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Keywords: Earthquake
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Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1572
... ABSTRACT: The Sichuan Basin of southwest China is the host to an increasing number of earthquakes potentially linked to hydraulic fracturing of gas shales. The current major target reservoirs are in the lower Silurian Longmaxi formation. We report laboratory shear experiments on simulated...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1690
... ABSTRACT: The majority of notable induced earthquakes happen on faults within the basement overlain by sedimentary layers. Pore pressure elevation and poroelastic effects have been considered as the driving mechanisms. In this article, a 3D numerical simulation is utilized to investigate...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1948
... Abstract The objective of this study is to develop a predictive model for induced seismicity in Azle, North Texas using one-way coupled fluid flow and geomechanical simulations. The simulation results were compared with observed earthquakes to quantitatively assess potential seismicity...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1806
...). Nevertheless, in rare cases, events can be large enough to exceed local regulations designed to prevent felt earthquakes. This can result in costly delays in resource extraction, moratoriums on resource development, or ultimately, infrastructure damage and human loss of life (Atkinson et al., 2020). Mitigating...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-2078
...) earthquakes not only have potential consequences for populations living in close proximity, but may also have economic consequences for companies, since operations can be suspended if events exceed a given magnitude (>M w 4 throughout British Columbia except for a number of specific areas where...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1630
... ABSTRACT: Earthquake is caused by the varying crustal stresses and it is a product of rock fracturing and/or slippage of major discontinuities such as faults and fracture zones. Therefore, the shear response of rock discontinuities has a direct relevance to the mechanism of earthquakes...
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-2021-1153
... Abstract Landslide disasters, one of the most destructive geo-hazards, often have serious consequences that range from economic losses to fatalities. Earthquakes, particularly those with strong ground motion, can trigger thousands of landslides in mountainous regions. The 2008 Wenchuan...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-2120
... ABSTRACT: Earthquakes are unpredictable natural phenomena that pose a threat to life, infrastructure and the environment. Related studies have revealed that some of the earthquakes are mining induced as confirmed by research done in deep gold mines in South Africa. The 2017 Botswana Geoscience...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-2011
... ABSTRACT: Machine learning techniques are supposed to be a great ally in binary classification tasks for the inventory of landslides caused by the seismic action of earthquakes. These seismic-induced landslides can be used in the creation of landslide hazard maps, from the cartography...
Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-2027
... ABSTRACT: Concerns about seismic hazards associated with fluid injection necessitate close monitoring of geothermal reservoirs to anticipate and minimize the threat of induced earthquakes. Here, we apply machine learning to a series of datasets from laboratory-scale friction experiments...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-0067
... that rock masses consisting of glassy pyroclastic rock may exhibit an increase in the permeability through disturbances in the transient stress. Upstream Oil & Gas fractured rock MPa Reservoir Characterization manga specimen Geophy flow in porous media Earthquake disturbance Fluid...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-0106
... results in some permanent increase of hydraulic aperture. Or, more simply, earthquakes equal permeability. In contrast, here, we interpret microearthquakes (MEQs) directly in terms of the stress and pressure conditions that control earthquake triggering. In many cases, triggering is dominated by fluid...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-0248
... media Fluid Dynamics normal stress Earthquake slip rate fluid pressure apparatus slip event MPa stationary block permeability direct fluid injection shear stress displacement sensor simulated fault injection 1. INTRODUCTION In the past 10 years there has been a significant increase...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-1551
... of the earthquakes. Studies regarding the relative amount of energy consumed by fracturing (E G ) is inconclusive, and the disagreement about the relative size of E G is related to the difficulty in assessing the fracture surface area. We conducted a rotary shear experiment under X-ray micro-CT, which allowed...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-0519
... ABSTRACT: Induced earthquakes due to gas production have taken place in the province of Groningen in the northeast of the Netherlands since1986. Anhydrite layers or stringers are located in the Zechstein salt above the Groningen field. Recent high resolution studies have shown that a few...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-2156
... ABSTRACT: In order to study the deformation and liquefaction of saturated tailings under earthquake action, this paper has carried out numerical calculations of seismic dynamics for the proposed Laizigou Phosphogypsum tailings pond. The pond is located in Leibo County, Sichuan Province, China...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-0491
... mount scott granite structural geology static measurement experiment basement rock Earthquake mechanical property seismicity granite velocity measurement moduli basement deformation diabase sample compressional Oklahoma 1. INTRODUCTION Compared to the boundaries of plates where...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-1557
... ABSTRACT: Near-realtime seismic monitoring of fluid injection allowed control of induced earthquakes during the stimulation of a geothermal well near Helsinki, Finland. The injection well was drilled down to 6.1 km-depth into Precambrian crystalline rocks. The well was deviated 45° from...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-0489
... recorded. The first period is characterized by relatively high average b-values (0.95) due to shallow earthquake events. In the second period, there is a rapid decrease in b-values (0.83) starting from 1991. This is likely attributed to the increase in the global seismic moment release in the same year...

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