This study presents the feasibility of performing permeability measurement by interpretation of consolidation-induced time-dependent deformation of sample when an instant pore pressure pulse is applied. For the interpretation of measured transient behavior, a procedure to back-calculate permeability from measured consolidation strain is developed. The estimation shows promising results that gave similar order of magnitude of permeability compared to that measured from steady state method. However, this study shows that creep behavior affects the interpretation of permeability significantly as the effective stress increases. This study indicates that proper calibration of creep effect is important to get reliable values. This study also present some recommendations to optimize the results.
Permeability Testing using Pressure Pulse Loading and the Consolidation Induced Transient Deformation
Choi, J. C., Grande, L., and M. Soldal. "Permeability Testing using Pressure Pulse Loading and the Consolidation Induced Transient Deformation." Paper presented at the 51st U.S. Rock Mechanics/Geomechanics Symposium, San Francisco, California, USA, June 2017.
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