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Keywords: fault slip
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Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1948
... calibrated by history matching well responses. The calibrated pressure distributions were updated into the geomechanical simulation model to assess fault slips and resulting fault frictional energy. We utilized the alternating conditional expectation (ACE) algorithm to build a correlation between...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1955
... dependence of fault slip: for the same amount of injected volume, lower injection rate builds up lower pore pressure, and triggers less slip and less seismic events. 1. Introduction Fault gouge is crushed and ground-up rock produced by friction between the two sides when a fault moves (Scholz, 2019...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-0115
... depletion induced dynamic fault rupture. The numerical results demonstrate significant control of fault asperity height on rupture styles and fault slip induced seismogenesis. The generated rupture size and tremor magnitude may be useful in understanding the nature of induced seismicity in an onshore gas...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-0140
... pressure diffusion, the growth of aseismic fault slip and the seismicity triggering. Through our investigations, we find that the competition between the fluid pressurization and mechanical stress transfer associated both to pressurization and co-seismic rupture is a viable mechanism for seismic events...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-0481
... needed to reach complete damage. Transient fault slip is captured by the progressive damage initiation and propagation in joint elements. This study expects to provide insights into the correlation between fluid injection and fault instabilities and contribute to the optimized design of injection...
Proceedings Papers

Paper presented at the 52nd U.S. Rock Mechanics/Geomechanics Symposium, June 17–20, 2018
Paper Number: ARMA-2018-552
..., but leads to a larger magnitude. Reservoir Characterization fault slip normal stress rupture Upstream Oil & Gas scenario 2 reactivation produced water discharge scenario 1 effective normal stress scenario 3 shear stress Injection Rate reservoir geomechanics pressure condition...
Proceedings Papers

Paper presented at the 52nd U.S. Rock Mechanics/Geomechanics Symposium, June 17–20, 2018
Paper Number: ARMA-2018-1239
.... This helps to explain observations of induced seismicity below the formation targeted by hydraulic fracturing. Reservoir Characterization fault slip displacement British Columbia different stiffness shear displacement numerical investigation stress drop injection Upstream Oil & Gas...
Proceedings Papers

Paper presented at the 51st U.S. Rock Mechanics/Geomechanics Symposium, June 25–28, 2017
Paper Number: ARMA-2017-0355
... displacements, stress drops and rupture lengths. The presence of a viscoelastic caprock even further promotes fault slip and nucleation of a seismic events at an early stage of depletion. Faults without offset are reactivated during later stages of depletion and involve larger slip displacements, stress drops...
Proceedings Papers

Paper presented at the 50th U.S. Rock Mechanics/Geomechanics Symposium, June 26–29, 2016
Paper Number: ARMA-2016-828
... favorability geology permeability potential Washington geometry Geothermal Resource strain rate Fluid Dynamics volcano Earthquake mshsz gradient Reservoir Characterization Upstream Oil & Gas fault slip volcanic vent deformation Mount St traction washington division permeability 1...
Proceedings Papers

Paper presented at the 50th U.S. Rock Mechanics/Geomechanics Symposium, June 26–29, 2016
Paper Number: ARMA-2016-658
..., and a fault frictional behavior based on a slip-weakening law. The simplified reservoir and fault geometry of the model are representative for the Dutch gas fields. Simulated fault slip displacements and fault slip lengths were used to calculate moment magnitudes of induced seismic events. In addition...
Proceedings Papers

Paper presented at the 48th U.S. Rock Mechanics/Geomechanics Symposium, June 1–4, 2014
Paper Number: ARMA-2014-7485
.... The model included a limited-dimension pre-existing fault which cannot be easily detected by geophysical surveys. The numerical modeling was used to simulate changes in the stress distribution in the reservoir, fault and surrounding rock due to Co 2 injection. The fault slip obtained from the model...
Proceedings Papers

Paper presented at the 47th U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2013
Paper Number: ARMA-2013-300
... associated with gas production. Additional, but a smaller, fault slip of up to 0.5 cm could be expected during the subsequent phase of cushion gas injection. During annual cycles of gas injection and production, the Central fault is not critically stressed and the predicted stress changes lie in the elastic...
Proceedings Papers

Paper presented at the 47th U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2013
Paper Number: ARMA-2013-517
... Abstract: We present a field experiment where we nucleated slow slip at 0.28 km depth through the artificial pressurization of a normal fault while continuously monitoring strain, seismicity and pore pressures. The episodicity of fault slip is related to dilatancy-strengthening revealed...
Proceedings Papers

Paper presented at the 44th U.S. Rock Mechanics Symposium and 5th U.S.-Canada Rock Mechanics Symposium, June 27–30, 2010
Paper Number: ARMA-10-450
... in potential negative consequences to the economic performance of the field, among others, including seabed subsidence and platform sinking, porosity and permeability loss, pore collapse and sand production, fault slip and bedding-parallel slip, casing deformation and well failure. Some of these have been...
Proceedings Papers

Paper presented at the DC Rocks 2001, The 38th U.S. Symposium on Rock Mechanics (USRMS), July 7–10, 2001
Paper Number: ARMA-01-0885
... in the fault zone have been estimated by modeling the slipped portion of the fault as a shear (mode II) fracture. Based on the fault slip magnitude, the seismic moment and the magnitude of the generated earthquake have been computed. The results show that even if the magnitude of induced earthquake...
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-99-1145
... as a shear (mode II) fracture. Displacement discontinuity between the sides of this fracture gives an estimate of the fault slip magnitude. INTRODUCTION Geological discontinuities such as faults are inherent in most petroleum formations. It is well known that changing fluid state in a hydrocarbon...
Proceedings Papers

Paper presented at the The 35th U.S. Symposium on Rock Mechanics (USRMS), June 5–7, 1995
Paper Number: ARMA-95-0447
... function, structure function (dynamic Green's function), and recording system function. Upstream Oil & Gas fault slip slip displacement specimen shear band energy release rate tensor global measurement analytic solution Reservoir Characterization release rate acoustic emission...
Proceedings Papers

Paper presented at the The 35th U.S. Symposium on Rock Mechanics (USRMS), June 5–7, 1995
Paper Number: ARMA-95-0519
... the elastodynamic behaviour of the rock mass (Sicbrits et al 1994). Areas under investigation include: representation of dynamic fault slip and rockburst mechanisms; interaction of seismic waves with tabular stopes and geological structures such as dykes, and determining geometric factors which influence...
Proceedings Papers

Paper presented at the The 32nd U.S. Symposium on Rock Mechanics (USRMS), July 10–12, 1991
Paper Number: ARMA-91-1145
... of intraplate earthquakes are coincident with the active fracture belts as well. However, the reactivation of a fault is usually showed as the dislocation of two sides of the fault, that is fault slip. It is a fact that the occurrence of an earthquake is a releasing process of the elastic strain energy...

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