Coupling of radial permeability and uniaxial loading of a saturated sandstone

Mark D. Nickerson, John M Kemeny

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

3 Scopus citations

Abstract

Extensive testing and numerical analysis/modeling has been done by others on the coupling of normal stress and permeability associated with natural and man-made horizontal fractures. These researchers have shown that there is a decrease in permeability with increasing normal stress. However, there has been little published research into how permeability changes when loading non-horizontal fractures, and loading unfractured rock into the upper portion of the stress-strain curve. We have uniaxially loaded a sandstone through the upper stress-strain curve while measuring radial permeability. The test is very simple, but is providing very interesting results. We have shown that there are three stages in the permeability evolution. Initially, the permeability decreases, then remains constant in the lower and middle stress-strain curve. In the very upper portion of the stress-strain curve permeability increases markedly. The decrease in permeability is believed to be due to a reduction of pore space. The constant permeability is believed to be due to a subsequent tight packing of grains where the pore space cannot become smaller, yet the stress is not sufficient to initiate cracks. The increased permeability is believed to be due to the coalescence or localization of failure along vertical cracks.

Original languageEnglish (US)
Title of host publication2nd North American Rock Mechanics Symposium, NARM 1996
Editors Hassani, Mitri, Aubertin
PublisherAmerican Rock Mechanics Association (ARMA)
Pages1673-1680
Number of pages8
ISBN (Print)905410838X, 9789054108382
StatePublished - Jan 1 1996
Event2nd North American Rock Mechanics Symposium, NARM 1996 - Montreal, Canada
Duration: Jun 19 1996Jun 21 1996

Other

Other2nd North American Rock Mechanics Symposium, NARM 1996
CountryCanada
CityMontreal
Period6/19/966/21/96

ASJC Scopus subject areas

  • Geotechnical Engineering and Engineering Geology
  • Geology
  • Geophysics

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    Nickerson, M. D., & Kemeny, J. M. (1996). Coupling of radial permeability and uniaxial loading of a saturated sandstone. In Hassani, Mitri, & Aubertin (Eds.), 2nd North American Rock Mechanics Symposium, NARM 1996 (pp. 1673-1680). American Rock Mechanics Association (ARMA).