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Title: Evolution of permeability and Biot coefficient at high mean stresses in high porosity sandstone

A series of constant mean stress (CMS) and constant shear stress (CSS) tests were performed to investigate the evolution of permeability and Biot coefficient at high mean stresses in a high porosity reservoir analog (Castlegate sandstone). Permeability decreases as expected with increasing mean stress, from about 20 Darcy at the beginning of the tests to between 1.5 and 0.3 Darcy at the end of the tests (mean stresses up to 275 MPa). The application of shear stress causes permeability to drop below that of a hydrostatic test at the same mean stress. Results show a nearly constant rate decrease in the Biot coefficient as the mean stress increases during hydrostatic loading, and as the shear stress increases during CMS loading. In conclusion, CSS tests show a stabilization of the Biot coefficient after the application of shear stress.
Authors:
 [1] ;  [1] ;  [2] ;  [1]
  1. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
  2. Clarkson Univ., Potsdam, NY (United States)
Publication Date:
Report Number(s):
SAND2017-4146J
Journal ID: ISSN 1365-1609; 652622
Grant/Contract Number:
AC04-94AL85000
Type:
Accepted Manuscript
Journal Name:
International Journal of Rock Mechanics and Mining Sciences
Additional Journal Information:
Journal Volume: 96; Journal Issue: C; Journal ID: ISSN 1365-1609
Publisher:
Elsevier
Research Org:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Org:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
Country of Publication:
United States
Language:
English
Subject:
58 GEOSCIENCES
OSTI Identifier:
1375031
Alternate Identifier(s):
OSTI ID: 1415323

Ingraham, Mathew D., Bauer, Stephen J., Issen, Kathleen A., and Dewers, Thomas A.. Evolution of permeability and Biot coefficient at high mean stresses in high porosity sandstone. United States: N. p., Web. doi:10.1016/j.ijrmms.2017.04.004.
Ingraham, Mathew D., Bauer, Stephen J., Issen, Kathleen A., & Dewers, Thomas A.. Evolution of permeability and Biot coefficient at high mean stresses in high porosity sandstone. United States. doi:10.1016/j.ijrmms.2017.04.004.
Ingraham, Mathew D., Bauer, Stephen J., Issen, Kathleen A., and Dewers, Thomas A.. 2017. "Evolution of permeability and Biot coefficient at high mean stresses in high porosity sandstone". United States. doi:10.1016/j.ijrmms.2017.04.004. https://www.osti.gov/servlets/purl/1375031.
@article{osti_1375031,
title = {Evolution of permeability and Biot coefficient at high mean stresses in high porosity sandstone},
author = {Ingraham, Mathew D. and Bauer, Stephen J. and Issen, Kathleen A. and Dewers, Thomas A.},
abstractNote = {A series of constant mean stress (CMS) and constant shear stress (CSS) tests were performed to investigate the evolution of permeability and Biot coefficient at high mean stresses in a high porosity reservoir analog (Castlegate sandstone). Permeability decreases as expected with increasing mean stress, from about 20 Darcy at the beginning of the tests to between 1.5 and 0.3 Darcy at the end of the tests (mean stresses up to 275 MPa). The application of shear stress causes permeability to drop below that of a hydrostatic test at the same mean stress. Results show a nearly constant rate decrease in the Biot coefficient as the mean stress increases during hydrostatic loading, and as the shear stress increases during CMS loading. In conclusion, CSS tests show a stabilization of the Biot coefficient after the application of shear stress.},
doi = {10.1016/j.ijrmms.2017.04.004},
journal = {International Journal of Rock Mechanics and Mining Sciences},
number = C,
volume = 96,
place = {United States},
year = {2017},
month = {5}
}