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Evaluating Micro-Seismic Events Triggered by Reservoir Operations at the Geothermal Site of Groß Schönebeck (Germany)

Evaluating Micro-Seismic Events Triggered by Reservoir Operations at the Geothermal Site of Groß... This study aims at evaluating the spatial and temporal distribution of 26 micro-seismic events which were triggered by hydraulic stimulation at the geothermal site of Groß Schönebeck (Germany). For this purpose, the alteration of the in-situ stress state and the related change of slip tendency for existing fault zones due to stimulation treatments and reservoir operations is numerical simulated. Changes in slip tendency can potentially lead to reactivation of fault zones, the related movement can lead to the occurrence of seismic events. In the current numerical study, results obtained based on the thermal–hydraulic–mechanical coupled simulation are compared to field observations. In particular, the study focuses on describing the fault reactivation potential: (1) under in-situ stress conditions; (2) during a waterfrac stimulation treatment; and (3) during a projected 30 years production and injection period at the in-situ geothermal test-site Groß Schönebeck. The in-situ stress state indicates no potential for fault reactivation. During a waterfrac stimulation treatment, micro-seismic events were recorded. Our current evaluation shows an increase of slip tendency during the treatment above the failure level in the direct vicinity of the micro-seismic events. During the projected production and injection period, despite increased thermal stress, the values for slip tendency are below the threshold for fault reactivation. Based on these results, and to prove the applied method to evaluate the observed micro-seismic events, a final discussion is opened. This includes the in-situ stress state, the role of pre-existing fault zones, the adopted criterion for fault reactivation, and a 3D rock failure criterion based on true triaxial measurements. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Rock Mechanics and Rock Engineering Springer Journals

Evaluating Micro-Seismic Events Triggered by Reservoir Operations at the Geothermal Site of Groß Schönebeck (Germany)

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Publisher
Springer Journals
Copyright
Copyright © 2018 by Springer-Verlag GmbH Austria, part of Springer Nature
Subject
Earth Sciences; Geophysics/Geodesy; Civil Engineering
ISSN
0723-2632
eISSN
1434-453X
DOI
10.1007/s00603-018-1521-2
Publisher site
See Article on Publisher Site

Abstract

This study aims at evaluating the spatial and temporal distribution of 26 micro-seismic events which were triggered by hydraulic stimulation at the geothermal site of Groß Schönebeck (Germany). For this purpose, the alteration of the in-situ stress state and the related change of slip tendency for existing fault zones due to stimulation treatments and reservoir operations is numerical simulated. Changes in slip tendency can potentially lead to reactivation of fault zones, the related movement can lead to the occurrence of seismic events. In the current numerical study, results obtained based on the thermal–hydraulic–mechanical coupled simulation are compared to field observations. In particular, the study focuses on describing the fault reactivation potential: (1) under in-situ stress conditions; (2) during a waterfrac stimulation treatment; and (3) during a projected 30 years production and injection period at the in-situ geothermal test-site Groß Schönebeck. The in-situ stress state indicates no potential for fault reactivation. During a waterfrac stimulation treatment, micro-seismic events were recorded. Our current evaluation shows an increase of slip tendency during the treatment above the failure level in the direct vicinity of the micro-seismic events. During the projected production and injection period, despite increased thermal stress, the values for slip tendency are below the threshold for fault reactivation. Based on these results, and to prove the applied method to evaluate the observed micro-seismic events, a final discussion is opened. This includes the in-situ stress state, the role of pre-existing fault zones, the adopted criterion for fault reactivation, and a 3D rock failure criterion based on true triaxial measurements.

Journal

Rock Mechanics and Rock Engineering – Springer Journals

Published: May 29, 2018

References

  • Induced seismicity during the stimulation of a geothermal HFR reservoir in the Cooper Basin, Australia
    Baisch, S; Weidler, R; Voros, R; Wyborn, D; Graaf, L
  • Investigation of fault mechanisms during geothermal reservoir stimulation experiments in the Cooper Basin, Australia
    Baisch, S; Voros, R; Weidler, R; Wyborn, D
  • A numerical model for fluid injection induced seismicity at Soultz-sous-Forêts
    Baisch, S; Voros, R; Rothert, E; Stang, H; Jung, R; Schellschmidt, R
  • In situ stresses in sedimentary rocks (Part 2): applications of stress measurements
    Bell, JS
  • Impact of poroelastic response of sandstones on geothermal power production
    Blöcher, G; Zimmermann, G; Milsch, H
  • 3D numerical modeling of hydrothermal processes during the lifetime of a deep geothermal reservoir
    Blöcher, MG; Zimmermann, G; Moeck, I; Brandt, W; Hassanzadegan, A; Magri, F
  • Evaluation of three exploitation concepts for a deep geothermal system in the North German Basin
    Blöcher, G; Cacace, M; Reinsch, T; Watanabe, N
  • Hydraulic history and current state of the deep geothermal reservoir Groß Schönebeck
    Blöcher, G; Reinsch, T; Henninges, J; Milsch, H; Regenspurg, S; Kummerow, J; Francke, H; Kranz, S; Saadat, A; Zimmermann, G; Huenges, E
  • Friction of rocks
    Byerlee, J
  • Flexible parallel implicit modelling of coupled thermal–hydraulic–mechanical processes in fractured rocks
    Cacace, M; Jacquey, AB
  • Injection tests at the EGS reservoir of Soultz-sous-Forêts. Seismic response of the GPK4 stimulations
    Calò, M; Dorbath, C; Frogneux, M
  • A failure criterion for rocks based on true triaxial testing
    Chang, C; Haimson, B
  • Lade and modified lade 3D rock strength criteria
    Fontoura, SAB
  • Earthquakes induced by the stimulation of an enhanced geothermal system below basel (Switzerland)
    Deichmann, N; Giardini, D
  • Identification of faults activated during the stimulation of the basel geothermal project from cluster analysis and focal mechanisms of the larger magnitude events
    Deichmann, N; Kraft, T; Evans, KF
  • Seismic response of the fractured and faulted granite of Soultz-sous-Forêts (France) to 5 km deep massive water injections
    Dorbath, L; Cuenot, N; Genter, A; Frogneux, M
  • Injection-induced earthquakes
    Ellsworth, WL
  • Stress regimes in the lithosphere
    Engelder, T
  • More than cloud: new techniques for characterizing reservoir structure using induced seismicity
    Fehler, M; Jupe, A; Asanuma, H
  • World stress map of the earth: a key to tectonic processes and technological applications
    Fuchs, K; Müller, B
  • MOOSE: a parallel computational framework for coupled systems of nonlinear equations
    Gaston, D; Newman, C; Hansen, G; Lebrun-Grandié, D
  • Induced seismicity in geothermal reservoirs: a review of forecasting approaches
    Gaucher, E; Schoenball, M; Heidbach, O; Zang, A; Fokker, PA; Wees, JD; Kohl, T
  • Geothermal quake risks must be faced
    Giardini, D
  • Encyclopedia of solid earth geophysics
    Gupta, H
  • Forward modelling of seismicity rate changes in georeservoirs with a hybrid geomechanical–statistical prototype model
    Hakimhashemi, AH; Schoenball, M; Heidbach, O; Zang, A; Grünthal, G
  • Forward induced seismic hazard assessment: application to a synthetic seismicity catalogue from hydraulic stimulation modelling
    Hakimhashemi, AH; Yoon, JS; Heidbach, O; Zang, A; Grünthal, G
  • Characterisation of the Basel 1 enhanced geothermal system
    Häring, MO; Schanz, U; Ladner, F; Dyer, BC
  • The denver earthquakes
    Healy, JH; Rubey, WW; Griggs, DT; Raleigh, CB
  • Numerical investigation of thermoelastic effects on fault slip tendency during injection and production of geothermal fluids
    Jacquey, AB; Cacace, M; Blöcher, G; Scheck-Wenderoth, M
  • Thermo-poroelastic numerical modelling for enhanced geothermal system performance: case study of the Groß Schönebeck reservoir
    Jacquey, AB; Cacace, M; Blöcher, G; Watanabe, N; Huenges, E; Scheck-Wenderoth, M
  • Fundamentals of rock mechanics
    Jaeger, J; Cook, NG; Zimmerman, R
  • Geomechanical simulation of the stress tensor rotation caused by injection of cold water in a deep geothermal reservoir
    Jeanne, P; Rutqvist, J; Dobson, PF; Garcia, J; Walters, M; Hartline, C; Borgia, A
  • Effective and sustainable hydraulic fracturing
    Jung, R
  • Microseismicity induced during fluid-injection: a case study from the geothermal site at Groß Schönebeck and North German Basin
    Kwiatek, G; Bohnhoff, M; Dresen, G; Schulze, A; Schulte, T; Zimmermann, G; Huenges, E
  • High-resolution analysis of seismicity induced at Berlín geothermal field, El Salvador
    Kwiatek, G; Bulut, F; Bohnhoff, M; Dresen, G
  • Mohr–Coulomb failure criterion. The ISRM suggested methods for rock characterization, testing and monitoring: 2007–2014
    Labuz, JF; Zang, A
  • The Kaiser effect in rocks: principles and stress estimation techniques
    Lavrov, A
  • Seismic monitoring in mines
    Mendecki, A
  • Slip tendency analysis, fault reactivation potential and induced seismicity in a deep geothermal reservoir
    Moeck, I; Kwiatek, G; Zimmermann, G
  • Slip-tendency analysis and fault reactivation
    Morris, A; Ferrill, DA; Henderson, DB
  • An exact effective stress law for elastic deformation of rock with fluids
    Nur, A; Byerlee, JD
  • Potential of ambient seismic noise techniques to monitor the St. Gallen geothermal site (Switzerland)
    Obermann, A; Kraft, T; Larose, E; Wiemer, S
  • Three-dimensional failure criteria based on the Hoek–Brown criterion
    Priest, S
  • Induced seismicity in hydrocarbon fields. Advances in geophysics
    Suckale, J
  • Pore pressure diffusion and the mechanism of reservoir-induced seismicity
    Talwani, P; Acree, S
  • Monitoring induced seismicity, vol Pageoph topical volumes
    Trifu, CIE
  • Stress field of the earth’s crust
    Zang, A; Stephansson, O
  • Analysis of induced seismicity in geothermal reservoirs—an overview
    Zang, A; Oye, V; Jousset, P; Deichmann, N; Gritto, R; McGarr, A; Majer, E; Bruhn, D
  • Cyclic waterfrac stimulation to develop an enhanced geothermal system (EGS) —conceptual design and experimental results
    Zimmermann, G; Moeck, I; Blöcher, G
  • Reservoir geomechanics
    Zoback, MD
  • Reservoir geomechanics
    Zoback, MD
  • Earthquake triggering and large-scale geologic storage of carbon dioxide
    Zoback, MD; Gorelick, SM