... found. The results show that KIIC depends on the normal stress, and slightly increases with increasing confining pressures. 1. INTRODUCTION The process of slip initiation and propagation along frictional discontinuities is an important problem in engineering where design often involves the application...

... log analysis well logging Artificial Intelligence US government Upstream Oil & Gas frequency ISBN friction pixel imagery normal stress dielectric permittivity cohesion permittivity porosity coefficient earth material reflectance saturation shear strength phreatic surface...

... of the individual surfaces are practically unchanged [4,5]. machine learning Reservoir Characterization reservoir geomechanics Artificial Intelligence hydraulic fracturing Upstream Oil & Gas relation hyperbolic model normal stress compliance rock compliance specimen power-law model...

... behavior of rock joints is estimated. Comparing the theoretical analyses with the experimental results, the constitutive model is applied to the numerical simulation. Reservoir Characterization wellbore integrity Wellbore Design Upstream Oil & Gas displacement Rock mechanics normal stress...

.... The evolution of the size and location of the damaged areas are analyzed in relation with the normal stress for a given shear displacement. 1 INTRODUCTION Literature on rock joint mechanical behavior and their applications to various workings stability analysis is quite abundant over the last fifteen years...

... 1990). In the case of mechanical behavior under normal stress, these studies show that the topology of the flow network changes with the normal stress until a critical normal stress is reached. Artificial Intelligence Completion Installation and Operations hydraulic fracturing complex...

... 1 INTRODUCTION ABSTRACT: Joint shear behavior is rediscussed on the basis of a 2D statistical characterization and a 3D modelling of a joint roughness morphology. The shear processes and progressive degradation phenomena on the joint surfaces are analyzed in relation with normal stress...

... level that accounts for the entire matrix of the structure. Reservoir Characterization reservoir geomechanics Upstream Oil & Gas fabric structure orientation chemistry fabric anisotropy normal stress particle shale stress anisotropy nonlinear Claystone elementary particle cluster...

... the simplest to the most cumbersome situation, i.e. clean smooth and infilled rough surfaces, respectively. Upstream Oil & Gas strength Mohr envelope displacement shear technique normal stress triaxial direct shear test discontinuity specimen testing rock specimen shear displacement...

... reservoir simulation Upstream Oil & Gas final stage strength displacement resistance normal stress failure zone direct shear test shale strength parameter large-scale direct shear test discontinuity specimen discontinuous model failure phenomenon failure process interpretation stress...

... angle normal stress dilation joint behavior investigation shear displacement shear stress reverse direction experimental result shear strength joint dilation Itasca Consulting Group continuously-yielding model friction angle dilation curve Rock Mechanics, Nelson & Laubach (eds) © 1994...

... understanding of fracture behavior at the micro-(or asperity) scale. Reservoir Characterization reservoir geomechanics hydraulic fracturing Upstream Oil & Gas elastic rock fracture length displacement rock behavior fracture penneability variation normal stress single fracture straight...

... exponential distribution Rotterdam normal stress Grossmann stability coefficient Balkema safety factor confidence limit shear strength probability statistical distribution normal distribution Rock Block Stability safety probabilistic approach intensity Rock Mechanics, Nelson & Laubach (eds...

...) permeability, vertical and horizontal deformation. The results indicated that: changes in the conductivity of a fracture are dependant on the normal stress during fracture shear displacement; the pore collapse mechanism may begin at lower stresses in fractured chalk due to stress concentrations caused...

... and 15 cm. The test data were analyzed for variability within and between laboratories. Reservoir Characterization US government Upstream Oil & Gas engineer waterway experiment station specimen size strength variation normal stress army engineer waterway experiment station variability...

... regional principal stress pore pressure normal stress Pollard fluid pressure tensile parent joint opening-mode fracture compressive stress rock mass contemporaneous orthogonal joint fracture orthogonal joint principal stress daughter joint perpendicular equation deformation Rock...

... as is observed on the Parkfield segment. The spatial distribution of the asperities is shown to be an important factor in determining the progression of failure of the fault segment. Reservoir Characterization Upstream Oil & Gas persistent asperity mechanical interaction normal stress Parkfield...