... failure of rock fractures. A new triaxial apparatus is developed that allows us to measure the frictional properties of fractures under different loading and pore pressure conditions. This apparatus can independently control the pore pressure, shear stress, and normal stress acting on the fracture...

... to deform, slide on each other and the pore network evolved. While the standard API cell measures only conductivity changes under different normal stresses, the presented method gives a greater advantage by allowing determination of the simultaneous effect of normal and shear stresses on the components...

... Upstream Oil & Gas Artificial Intelligence pore pressure gas reservoir Reservoir Characterization orientation normal stress shear stress gas field fault geomechanical activity reservoir geomechanics fgai fault plane stress field principal stress fault activity kela-2 gas...

... reservoir characterization drilling fluids and materials ppm cacl 2 normal stress failure envelope rock strength west africa shale shale sample mechanical property shear stress wellbore integrity drilling fluid formulation mineral oil shale internal friction angle cohesive strength chemical...

... fault reactivation wellbore integrity fracture normal stress orientation geomechanical model reservoir geomechanics stress field principal stress critical pore pressure wellbore design criterion intersection pore pressure upstream oil & gas reservoir characterization gal horizontal...

...). drilling fluid chemistry drilling fluid formulation barite sag VFM Zamora drilling fluids and materials gap inclination particle µcosα drilling fluid property upper layer normal stress boundary condition drilling fluid selection and formulation inclination equation lower layer sinÎ...

... with different b 1 /b 2 ratios are shown in Fig. 2 , which is a reproduction of Fig. 2 in Chiu's paper. 3 This plot demonstrates that the stresses are non-uniform for points inside and outside the cuboid. Also it shows that the normal stresses are continuous across the cuboid boundary. The second example...

... reduction) depends strongly on the ratio of the fracture wall compression strength (or intact rock uniaxial compressive strength if the fracture surface is not altered) to the normal stress level (JCS/crn and the fracture surface morphology, expressed by the joint roughness coefficient (JRC). Introduction...

... ekofisk field reservoir permeability orientation complex reservoir fracture permeability permeability fracture conductivity permeability anisotropy normal stress Introduction Fractures are present in almost all hydrocarbon reservoirs, but it is only when fractures form an interconnected...

... interface thermal resistance factor coefficient edge temperature normal stress temperature distribution diamond surface upstream oil & gas bit selection thermal model specific heat bit design pdc heat transfer coefficient buildup edge drilling condition sedimentary rock geology...