory imaging of localised deformation in sandstone

S. A. Hall, E. M. Charalampidou, E. Tudisco, P. Roux, G. Viggiani

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Abstract

    Rocks are neither truly homogeneous nor are laboratory test boundary conditions perfect plus at some stage of loading deformation in a specimen generally localises into shear/compaction bands, tensile/shear cracks or fractures. In the presence of such localised strains and heterogeneity point-wise measurements at a boundary do not well characterise the mechanics of the system. Therefore Full-field measurements are needed to better study the behaviour. In this paper full-field measurements, including x-ray tomography, 3D-volumetric digital image correlation and ultrasonic tomography, are used to characterise localised deformation phenomena in a sandstone deformed under triaxial compression. X-ray tomography allows 3D characterisation of the internal structure of laboratory specimens and the consequences of deformation are visible where there has been sufficient change in material density. Complementing x-ray tomography by 3D-volumetric digital image correlation (DIC) techniques allows quantification of 3D displacement and strain fields between different stages of loading by comparison of the corresponding x-ray tomography images. In addition ultrasonic tomography provides full-field measurement of ultrasonic velocities, and thus elastic properties, in laboratory specimens. DIC and x-ray tomography can provide information on structural changes due to deformation and the associated kinematics and strains, whilst ultrasonic tomography gives insight into damage (degradation of elastic properties), which are to be expected, e.g. due to compaction and related porosity reduction or grain crushing.© 2010, Society of Petroleum Engineers.

    Original languageEnglish
    Title of host publicationSociety of Petroleum Engineers - 72nd European Association of Geoscientists and Engineers Conference and Exhibition 2010 - Incorporating SPE EUROPEC 2010
    Pages1982-1986
    Number of pages5
    Volume3
    Publication statusPublished - 2010
    Event72nd EAGE Conference & Exhibition - Barcelona, Spain
    Duration: 14 Jun 201017 Jun 2010

    Conference

    Conference72nd EAGE Conference & Exhibition
    Abbreviated titleSPE EUROPEC 2010
    CountrySpain
    CityBarcelona
    Period14/06/1017/06/10

    Fingerprint

    sandstones
    tomography
    ultrasonics
    x rays
    elastic properties
    shear
    crushing
    crude oil
    engineers
    kinematics
    cracks
    rocks
    boundary conditions
    degradation
    damage
    porosity

    Cite this

    Hall, S. A., Charalampidou, E. M., Tudisco, E., Roux, P., & Viggiani, G. (2010). Full-field laboratory imaging of localised deformation in sandstone. In Society of Petroleum Engineers - 72nd European Association of Geoscientists and Engineers Conference and Exhibition 2010 - Incorporating SPE EUROPEC 2010 (Vol. 3, pp. 1982-1986)
    Hall, S. A. ; Charalampidou, E. M. ; Tudisco, E. ; Roux, P. ; Viggiani, G. / Full-field laboratory imaging of localised deformation in sandstone. Society of Petroleum Engineers - 72nd European Association of Geoscientists and Engineers Conference and Exhibition 2010 - Incorporating SPE EUROPEC 2010. Vol. 3 2010. pp. 1982-1986
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    title = "Full-field laboratory imaging of localised deformation in sandstone",
    abstract = "Rocks are neither truly homogeneous nor are laboratory test boundary conditions perfect plus at some stage of loading deformation in a specimen generally localises into shear/compaction bands, tensile/shear cracks or fractures. In the presence of such localised strains and heterogeneity point-wise measurements at a boundary do not well characterise the mechanics of the system. Therefore Full-field measurements are needed to better study the behaviour. In this paper full-field measurements, including x-ray tomography, 3D-volumetric digital image correlation and ultrasonic tomography, are used to characterise localised deformation phenomena in a sandstone deformed under triaxial compression. X-ray tomography allows 3D characterisation of the internal structure of laboratory specimens and the consequences of deformation are visible where there has been sufficient change in material density. Complementing x-ray tomography by 3D-volumetric digital image correlation (DIC) techniques allows quantification of 3D displacement and strain fields between different stages of loading by comparison of the corresponding x-ray tomography images. In addition ultrasonic tomography provides full-field measurement of ultrasonic velocities, and thus elastic properties, in laboratory specimens. DIC and x-ray tomography can provide information on structural changes due to deformation and the associated kinematics and strains, whilst ultrasonic tomography gives insight into damage (degradation of elastic properties), which are to be expected, e.g. due to compaction and related porosity reduction or grain crushing.{\circledC} 2010, Society of Petroleum Engineers.",
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    year = "2010",
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    Hall, SA, Charalampidou, EM, Tudisco, E, Roux, P & Viggiani, G 2010, Full-field laboratory imaging of localised deformation in sandstone. in Society of Petroleum Engineers - 72nd European Association of Geoscientists and Engineers Conference and Exhibition 2010 - Incorporating SPE EUROPEC 2010. vol. 3, pp. 1982-1986, 72nd EAGE Conference & Exhibition, Barcelona, Spain, 14/06/10.

    Full-field laboratory imaging of localised deformation in sandstone. / Hall, S. A.; Charalampidou, E. M.; Tudisco, E.; Roux, P.; Viggiani, G.

    Society of Petroleum Engineers - 72nd European Association of Geoscientists and Engineers Conference and Exhibition 2010 - Incorporating SPE EUROPEC 2010. Vol. 3 2010. p. 1982-1986.

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

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    AB - Rocks are neither truly homogeneous nor are laboratory test boundary conditions perfect plus at some stage of loading deformation in a specimen generally localises into shear/compaction bands, tensile/shear cracks or fractures. In the presence of such localised strains and heterogeneity point-wise measurements at a boundary do not well characterise the mechanics of the system. Therefore Full-field measurements are needed to better study the behaviour. In this paper full-field measurements, including x-ray tomography, 3D-volumetric digital image correlation and ultrasonic tomography, are used to characterise localised deformation phenomena in a sandstone deformed under triaxial compression. X-ray tomography allows 3D characterisation of the internal structure of laboratory specimens and the consequences of deformation are visible where there has been sufficient change in material density. Complementing x-ray tomography by 3D-volumetric digital image correlation (DIC) techniques allows quantification of 3D displacement and strain fields between different stages of loading by comparison of the corresponding x-ray tomography images. In addition ultrasonic tomography provides full-field measurement of ultrasonic velocities, and thus elastic properties, in laboratory specimens. DIC and x-ray tomography can provide information on structural changes due to deformation and the associated kinematics and strains, whilst ultrasonic tomography gives insight into damage (degradation of elastic properties), which are to be expected, e.g. due to compaction and related porosity reduction or grain crushing.© 2010, Society of Petroleum Engineers.

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    EP - 1986

    BT - Society of Petroleum Engineers - 72nd European Association of Geoscientists and Engineers Conference and Exhibition 2010 - Incorporating SPE EUROPEC 2010

    ER -

    Hall SA, Charalampidou EM, Tudisco E, Roux P, Viggiani G. Full-field laboratory imaging of localised deformation in sandstone. In Society of Petroleum Engineers - 72nd European Association of Geoscientists and Engineers Conference and Exhibition 2010 - Incorporating SPE EUROPEC 2010. Vol. 3. 2010. p. 1982-1986