Unjacketed bulk compressibility of sandstone in laboratory experiments

R. M. Makhnenko, J. F. Labuz

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

12 Scopus citations

Abstract

The unjacketed bulk modulus of sandstone, Ks', is often considered to be equal to the bulk modulus of quartz, the main mineral which forms it. However, preliminary tests and some other works show that for Berea sandstone this assumption might be violated. Three different types of laboratory experiments were performed on the rock to measure Ks' and Biot's coefficient α: unjacketed plane strain compression, drained compression with water collection, and jacketed/unjacketed hydrostatic compression. The values of these parameters are reported at 5 MPa mean Terzaghi effective stress; α is found to be in the range of 0.64 - 0.74 and Ks' = 27.2 - 30.9 GPa. The latter value is significantly smaller than the measured bulk modulus of quartz, Kquartz = 37.0 GPa. It can be explained by the presence of clays or the existence of non-connected pore space in the rock.

Original languageEnglish (US)
Title of host publicationPoromechanics V - Proceedings of the 5th Biot Conference on Poromechanics
Pages481-488
Number of pages8
DOIs
StatePublished - Nov 15 2013
Event5th Biot Conference on Poromechanics, BIOT 2013 - Vienna, Austria
Duration: Jul 10 2013Jul 12 2013

Publication series

NamePoromechanics V - Proceedings of the 5th Biot Conference on Poromechanics

Other

Other5th Biot Conference on Poromechanics, BIOT 2013
CountryAustria
CityVienna
Period7/10/137/12/13

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