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Pore Pressure Coupling with Stress Inducing Rock Failure: An Experimental Investigation
The variation in pore pressure and stress may cause sand production during the service life of underground gas storages into sandstones. As such a sand production is generally linked to the rock failure or intense damage, experimental investigations were made to better understand the coupled effects between pore pressure and stress applied to a Vosges sandstone. A series of tri-axial compression tests was firstly conducted to investigate this rock basic mechanical responses until failure from which a simple failure criterion was derived. Following hydrostatic compression tests were also performed to measure the Biot’s coefficient. The critical pore pressure that can be sustained under confining pressure and deviatoric stress can then be predicted with the help of these preliminary tests and under the assumption of a constant Biot’s coefficient (i.e. not affected by the deviatoric stress). Three validation tests were carried out to measure the critical pore pressure which turned out to be close to the predicted one.
Pore Pressure Coupling with Stress Inducing Rock Failure: An Experimental Investigation
The variation in pore pressure and stress may cause sand production during the service life of underground gas storages into sandstones. As such a sand production is generally linked to the rock failure or intense damage, experimental investigations were made to better understand the coupled effects between pore pressure and stress applied to a Vosges sandstone. A series of tri-axial compression tests was firstly conducted to investigate this rock basic mechanical responses until failure from which a simple failure criterion was derived. Following hydrostatic compression tests were also performed to measure the Biot’s coefficient. The critical pore pressure that can be sustained under confining pressure and deviatoric stress can then be predicted with the help of these preliminary tests and under the assumption of a constant Biot’s coefficient (i.e. not affected by the deviatoric stress). Three validation tests were carried out to measure the critical pore pressure which turned out to be close to the predicted one.
Pore Pressure Coupling with Stress Inducing Rock Failure: An Experimental Investigation
Hu, Cong (Autor:in) / Skoczylas, Frédéric (Autor:in)
Sixth Biot Conference on Poromechanics ; 2017 ; Paris, France
Poromechanics VI ; 223-229
06.07.2017
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
| British Library Conference Proceedings | 2002
Pore Pressure and Stress Distributions Around a Hydraulic Fracture in Heterogeneous Rock
| Online Contents | 2017
Pore Pressure and Stress Distributions Around a Hydraulic Fracture in Heterogeneous Rock
| Online Contents | 2017