... structural geology Biot correspond flow in porous media compressibility reservoir geomechanics viscosity Reservoir Characterization Upstream Oil & Gas constitutive equation Fluid Dynamics platen experiment application strain rate deformation migration Geophy power law...

... non-uniformly distributed pore pres- sure, the full length Model 2 should be used. The steel platens were included to better model any end effects. The sample material is assumed to be linear- elastic perfectly plastic with a failure. surface defined by the Mohr-Coulomb. failure criterion and a non...

... ABSTRACT ABSTRACT: For static compressions of spheres, a new stress analysis for isotropic elastic spheres compressed between two rigid platens is proposed by incorporating the Hertz contact stress. The predictions of the failure load for various sizes and strengths of spheres agree very well...

... to a frictionless sample-platen interface); the second is for a perfectly bonded interface between the marble and the platen (i.e. no slip between marble and metal). The third configuration models a frictional interface between the platen and marble, with several different coefficients of friction. Whole-sample...

... side, only tiny fractures were observed. platen experiment asymmetrical hydraulic fracture Upstream Oil & Gas AE event geometry opposite face laboratory experiment indenter hydraulic fracture propagation hydraulic fracturing borehole front view high stress indenter fracture...

... grinding machine until a smooth surface was obtained. hydraulic fracturing platen Coalescence fracture coalescence Upstream Oil & Gas uniaxial test flaw geometry Crack pattern secondary crack initiation geometry loading wing crack specimen flaw confinement stress crack initiation...