..., Canada X. Yang Luoyang Institute of Science and Technology, Luoyang, Henan Province, China ABSTRACT: This paper presents the results of a series of biaxial compressive tests of granite cubes sizing of 75 mm, 100 mm and 125 mm. Testing was done with a newly developed biaxial test apparatus, having...

... is simulated for the parametric studies in order for the relationships between the microscopic parameters and fracture toughness to be understood. wellbore integrity strength reservoir geomechanics Upstream Oil & Gas Reservoir Characterization hydraulic fracturing Simulation biaxial test...

... point 800 MPa Upstream Oil & Gas characterisation stress field stress measurement elastic parameter Reservoir Characterization biaxial test deviatoric stress metals & mining exploitation anisotropy complex mining district prone overcore main gate in-situ stress field accident...

... fracturation anisotropic rock MPa determination Upstream Oil & Gas reservoir geomechanics anisotropic criteria displacement discontinuity method rupture propagation crack hydraulic fracturing propagation Simulation plane biaxial test anisotrope hydraulic fracture test anisotropic medium...

... pointload test arrangement with eight concentrated loads evenly distributed around the cylindrical surface of the rock core. Assuming that for this test arrangement the axial tensile stress at the sample center is obtained by superposing four times the axial tensile stress evaluated for the biaxial test, he...

...) University of Karlsruhe SUMMARY: The geotechnical properties of a heavily overconsolidated Jurassic clay shale have been determined. Undisturbed cylindrical samples of 0.57 m diameter and cubical samples of 0.4 m lateral length were tested in triaxial tests and biaxial tests, resp . The test data were...