Abstract
Intersecting faults are often ignored in the geomechanical simulation of induced seismicity. To investigate the effects of fault intersection and the resulting reservoir geometry on induced seismicity, caused, for instance, by gas extraction, we have developed 3D geomechanical models considering two intersecting normal faults and the surrounding horst structure. We simulate the stress field and the dynamic fault reactivation in a uniformly depleted reservoir. We observe that a smaller intersection angle increases the incremental Coulomb stress at the lower reservoir juxtaposition, thus changing the temporal rupture pattern of the seismic event. In our dynamic simulation, the rupture propagates from the main fault to the secondary fault. We conclude that the fault intersection has important effects on the induced seismicity and should be taken into account when evaluating the seismicity risk in a specific region.
Original language | English |
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Title of host publication | Third International Meeting for Applied Geoscience & Energy Expanded Abstracts |
Publisher | Society of Exploration Geophysicists |
Pages | 909-913 |
Number of pages | 5 |
Volume | 2023-August |
DOIs | |
Publication status | Published - 2023 |
Event | 3rd International Meeting for Applied Geoscience and Energy, IMAGE 2023 - Houston, United States Duration: 28 Aug 2023 → 1 Sept 2023 |
Publication series
Name | SEG Technical Program Expanded Abstracts |
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Publisher | Society of Exploration Geophysicists |
ISSN (Print) | 1052-3812 |
ISSN (Electronic) | 1949-4645 |
Conference
Conference | 3rd International Meeting for Applied Geoscience and Energy, IMAGE 2023 |
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Country/Territory | United States |
City | Houston |
Period | 28/08/23 → 1/09/23 |
Bibliographical note
Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-careOtherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.
Keywords
- geomechanical modelling
- fault intersection
- induced seismicty
- Groningen gas field
- seismic source