..., and laboratory investigation of the deformational behavior of rocks under alternative triaxial loading regimes is necessary. reservoir geomechanics CTC uniaxial amban mishra procedia engineering 191 deformational response experiment MPa loading Reservoir Characterization volumetric strain...

... strength, a pore collapse and matrix densification even if the stress level is much higher than that prevailing in situ as well as a time-dependent shear and volumetric strains. A multi-mechanism (tensile, shear, pore collapse/compaction, creep) model of the mechanical behavior for highly porous...

... if the canister is breached. dimension assessment transition Reservoir Characterization volumetric strain stress path cross damage threshold envelope construction Upstream Oil & Gas Thickness envelope shaft excavation damage zone extensile strain damage zone reservoir geomechanics...

... the ability of the rock to isolate the waste from the biosphere (Damjanac & Fairhurst 2010). solid waste management jura limestone damage threshold strength long-term behaviour Reservoir Characterization volumetric strain mechanism threshold load level relaxation test deformation...

... of the model fracture experiments performed in the field using detonation of explosives (example 1) and electric discharge impulses (example 2). complex reservoir blast hole reflection Uenishi hydraulic fracturing volumetric strain experiment specimen Upstream Oil & Gas dynamic...

... control, volumetric strain measurements and loading unloading cycles (Fig. 1). 1.2 Dilatancy Dilatancy is the volumetric expansion of a material, for instance rock, particularly after failure. Semi- nal researchers in rock mechanics remarked that this parameter was difficult to calculate, due to the diffi...

... strength properties are derived. It was found from creep tests that below a certain stress or strain level the samples showed negligible creep as evaluated by inspection of the axial, lateral and volumetric strain over time. This stress level in the order of 75 % of the failure stress was used to delineate...

... by inter-block shear failure, the rock strength criteria derived by classification systems such as GSI are well adapted (Carter et al 2008). Upstream Oil & Gas volumetric strain reservoir geomechanics Smaland granite strain gauge Artificial Intelligence strength initiation laboratory...

... of EDZ dimensions. It was demonstrated that both an inner and outer excavation damage zone (EDZi and EDZo) could be dif- ferentiated using the model results by the reversal point in the volumetric strain (con- traction to extension). This indicates the transition between a confined micro-damaged state...

... spalling is initiated. Different types of laboratory experiments have therefore been proposed for investigating spalling. Reservoir Characterization volumetric strain initiation MPa strength strain gauge experimental determination notch Diederich Upstream Oil & Gas äspö diorite...

... and secant Poisson's ratios, the threshold of absolute dilatancy, the axial strain at failure and the dilatant volumetric strain at failure. anna mudstone dilatant volumetric strain characteristic ultimate strength Reservoir Characterization axial stress axial strain threshold moisture...

... ABSTRACT: Initiation of damage is defined as the onset of irreversible volumetric strains, and is determined by laboratory experiments. Axisymmetric triaxial tests following compression and extension stress paths have been performed, with an overall volumetric strain measurement...

... and foliation of the rocks, and the hydraulic characteristics of the rocks and artificially fractured joints were also studied at different temperatures. The results could be used in the design of various underground facilities. flow in porous media volumetric strain Whangdeung granite compressive...

... Wellbore Design crack density model parameter closure Upstream Oil & Gas Simulation low stress level Reservoir Characterization volumetric strain crack length aspect ratio open crack reservoir geomechanics microcrack shear failure Poisson compression stress-strain curve...