TY - GEN
T1 - On the Unjacketed Moduli of Sedimentary Rock
AU - Makhnenko, Roman Y.
AU - Tarokh, Ali
AU - Podladchikov, Yuri Y.
N1 - Publisher Copyright:
© ASCE.
PY - 2017
Y1 - 2017
N2 - Experimental techniques have been developed to measure two poroelastic parameters: unjacketed bulk modulus Ks' and unjacketed pore modulus Ks'. Ks' is measured on samples with no jacket that are instrumented with strain gages, confining fluid (oil) penetrates inside the material and hydrostatic mean stress is equal to pore pressure, so the overal unjacketed bulk modulus can be calculated. Ks' is measured on water-saturated rock by determining the change in pore volume of the specimen from accurate measurements on pore pressure controller, while the difference between mean stress and pore pressure is preserved constant. Ks' and Ks' are measured to be pressure-independent for Berea sandstone and Opalinus clay (shale). Ks' ≈ Ks' for the clay-rich shale, but Ks' is smaller than Ks' and bulk modulus of quartz for quartz-rich Berea sandstone. This result is explained by the presence of non-connected porosity.
AB - Experimental techniques have been developed to measure two poroelastic parameters: unjacketed bulk modulus Ks' and unjacketed pore modulus Ks'. Ks' is measured on samples with no jacket that are instrumented with strain gages, confining fluid (oil) penetrates inside the material and hydrostatic mean stress is equal to pore pressure, so the overal unjacketed bulk modulus can be calculated. Ks' is measured on water-saturated rock by determining the change in pore volume of the specimen from accurate measurements on pore pressure controller, while the difference between mean stress and pore pressure is preserved constant. Ks' and Ks' are measured to be pressure-independent for Berea sandstone and Opalinus clay (shale). Ks' ≈ Ks' for the clay-rich shale, but Ks' is smaller than Ks' and bulk modulus of quartz for quartz-rich Berea sandstone. This result is explained by the presence of non-connected porosity.
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U2 - 10.1061/9780784480779.111
DO - 10.1061/9780784480779.111
M3 - Conference contribution
AN - SCOPUS:85026312958
T3 - Poromechanics 2017 - Proceedings of the 6th Biot Conference on Poromechanics
SP - 897
EP - 904
BT - Poromechanics 2017 - Proceedings of the 6th Biot Conference on Poromechanics
A2 - Dangla, Patrick
A2 - Pereira, Jean-Michel
A2 - Ghabezloo, Siavash
A2 - Vandamme, Matthieu
PB - American Society of Civil Engineers
T2 - 6th Biot Conference on Poromechanics, Poromechanics 2017
Y2 - 9 July 2017 through 13 July 2017
ER -