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  Numerical investigation of hydraulic stimulation and related induced seismicity in Pohang fractured geothermal reservoir, South Korea

Farkas, M. P., Hofmann, H., Zimmermann, G., Zang, A., Bethmann, F., Meier, P. (2019): Numerical investigation of hydraulic stimulation and related induced seismicity in Pohang fractured geothermal reservoir, South Korea - Abstracts, 13th EURO-Conference on Rock Physics and Geomechanics (Potsdam 2019).

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Item Permalink: https://gfzpublic.gfz-potsdam.de/pubman/item/item_4651901 Version Permalink: https://gfzpublic.gfz-potsdam.de/pubman/item/item_4651901_3
Genre: Conference Paper

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https://doi.org/10.2312/GFZ.4.8.2019.017 (Supplementary material)
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Conference proceedings

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 Creators:
Farkas, Marton Pal1, Author              
Hofmann, Hannes2, Author              
Zimmermann, G.2, Author              
Zang, A.1, Author              
Bethmann, Falko3, Author
Meier, Peter3, Author
Affiliations:
12.6 Seismic Hazard and Risk Dynamics, 2.0 Geophysics, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum, ou_146032              
24.8 Geoenergy, 4.0 Geosystems, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum, ou_146039              
3External Organizations, ou_persistent22              

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 Abstract: In this study, we investigate numerically the hydro-mechanical behaviour of fractured crystalline rock due to hydraulic stimulations at the Pohang Enhanced Geothermal site in South Korea. Several hydraulic stimulations were performed in wells PX-1 and PX-2. Based on the well test analysis of these stimulations the fracturing mechanism is associated with hydro-shearing in well PX-1. We use the commercial code FracMan (Golder Associates) that enables studying dynamic hydro-mechanical coupled processes in fractured media in three dimensions combining the finite element method with a discrete fracture network. The software is used to simulate fluid pressure perturbation and related stress redistribution at fractures during hydraulic stimulation in PX-1. This can be combined with critical stress analysis on fracture surface to derive location and magnitude of microseismic events. The calibrated reservoir model allows different injection strategies to be tested. Ahead of future field applications, this methodology may be applied at other sites to optimize stimulation strategies, if sufficient data are available.

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Language(s): eng - English
 Dates: 2019
 Publication Status: Finally published
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: GFZPOF: p3 PT4 Natural Hazards
GFZPOF: p3 PT5 Georesources
 Degree: -

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Title: 13th EURO-Conference on Rock Physics and Geomechanics
Place of Event: Potsdam
Start-/End Date: 2019-09-02 - 2019-09-06

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Title: Abstracts
Source Genre: Proceedings
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