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Title: Induced seismicity in enhanced geothermal systems: a numerical investigation on the influence of the friction model
Author: Piris, G.
Griera, Albert
Gómez Rivas, Enrique
Herms, I
Goula Suriñach, Xavier
Keywords: Sismologia
Energia geotèrmica
Geothermal resources
Issue Date: 1-Sep-2016
Publisher: Sociedad Geológica de España
Abstract: Hydraulic stimulation in Enhanced Geothermal Systems (EGS) produces low-magnitude induced seismicity that sometimes can result in damage at the Earth's surface. Numerical simulations taking into account the hydrothermo- mechanic behaviour of geological reservoirs are an essential tool in order to evaluate and forecast induced seismicity in such systems. In this study, the numerical code CFRAC is used to evaluate the seismicity of an isolated fault during fluid injection using two different frictional models: (i) rate-and-state and (ii) velocity weakening. The results show that both models predict similar microseismicity, although there are differences in the number of events and their magnitudes between both models.
Note: Reproducció del document publicat a:
It is part of: Geo-Temas, 2016, vol. 16, num. 1, p. 949-952
ISSN: 1576-5172
Appears in Collections:Articles publicats en revistes (Mineralogia, Petrologia i Geologia Aplicada)

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