... ABSTRACT: In anisotropic materials Skempton's B parameter becomes a second order tensor. It is well established from laboratory experiments that the Skempton B tensor may deviate significantly from isotropy, which will influence the pore pressure response. The anisotropy of B in essence...

... pressure response Berea sandstone Mean stress specimen pressure response reservoir geomechanics pore pressure experiment coefficient saturation anisotropy perpendicular Skempton Upstream Oil & Gas undrained pore pressure response deviatoric stress application drainage system...

... ABSTRACT: Fluid production from or injection into a subsurface reservoir leads to stress pressure changes inside and outside the reservoir. The overburden often consists of low permeability shale, and the undrained pore pressure response may be estimated from Skempton’s empirical equations...

... isotherm. The study proposes an isotherm correlation, which represents ten different shale formations. Analyzing the transient pore pressure response in the downstream side of shale sample allows calculating the transport coefficients of shale samples. Hydraulic properties of shales are obtained...

... triaxial cells. Upstream Oil & Gas controller Mount Messenger Formation structural geology strength mercury injection specimen diameter Reservoir Characterization consolidation programme laboratory loading soft rock pore pressure response threshold entry pressure classification...

... stress as m = ( 1 +2Pc)/3, Skempton s undrained pore pressure response can be written as: dmp BABp 3 1 2 (1) Where A and B are the Skempton coefficients. For hydrostatic condition all three principal stresses equal to confining pressure ( 1= 2 = 3=Pc) and there is no deviatoric stress...

... response tangential strain reservoir geomechanics Abousleiman laboratory poromechanic simulation effective radial stress response loading exponential pressurization pore pressure response inner boundary ARMA 08-242 Laboratory Poromechanics Simulation and Modeling of Transversely Isotropic...

... and one-dimensional (consolidometer) compression test cells. Facilities and procedures for undisturbed sampling, sample preparation and testing of this unique material are described. Pe neability, thermal expansion and compression, shear strength and deformation properties, and pore pressure response...