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Keywords: diffusivity
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Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1622
... coefficient undrained condition heat extraction fluid pressure reduction reservoir thermo-poro-elastic response diffusivity stress path depth dependent thermo-poro-elastic response geothermal reservoir undrained response original state bulk modulus ARMA 21 1622 Depth dependent thermo-poro...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-0371
... be strongly affected by the interaction between two mechanisms: the elastic effects caused by the hydraulic pressure applied inside fractures and the poro-mechanical effects caused by the fluid infiltration inside the porous media (i.e. fluid diffusivity); this, in turn, is affected by the injection rate used...
Proceedings Papers

Paper presented at the 51st U.S. Rock Mechanics/Geomechanics Symposium, June 25–28, 2017
Paper Number: ARMA-2017-0544
... ABSTRACT: This paper investigates the effects of fluid injection and heat extraction on pressure and temperature diffusion processes, and fracture/matrix deformation in an enhanced geothermal reservoir. The geometry of a single linear fracture in a 2D permeable rock matrix is chosen. Using...
Proceedings Papers

Paper presented at the 51st U.S. Rock Mechanics/Geomechanics Symposium, June 25–28, 2017
Paper Number: ARMA-2017-0517
... solid problem Artificial Intelligence case 2 natural fracture diffusivity stress state seismicity flow-driven stress quasi-static solution fluid pressure rupture dynamic shear rupture discontinuity injection Magnitude rupture problem fracture 1. INTRODUCTION Fluid injection...
Proceedings Papers

Paper presented at the 51st U.S. Rock Mechanics/Geomechanics Symposium, June 25–28, 2017
Paper Number: ARMA-2017-0136
... ABSTRACT: Hydraulic fracturing induced microseismicity is often attributed to pore pressure changes alone thereby neglecting the role of elastic stress perturbations due to fracture opening. Here we show how fracture opening affects the in situ elastic stresses and the pore pressure diffusion...
Proceedings Papers

Paper presented at the 47th U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2013
Paper Number: ARMA-2013-355
... Upstream Oil & Gas subsidence rate Louisiana poroelastic compaction diffusivity shale shale compaction Fluid Dynamics Thickness mechanism hydraulic diffusivity compaction model subsidence time-dependent compaction permeability epoch 1 compaction sand reservoir deformation 1...
Proceedings Papers

Paper presented at the 47th U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2013
Paper Number: ARMA-2013-391
... Abstract: A new technique has been developed for non-contact, optical scanning, of rock cores to provide simultaneous, continuous, high resolution, and precision measurements for evaluation of thermal conductivity, thermal diffusivity, and volumetric heat capacity. The technique is rapid...
Proceedings Papers

Paper presented at the 46th U.S. Rock Mechanics/Geomechanics Symposium, June 24–27, 2012
Paper Number: ARMA-2012-509
... ABSTRACT: The optical scanning (OS) technique and instrumentation has been developed for continuous high-resolution, noncontact profiling of rock heterogeneity and simultaneous measurements of thermal conductivity, thermal diffusivity and, as a result, volumetric heat capacity of rock samples...
Proceedings Papers

Paper presented at the 46th U.S. Rock Mechanics/Geomechanics Symposium, June 24–27, 2012
Paper Number: ARMA-2012-252
... minimum effective stress effective stress main crack hydraulic fracturing diffusivity initiation permeability propagation crack initiation tensile stress equation 1. INTRODUCTION Recently, geomechanics has played an important role in understanding petroleum production in diverse areas...
Proceedings Papers

Paper presented at the The 42nd U.S. Rock Mechanics Symposium (USRMS), June 29–July 2, 2008
Paper Number: ARMA-08-325
...-hydraulic process seems to be dictated by three factors: a) shale permeability, b) shale membrane efficiency, and c) ion diffusivity. The verification of the pressure transmission tests can be accomplished by invoking partially coupled analytical solutions, as performed by Chen et al. [6] This paper...
Proceedings Papers

Paper presented at the Golden Rocks 2006, The 41st U.S. Symposium on Rock Mechanics (USRMS), June 17–21, 2006
Paper Number: ARMA-06-910
... for a transient pressure transmission test on shale by solving the previously derived partially-coupled diffusivity equations taking into account chemical effects. The diffusivity equations were solved under a no-flow boundary condition which is prescribed in a particular kind of transient pressure transmission...
Proceedings Papers

Paper presented at the Vail Rocks 1999, The 37th U.S. Symposium on Rock Mechanics (USRMS), June 7–9, 1999
Paper Number: ARMA-99-0877
... and the thermal and hydraulic diffusivities of the Lac du Bonnet granite. Several water injection and heater tests were conducted during this experiment. In an injection test, a given volume of water is pumped quasi instantaneously in a sealed-off interval of the borehole, while in a heater test, heat is produced...
Proceedings Papers

Paper presented at the The 22nd U.S. Symposium on Rock Mechanics (USRMS), June 29–July 2, 1981
Paper Number: ARMA-81-0079
... conductivity and diffusivity above room pressure values. We report here measurements of thermal conductivity, diffusivity, and linear expansion carried out in an apparatus designed to make such measurements on large grained rocks at physical and chemical conditions expected in an underground waste repository...
Proceedings Papers

Paper presented at the The 22nd U.S. Symposium on Rock Mechanics (USRMS), June 29–July 2, 1981
Paper Number: ARMA-81-0105
... pressure in the laboratory and have measured longitudinal sound speed and gas diffusivity under these conditions. The pressure field is created inside an annulus of fluid injection holes in a cylindrical sample; fluid flows radially outward down the pore pressure gradient to the sample's exterior. We...

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