Neutron imaging of rock mechanics experiments

Erika Tudisco, Stephen A. Hal, Jan Hovind, Nikolay Kardjilov, Elli Maria Charalampidou, Hiroki Sone

Research output: Chapter in Book/Report/Conference proceedingPaper in conference proceedingpeer-review

Abstract

Understanding the mechanical behaviour of porous rocks and how this influences the fluid flow is key in a number of resource engineering challenges, in particular hydrocarbon production and CO2 sequestration. Deformation in these porous materials is, in general, not homogeneous, as deformation localises into narrow shear or compaction bands, which might then evolve into fractures. These local deformation features can act as barriers or conduits for fluid flow, depending on their evolution and resultant properties. This work focusses on achieving quantitative understanding of how localised deformation (shear or compaction bands and fractures) can change (local and global) permeability in porous rocks. In particular the aim is to overcome limitations of traditional methods for permeability measurement, which consider bulk sample measurements, and do not provide a good understanding of the permeability variations in the presence of material heterogeneity, e.g., localised deformations. Better understanding of the controlling factors on permeability evolution due to localised deformation requires mapping of the full permeability and strain fields through test specimens. Neutron tomography, in combination with 3D-volumetric Digital Image Correlation (3DDIC) is used to measure deformation and fast neutron radiography is used to visualise fluid-flow through the characterised deformed samples.

Original languageEnglish
Title of host publicationIntegrating Innovations of Rock Mechanics
Subtitle of host publicationProceedings of the 8th South American Congress on Rock Mechanics, 15–18 November 2015, Buenos Aires, Argentina
EditorsRicardo J. Rocca, Roberto M. Flores, Alejo O. Sfriso
PublisherIOS Press
Pages231-236
Number of pages6
ISBN (Electronic)978-1-61499-605-7
ISBN (Print)978-1-61499-604-0
DOIs
Publication statusPublished - 2015 Jan 1
Event8th South American Congress on Rock Mechanics, SACRM 2015 - Buenos Aires, Argentina
Duration: 2015 Nov 152015 Nov 18

Conference

Conference8th South American Congress on Rock Mechanics, SACRM 2015
Country/TerritoryArgentina
CityBuenos Aires
Period2015/11/152015/11/18

Subject classification (UKÄ)

  • Geotechnical Engineering

Free keywords

  • DIC
  • Fluid flow
  • Neutron imaging
  • Neutron radiography
  • Tomography

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