Earthquakes Induced by the Stimulation of an Enhanced Geothermal System below Basel (Switzerland)

2009 ◽  
Vol 80 (5) ◽  
pp. 784-798 ◽  
Author(s):  
N. Deichmann ◽  
D. Giardini
Keyword(s):  
Geothermal System ◽  
Enhanced Geothermal System ◽  
Stimulation Of

scholarly journals Supplementary material to "Seismicity during and after stimulation of a 6.1 km deep Enhanced Geothermal System in Helsinki, Finland"

2020 ◽  
Author(s):  
Maria Leonhardt ◽  
Grzegorz Kwiatek ◽  
Patricia Martínez-Garzón ◽  
Marco Bohnhoff ◽  
Tero Saarno ◽  
...  
Keyword(s):  
Geothermal System ◽  
Enhanced Geothermal System ◽  
Supplementary Material ◽  
Stimulation Of

scholarly journals Use of Mohr Diagrams to Predict Fracturing in a Potential Geothermal Reservoir

Geosciences ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 501
Author(s):  
D.C.P. Peacock ◽  
David J. Sanderson ◽  
Bernd Leiss
Keyword(s):  
Mechanical Properties ◽  
Fluid Flow ◽  
Geothermal Reservoir ◽  
Rock Properties ◽  
Geothermal System ◽  
Enhanced Geothermal System ◽  
Mechanical Modelling ◽  
Different Types ◽  
Stimulation Of

Inferences have to be made about likely structures and their effects on fluid flow in a geothermal reservoir at the pre-drilling stage. Simple mechanical modelling, using reasonable ranges of values for rock properties, stresses and fluid pressures, is used here to predict the range of possible structures that are likely to exist in the sub-surface and that may be generated during stimulation of a potential geothermal reservoir. In particular, Mohr diagrams are used to show under what fluid pressures and stresses different types and orientations of fractures are likely to be reactivated or generated. The approach enables the effects of parameters to be modelled individually, and for the types and orientations of fractures to be considered. This modelling is useful for helping geoscientists consider, model, and predict the ranges of mechanical properties of rock, stresses, fluid pressures, and the resultant fractures that are likely to occur in the sub-surface. Here, the modelling is applied to folded and thrusted greywackes and slates, which are planned to be developed as an Enhanced Geothermal System beneath Göttingen.

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