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Keywords: reactivation
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Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1135
... not only have a profound impact on fluid flow, but also effect the stress field in their vicinity. In addition, pore pressure changes due to injection or production can induce slippage and fault reactivation, respectively (Pereira et al., 2014; Rueda et al., 2014; Sanchez et al., 2015; Haug et al., 2018...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1725
... ABSTRACT: The reactivation degree of natural fractures is controlled by hydraulic fracturing, so as to improve the effect of hydraulic fracturing. In this paper, a large-size true three-axis simulation experiment is used to study the mechanism and factors of cyclic variable loading fracturing...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1391
... are incorporated into the simulation model. At the completion of each pressure timestep, plastic shear strain distribution at the faults are evaluated. The study discussed the likelihood of fault reactivation that would lead to potential migration of hydrocarbons from injection regions within the reservoir...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-2079
... ABSTRACT: Casing deformation during hydraulic fracturing process dramatically decreases the number of fracturing stages and impacts the efficient exploitation of shale gas. As shear deformation is the main type of casing deformation in shale gas wells, reactivation and slippage of dominant...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1968
... creation. We build a 3D mechanical earth model of the Volve field using a combination of CAD surface and volume modeling and finite element simulation. We explicitly simulate the fault slip/reactivation by Coulomb friction behavior and assign conformal mesh to the surface-to-surface contacts of faults...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-0146
.... For the natural fracture reactivation, we obtained a threshold horizontal stress contrast beyond which the natural fracture does not undergo slip. We propose an iterative algorithm using numerical experiments to retrieve the threshold horizontal stress contrast for 16 permutations of initial reservoir pore...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-0492
... that tensile fractures are being created and closed during the process. Alternatively, shear dilations or reactivations of fault damage zones, had also been proposed as a viable mechanism to explain lower than expected lost circulation pressure. The original shear interpretation associated lost circulation...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-1991
... ABSTRACT: Underground gas storage (UGS) is a practice that is becoming widely implemented to cope with seasonal peaks of gas consumption. When the target reservoir is located in a faulted basin, a major safety issue concerns the reactivation of pre-existing faults, possibly inducing (micro...
Proceedings Papers

Paper presented at the 52nd U.S. Rock Mechanics/Geomechanics Symposium, June 17–20, 2018
Paper Number: ARMA-2018-654
... of the velocity change. Permeability of quartz increases during hold periods and permeability decreases upon reactivation, while for Marcellus gouges and 50:50 mixtures, an instant jump in permeability upon reactivation, followed by a dramatic drop during the slide period, with permeability near constant during...
Proceedings Papers

Paper presented at the 52nd U.S. Rock Mechanics/Geomechanics Symposium, June 17–20, 2018
Paper Number: ARMA-2018-882
... origin, while some others have claimed that injection is the main cause. This study aims to understand the effect of water injection within Prague, Oklahoma to evaluate the potential for fluid flow along mechanical faults and fractures discontinuities and to explore the possibility of fault reactivation...
Proceedings Papers

Paper presented at the 52nd U.S. Rock Mechanics/Geomechanics Symposium, June 17–20, 2018
Paper Number: ARMA-2018-389
... reservoirs. The key points for the success of hydraulic fracturing operations in unconventional resources are to accurately estimate the redistribution of pore pressure and stresses around the induced fracture and predict the reactivations of pre-existing faults. The fracture extension as well as pore...
Proceedings Papers

Paper presented at the 52nd U.S. Rock Mechanics/Geomechanics Symposium, June 17–20, 2018
Paper Number: ARMA-2018-791
.... Increased fracture permeability, reactivation of fractures, shear failure of the reservoir rock, and initiation of tensile fractures can affect flow and need to be taken into account to optimize doublet performance. 1. INTRODUCTION The success of geothermal projects in naturally fractured reservoirs...
Proceedings Papers

Paper presented at the 52nd U.S. Rock Mechanics/Geomechanics Symposium, June 17–20, 2018
Paper Number: ARMA-2018-552
... of the reservoir and adjacent fault zones that can be reactivated if sufficiently high pressures are reached. However, to date it is not fully understood how exactly different u pressure conditions affect the timing and size of the induced earthquakes. In this study, we therefore investigate the effect of varying...
Proceedings Papers

Paper presented at the 52nd U.S. Rock Mechanics/Geomechanics Symposium, June 17–20, 2018
Paper Number: ARMA-2018-1360
... permeability and friction throughout phases of the seismic cycle. This is accomplished a slide-hold-slide and pore pressure stepping experiments completed in double direct shear. Fracture reactivation results in permeability enhancement only after sufficiently long interseismic repose periods. The magnitude...
Proceedings Papers

Paper presented at the 52nd U.S. Rock Mechanics/Geomechanics Symposium, June 17–20, 2018
Paper Number: ARMA-2018-1319
... transition viscosity serebrinsky fracture propagation complex reservoir Simulation interaction map Reservoir Characterization Upstream Oil & Gas journal of petroleum technology equation hydraulic fracture fracture propagation fluid viscosity Blanton natural fracture reactivation crack...
Proceedings Papers

Paper presented at the 51st U.S. Rock Mechanics/Geomechanics Symposium, June 25–28, 2017
Paper Number: ARMA-2017-0602
... ABSTRACT: Variations of internal pressure within reservoirs structurally compartmentalized by sealing faults induce changes in deformations and stresses. If these changes are significant, they can create favorable conditions for fault reactivation by shear or tensile modes. In that scenario...
Proceedings Papers

Paper presented at the 51st U.S. Rock Mechanics/Geomechanics Symposium, June 25–28, 2017
Paper Number: ARMA-2017-0909
... ABSTRACT: The potential of inducing fault reactivation by a synthetic nuclear waste repository in a clay-stone formation is here investigated. The target clay formation may be expected to be almost impermeable, having self-healing and long-term plastic properties, to make sure the canisters...
Proceedings Papers

Paper presented at the 51st U.S. Rock Mechanics/Geomechanics Symposium, June 25–28, 2017
Paper Number: ARMA-2017-0270
... studies of the South American plate in Brazil’s Potiguar basin, it is found that intraplate seismicity occurs at uplifted basin borders (areas over thin, hot, weaker lithosphere) where pre-existing faults are prone to be reactivated by small pressure perturbations. Conversely, central basins (areas over...
Proceedings Papers

Paper presented at the 50th U.S. Rock Mechanics/Geomechanics Symposium, June 26–29, 2016
Paper Number: ARMA-2016-152
... aperture reservoir stimulation stimulation equation bottom-hole pressure reactivation injection application joint element fracture permeability 1. INTRODUCTION The coupled thermo-hydro-mechanical (THM) processes in porous and fractured media are associated with a wide range of applications...
Proceedings Papers

Paper presented at the 50th U.S. Rock Mechanics/Geomechanics Symposium, June 26–29, 2016
Paper Number: ARMA-2016-658
... faults which transect or bound the reservoir, or are located in the vicinity of the reservoir, causing associated seismicity. Whether or not faults are (seismically) reactivated during reservoir depletion depends on a complex interplay of many factors, such as the combination of initial stress state...

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