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Keywords: deviatoric stress
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Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-0477
... ABSTRACT: Steady state creep rate of rock salt often is described through the Norton-Hoff (NH) law. Recent experimental results suggest that this law must be modified in the low deviatoric stress range. It is suggested to adopt, instead of a linear law, a step-wise linear law in the (Equation...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-1870
... deviatoric stress hydraulic fracturing breakdown natural fracture cylinder surface hydraulic fracture fracture slippage cylinder experiment fracture propagation Upstream Oil & Gas Ghassemi interaction injection pressure strain gauge discontinuity propagation wellbore 1. INTRODUCTION...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-2046
... properties as well as creep deformation. shale gas complex reservoir structural geology porous clay matrix composition Shale Rock modeling international journal Shen matrix creep deformation Shao axial strain deviatoric stress elastic property Microstructure Reservoir Characterization...
Proceedings Papers

Paper presented at the 52nd U.S. Rock Mechanics/Geomechanics Symposium, June 17–20, 2018
Paper Number: ARMA-2018-338
... micrometer. Calibration results showed that the performance of the CMD and the digital micrometer matched with high accuracy. TWHC test results showed that an increase in the cement content resulted in an increase in the deviatoric stress required to initiate a borehole convergence. Moreover, it was observed...
Proceedings Papers

Paper presented at the 52nd U.S. Rock Mechanics/Geomechanics Symposium, June 17–20, 2018
Paper Number: ARMA-2018-1300
... ABSTRACT: In Biot's theory of isotropic poroelasticity, deviatoric stress does not induce pore pressure as the mean stress is the solely factor responsible for such changes. However, for an anisotropic rock the deviatoric stress can induce an undrained pore pressure change, a consequence that...
Proceedings Papers

Paper presented at the 52nd U.S. Rock Mechanics/Geomechanics Symposium, June 17–20, 2018
Paper Number: ARMA-2018-1331
... ABSTRACT: Rock salt exhibits a strain and time dependent response under deviatoric stresses. The practical implications of this creeping behavior have been studied extensively for the design of underground excavations. Advanced constitutive models combined with modern computing capabilities...
Proceedings Papers

Paper presented at the 52nd U.S. Rock Mechanics/Geomechanics Symposium, June 17–20, 2018
Paper Number: ARMA-2018-1223
.... reservoir geomechanics volumetric strain axial strain Reservoir Characterization irrecoverable strain AE event Symposium Upstream Oil & Gas acoustic emission deviatoric stress Wellbore Design tangent strain ratio cumulative ae event millistrain PPD positive dilatancy triaxial test...
Proceedings Papers

Paper presented at the 52nd U.S. Rock Mechanics/Geomechanics Symposium, June 17–20, 2018
Paper Number: ARMA-2018-016
... simulation result relative size dashpot reservoir geomechanics Simulation cohesion stress state creep displacement Upstream Oil & Gas viscosity bingham viscoplastic model contact pressure borehole viscoelastic-plastic model deviatoric stress constitutive model power law viscoelastic...
Proceedings Papers

Paper presented at the 52nd U.S. Rock Mechanics/Geomechanics Symposium, June 17–20, 2018
Paper Number: ARMA-2018-1020
..., elevated pore pressure and temperature conditions. Reservoir Characterization structural geology pore pressure wellbore integrity osmosis shale deviatoric stress Wellbore Design axial stress stress state reservoir geomechanics Upstream Oil & Gas failure criterion geomechanical...
Proceedings Papers

Paper presented at the 52nd U.S. Rock Mechanics/Geomechanics Symposium, June 17–20, 2018
Paper Number: ARMA-2018-1049
.... Reservoir Characterization volumetric strain Miyazaki mechanical property flow assurance Simulation particle MPa constitutive model hydrate saturation Upstream Oil & Gas hydrate sand strength hydrate particle nonlinear constitutive model triaxial test hydrate deviatoric stress contact...
Proceedings Papers

Paper presented at the 51st U.S. Rock Mechanics/Geomechanics Symposium, June 25–28, 2017
Paper Number: ARMA-2017-0917
... normal to the bedding. Artificial Intelligence Manco PAB bedding machine learning Manco PEB complex reservoir creep deformation creep test MPa creep behavior Reservoir Characterization Upstream Oil & Gas shale gas deviatoric creep deviatoric stress creep strain rate steady...
Proceedings Papers

Paper presented at the 51st U.S. Rock Mechanics/Geomechanics Symposium, June 25–28, 2017
Paper Number: ARMA-2017-0182
... deviatoric stress. The first case shows that confining stress more heavily impacts dynamic mechanical properties than static. The effect is most prominent at high deviatoric stresses, where stress-induced damage increases the difference between dynamic and static Young’s moduli. The second case shows that...
Proceedings Papers

Paper presented at the 51st U.S. Rock Mechanics/Geomechanics Symposium, June 25–28, 2017
Paper Number: ARMA-2017-0402
... hydraulic fracturing peak deviatoric stress deviatoric stress Upstream Oil & Gas normal stress MPa epoxy configuration sandstone sample rock sample geomechanical property shear stress mudstone sample reservoir geomechanics strength maximum shear stress plastic deformation shear strength...
Proceedings Papers

Paper presented at the 50th U.S. Rock Mechanics/Geomechanics Symposium, June 26–29, 2016
Paper Number: ARMA-2016-046
... since only one material axis is loaded under a deviatoric compression test for either of these orientations). Reservoir Characterization orientation Upstream Oil & Gas shale reservoir geomechanics GPa Utica Shale moduli anisotropy dynamic measurement deviatoric stress gauge axis...
Proceedings Papers

Paper presented at the 50th U.S. Rock Mechanics/Geomechanics Symposium, June 26–29, 2016
Paper Number: ARMA-2016-337
... influence of deviatoric stress, confining pressure, and temperature on secondary creep rate was evaluated based on these recent test data. Because the individual test conditions were originally designed to meet the specific needs of each project, the test conditions for the creep tests varied. The study in...
Proceedings Papers

Paper presented at the 50th U.S. Rock Mechanics/Geomechanics Symposium, June 26–29, 2016
Paper Number: ARMA-2016-545
... stress ratio (q/s' m ): critical state region, transition region, and geostatic compression region. We built these large strain models with Elfen; we model the sediments as poroelasto-plastic materials with a critical state soil model (SR3). Overall, we predict porosity, mean and deviatoric stresses in...
Proceedings Papers

Paper presented at the 50th U.S. Rock Mechanics/Geomechanics Symposium, June 26–29, 2016
Paper Number: ARMA-2016-713
... axial stress using a constant radial stress boundary condition (Static and dynamic). c. Poisson's ratio, the negative ratio of the change in radial strain to the change in axial strain (Static and dynamic). tri-axial test static data deviatoric stress structural geology volumetric strain...
Proceedings Papers

Paper presented at the 50th U.S. Rock Mechanics/Geomechanics Symposium, June 26–29, 2016
Paper Number: ARMA-2016-680
... goal is then to determine which mud weight to use to prevent borehole closure. Reservoir Characterization drilling fluid formulation drilling fluid chemistry drilling fluids and materials Barker viscosity dependency drilling fluid property characteristic viscosity deviatoric stress...
Proceedings Papers

Paper presented at the 49th U.S. Rock Mechanics/Geomechanics Symposium, June 28–July 1, 2015
Paper Number: ARMA-2015-349
... additives for expanding cement, is considerably higher than conventional cements and so there is a need to quantify the necessary cement properties to suit specific well-conditions. material model reservoir characterization deformation deviatoric stress nonlinear stress analysis failure mode...
Proceedings Papers

Paper presented at the 49th U.S. Rock Mechanics/Geomechanics Symposium, June 28–July 1, 2015
Paper Number: ARMA-2015-767
... determined with the knowledge of the unstressed porosity. Once volumetric strain reaches a stable value, the second deviatoric load cycle is conducted by ramping the axial deviatoric stress at a suggested constant axial strain rate until the sample reaches its failure point typically referred to Maximum...

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