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Characterization of shear and compaction bands in a porous sandstone deformed under triaxial compression

Charalampidou, Elli-Maria; Hall, Stephen LU ; Stanchits, Sergei; Lewis, Helen and Viggiani, Gioacchino (2011) In Tectonophysics 503(1-2). p.8-17
Abstract
The study of localized deformation in porous sandstones at the laboratory scale can yield valuable insights into the internal structures and mechanisms of shear zones and compaction bands that might impact on flow at a reservoir scale. Herein, we report results of a laboratory study of shear and compaction band formation in a porous sandstone using a range of full-field experimental techniques: acoustic emissions, ultrasonic tomography, X-ray tomography, and 3D volumetric digital image correlation, plus thin section and Scanning Electron Microscope observations. The two main mechanisms involved in shear and compaction band formation, grain breakage (damage) and porosity reduction (compaction), are both well captured by the combination of... (More)
The study of localized deformation in porous sandstones at the laboratory scale can yield valuable insights into the internal structures and mechanisms of shear zones and compaction bands that might impact on flow at a reservoir scale. Herein, we report results of a laboratory study of shear and compaction band formation in a porous sandstone using a range of full-field experimental techniques: acoustic emissions, ultrasonic tomography, X-ray tomography, and 3D volumetric digital image correlation, plus thin section and Scanning Electron Microscope observations. The two main mechanisms involved in shear and compaction band formation, grain breakage (damage) and porosity reduction (compaction), are both well captured by the combination of all these laboratory techniques. The combined use of these techniques demonstrated the processes of shear and compaction band generation and the associated strain components that developed in the laboratory, and potentially also increased understanding of the naturally developed equivalents. The physical mechanisms of shear and compaction involved seem to be similar, but at the laboratory scale they show differences in the proportions and the order of occurrence in time. (C) 2010 Elsevier BV. All rights reserved. (Less)
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author
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Non-destructive techniques, Full-field measurements, Shearbands, Compactionbands, Sandstone
in
Tectonophysics
volume
503
issue
1-2
pages
8 - 17
publisher
Elsevier
external identifiers
  • scopus:79952772405
ISSN
0040-1951
DOI
10.1016/j.tecto.2010.09.032
language
English
LU publication?
no
id
2a3dd50c-3f1f-47d6-9919-9da51d361fd0 (old id 2441053)
date added to LUP
2012-04-25 12:41:08
date last changed
2017-03-12 04:31:11
@article{2a3dd50c-3f1f-47d6-9919-9da51d361fd0,
  abstract     = {The study of localized deformation in porous sandstones at the laboratory scale can yield valuable insights into the internal structures and mechanisms of shear zones and compaction bands that might impact on flow at a reservoir scale. Herein, we report results of a laboratory study of shear and compaction band formation in a porous sandstone using a range of full-field experimental techniques: acoustic emissions, ultrasonic tomography, X-ray tomography, and 3D volumetric digital image correlation, plus thin section and Scanning Electron Microscope observations. The two main mechanisms involved in shear and compaction band formation, grain breakage (damage) and porosity reduction (compaction), are both well captured by the combination of all these laboratory techniques. The combined use of these techniques demonstrated the processes of shear and compaction band generation and the associated strain components that developed in the laboratory, and potentially also increased understanding of the naturally developed equivalents. The physical mechanisms of shear and compaction involved seem to be similar, but at the laboratory scale they show differences in the proportions and the order of occurrence in time. (C) 2010 Elsevier BV. All rights reserved.},
  author       = {Charalampidou, Elli-Maria and Hall, Stephen and Stanchits, Sergei and Lewis, Helen and Viggiani, Gioacchino},
  issn         = {0040-1951},
  keyword      = {Non-destructive techniques,Full-field measurements,Shearbands,Compactionbands,Sandstone},
  language     = {eng},
  number       = {1-2},
  pages        = {8--17},
  publisher    = {Elsevier},
  series       = {Tectonophysics},
  title        = {Characterization of shear and compaction bands in a porous sandstone deformed under triaxial compression},
  url          = {http://dx.doi.org/10.1016/j.tecto.2010.09.032},
  volume       = {503},
  year         = {2011},
}