... direction)-positioned wellbores within the pay zone, where the spacing between wells was changed to 50 m and 100 m. Progressive fracture propagation and the evolution of stress shadow with sequential multi-stage fracturing were monitored. A marked stress shadow was observed for closer well spacings under...

... subdiscipline geology reservoir geomechanics reinforcement geologist europe government reservoir characterization deformation rock type metals & mining rock engineering evolution rockmass bonding displacement practice iop publishing iop conf theory tunnel environmental science 833...

... claystone have been performed to show the effect of the thermal load (generated by the waste packages), of the water seepage and of the creep strain of the host rock on the stress evolution in the concrete liner. The results show the preponderant role of the creep strain of COx claystone on the stress state...

... Abstract Climatic actions are one of the factors controlling the evolution of slopes, this paper is devoted to a specific effect, relatively little studied, related to the effect of climate-driven temperature changes on rock massif deformation. The particularity of the study is to focus...

... to perform an acoustic survey at repetitive intervals (every 10 seconds) during a hydraulic fracture growth experiment. The analysis of the evolution of the active acoustic monitoring changes allow to image the evolution of the fracture front (via an inversion of the active acoustic waves diffracted...

... Abstract In this work, a thermo-mechanical (TM) numerical approach is presented and applied to investigate the stress-strain evolution of an alpine rock-slope located in the Central Italian Alps (Sondrio Province). Along the "Cimaganda" slope a massive rockslide event occurred around 900 A.D...

... (DIC) data to describe the evolution of damage and cracking in response to tensile loading during multi-stage relaxation experiments on inverted single edge notch bending (iSENB) specimens. The source locations of the AEs correspond to a process zone ahead and around the notch indicating the evolution...

... mm. The evolution of the fracture process zone was continuously scanned using X-ray radiography during the realized Mode I fracture toughness tests (FTT). The scanning was conducted using an industrial X-ray micro-tomographic inspection system equipped with a flat panel X-ray detector of 4,000...

..., the homogenized parameters of the intact shale material are determined. On the other hand, based on the X-ray microtomography imaging results, the geometry of the shale structure at meso scale is investigated. The studies focus on observation of the evolution of 3D crack network in the samples of shale under...

... ABSTRACT: The pore pressure evolution induced by excavation of drifts is analyzed by means of a fully coupled hydro-mechanical finite element simulation. Special emphasis is given to anisotropic initial stress state and anisotropy of the elastic parameters of the rock. The main goal...

... flow in porous media node porosity hydraulic fracturing Rock mechanics Artificial Intelligence Upstream Oil & Gas triaxial compression deformation Shirahama sandstone permeability evolution evolution asahina modeling permeability evolution Modeling & Simulation Fluid...

... Reservoir Characterization France dimension empirical approach metals & mining compression strength resistance stability coefficient pillar Upstream Oil & Gas strength slenderness geometry application safety factor evolution Standard Deviation uniaxial compression strength...

... with grain crushing and bond damage. The main purpose of the model is to provide a tool that, based on simple information about the evolving microstructure of a granular rock, can be able to quantify the evolution of the strength of sedimentary rocks, as well as the alterations of their elastic domain. 1...

... reservoir geomechanics pillar core strength model Upstream Oil & Gas confinement extensometer data evolution pillar metals & mining Sudbury dilation rock mass Reservoir Characterization stress path constitutive model dilatancy numerical model constitutive model choice...

... material geoscience Temperature Effect permeability Reservoir Surveillance Cox saturation dependent thermal conductivity thermal conductivity Fluid Dynamics Germany MPa evolution dresden ABSTRACT: This paper presents coupled thermo-hydro-mechanical (THM) simulations of the laboratory...

... role concerning the deformation behavior. Especially, the spatial distribution and geometry of the rock slide toe are considered as key factors, in particular with regard to the ability of "self-stabilization". In this study, the impact of the rock slide geometry on the evolution of the stability...

... reservoir geomechanics calibration rock mass vibration propagation Reservoir Characterization dynamic property shear contact stiffness normal stiffness contact stiffness Upstream Oil & Gas assembly evolution stiffness discrete element particle model structural geology particle...

... developed by Lambe & Whitman (1964) and by Schmertmann & Osterberg (1960) In particular, this latter obtains the evolution of cohesion and friction as a function of axial strain so, using the definition of the plastic parameter, the dependency of cohesion and friction with is obtained. In turn, Hoek-Brown...

... we compared the evolution of two types of precursory indicators over time: pre- cursory rockfalls and pre-failure deformation. Our study was based on a multi-temporal comparison of LiDAR data using a Terrestrial Laser Scanner (TLS) Ilris 3D (Optech). The analysis was performed in a pilot study area...

... in the 1296 Figure 2. SSM on sample P2-045-S6 at eff = 12 MPa ( c = 15 MPa, Pp = 3 MPa). Evolution of pore pressure (Pu, upstream; Pd, downstream) and in/out (Vin/Vout) cumulative volumes. Figure 3. PDM on sample P2-045-S6 at eff = 17 MPa ( c = 30 MPa, Pp = 13 MPa). Evolution of pore pressure (Pu, upstream...