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Induced Seismicity in Reservoirs: Stress Makes the Difference

Urheber*innen

Müller,  B.
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Schilling,  F.
External Organizations;

Röckel,  T.
External Organizations;

/persons/resource/heidbach

Heidbach,  O.
2.6 Seismic Hazard and Stress Field, 2.0 Geophysics, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum;

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Zitation

Müller, B., Schilling, F., Röckel, T., Heidbach, O. (2018): Induced Seismicity in Reservoirs: Stress Makes the Difference. - Erdöl Erdgas Kohle, 1/2018, 33-37.
https://doi.org/10.19225/180106


Zitierlink: https://gfzpublic.gfz-potsdam.de/pubman/item/item_3081889
Zusammenfassung
Fluid withdrawal and fluid injection can lead to perceptible induced seismicity. This is generally explained by the reduction of effective stresses. It is shown that poroelastic coupling of pore pressure and stresses provide a geomechanical explanation for depletion induced seismicity as well as for the observed rotation of the stress tensor, the reduction of the total minimum horizontal stress with depletion, and the variation of tectonic styles during injection. Generic modelling is used to compute the changes of the stress state for injection and production and to identify the orientation of critically stressed faults. For geothermal circulation with a dublette system a geomechanically-based recommendation for the positioning of injection and production wells with respect to tectonic regime and stress orientation, in order to reduce induced seismicity is provided.