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Keywords: shear stress
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Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-2318
... using direct shear tests under different boundary conditions, where the effects of the initial normal stress, normal stiffness, and joint surface roughness were studied. Both strain-softening and strain-hardening characteristics were observed for shear stress curves, depended on normal boundary...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1065
... transition fault gouge instability rapid slide displacement viscosity instability reservoir characterization upstream oil & gas fluid injection dynamic equation landslide gouge instability shear stress gouge shear layer stress-strain curve shear layer landslide gravitational load...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1632
... & gas borehole characteristic wellbore design normal stress time response shock load rock anchor aydan shear stress interface reservoir characterization okinawa experiment load response dynamic condition ryukyu limestone ribbed surface ARMA 21 1632 Experiments on bonding...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1817
... discussed. The results showed that Changing area is in the reverse strike slip stress mode, and the difference between the shear stress and the sliding resistance on the fracture zone with high dip angle is the minimum, which is the internal reason why the fracture zone is easy to be activated. The sliding...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1833
... geomechanics aditya tiwari pioneer exploration llc co-ordinate system reservoir characterization upstream oil & gas shear stress cement well system cartesian coordinate well integrity wellbore design matrix criteria zoback equation stress regime magnitude ARMA 21 1833 Impact of Tectonic...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1955
... shear stress fault slip normal stress apparatus torsion spring reservoir characterization pore pressure shear stiffness marone solid earth stiffness gouge gouge material fault gouge ARMA 21 1955 Experimental Study on the Seismic Behavior of Fault Gouge Induced by Fluid Injection Li, W...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-2079
... natural fracture reservoir characterization complex reservoir shear deformation shale gas slippage earthquake generalized shear activation criterion in-situ stress reactivation shear stress compressive strength interface hydraulic fracturing engineering main reason plastic deformation...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1436
... occurred first at the top of the specimen, where the load was applied, and then progressed along the joint as the shear stress increased. This process was consistent with the precursors i.e., precursors were first recorded near the top and later at the center and finally at the bottom of the specimen...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-2121
... studying seismicity at laboratory scale (Lockner, 1993). berea sandstone cumulative ae event specimen shear stress stress ratio experiment fluid-saturated rock plane strain compression experiment upstream oil & gas acoustic emission pore fluid strain compression experiment labuz...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-2127
... oil & gas reservoir characterization modeling & simulation annular pressure drilling borehole natural fracture borehole breakout wellbore pressure management wellbore design displacement seepage in-situ stress principal stress fracture shear stress intersection borehole...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-2027
... coupled with time-lapse active ultrasonic monitoring to predict laboratory earthquakes. We demonstrate how accurately and how far in advance ultrasonic (velocity and amplitude) features could foretell the shear stress state of laboratory faults. The outstanding question is whether the knowledge learned...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-0040
... specimen shear strength canada halite-clay 506 laboratory shear stress stiffness residual test direct shear machine normal stiffness carlsbad halite-clay 3 0 shear displacement interface canada halite-clay 507 1. INTRODUCTION Extensive collaborations between American and German salt...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-0248
... apparatus. Water was injected directly into the simulated fault through a 3 mm diameter hole drilled in the sample. During experiments, normal stress was held constant, while shear stress and water pressure varied to generate dynamic slip events. Fluid-induced slip events were found to have similar slip...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-0354
...-homogeneous contact roughness were sheared in a single direct shear setup under different sliding velocities. Our data show that depending on the sliding velocity and surface roughness, the transmitted amplitude may show a peak prior to the peak shear stress. However, some transducers follow a continuous...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-0449
... before shear failure in regions where dilation was observed. Where dilation was not detected, an increase in transmitted wave amplitude was observed, even after the peak shear stress was achieved. At high normal stresses, dilation was suppressed, which was associated with an increase in wave amplitude...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-0481
... activities to minimize fault reactivation potential. reservoir geomechanics fault slip fluid pressure plot Upstream Oil & Gas shear stress Reservoir Characterization constant injection fluid injection joint-enriched finite element modeling enhanced recovery criterion MPa Simulation...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-1547
... fracture marble Reservoir Characterization Upstream Oil & Gas Rock mechanics rock material shear stress granite axis fracture shear fracture hydraulic fracturing shear strength equilibrium fracture surface striker rock type mineral 1. INTRODUCTION The shear strength and failure...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-1700
... demonstrate three visible slip stages from static friction to unstable slip. Variable normal stress and its response to a sudden change in shear stress was observed from the acquired pulse data. Moreover, slowly stick-slip friction dominates the injection-induced shearing in the velocity of tens...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-1829
... aperture experiment 1 complex reservoir aperture collab experiment 1 hydraulic conductivity shear stress eg collab experiment 1 hydraulic fracturing Fluid Dynamics test bed geothermal reservoir frash MPa fracture pore pressure normal stress permeability specimen shear fracture foliation...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-1991
...-) seismicity. Faults are reactivated when the shear stress exceeds the limiting acceptable strength. It has been observed in The Netherlands that this occurrence can happen “unexpectedly” during the life of a UGS reservoir, i.e. when the actual stress regime is not expected to reach the failure condition...

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