relation: https://episodesplatform.eu/eprints/1789/
title: Seismogenic index and magnitude probability of earthquakes  induced during reservoir fluid stimulations
creator: Shapiro, Serge A.
creator: Dinske, Carsten
creator: Langenbruch, Cornelius
creator: Wenzel, Friedemann
subject: Collective properties of seismicity
subject: Technology-seismicity interaction
subject: Copper Basin
subject: Japan
subject: Basel
subject: Texas
subject: Paradox Valley
subject: Geothermal energy production
subject: Unconventional hydrocarbon extraction
description: An important characteristic of seismicity is the distribution  and magnitude of earthquakes. Fluid injection in rocks,  aimed to create enhanced geothermal systems (EGS), can  sometimes produce significant seismic events (e.g., Majer et  al., 2007). This is rarely the case in hydraulic fracturing of  hydrocarbon reservoirs. However, in any case the behavior of  the seismicity triggering in space and in time is controlled by  the process of stress relaxation and pore-pressure perturbation  that was initially created at the injection source. This relaxation  process can be approximated by pressure diffusion (possibly  a nonlinear one) in the pore fluid of rocks (e.g., Shapiro and  Dinske, 2009). At some locations the tectonic stress in the  Earth’s crust is close to a critical stress, causing brittle failure  of rocks. Increasing fluid pressure in such a reservoir causes  pressure in the connected pore and fracture space of rocks to  increase. Such an increase in the pore pressure consequently  causes a decrease of the effective normal stress. This leads  to sliding along pre-existing, favorably oriented, subcritical  cracks.
publisher: Society of Exploration Geophysicists
date: 2010-03
type: Article
type: NonPeerReviewed
identifier:   Shapiro, Serge A. and Dinske, Carsten and Langenbruch, Cornelius and Wenzel, Friedemann  (2010) Seismogenic index and magnitude probability of earthquakes induced during reservoir fluid stimulations.  The Leading Edge, 29 (3).  pp. 304-309. DOI: https://doi.org/10.1190/1.3353727 <https://doi.org/10.1190/1.3353727>     
relation: http://dx.doi.org/10.1190/1.3353727
relation: doi: 10.1190/1.3353727