Deep Fracture Zone Reactivation During CO2 Storage at In Salah (Algeria) - A Review of Recent Modeling Studies
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Date
2019
Publication Type
Conference Paper
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yes
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Abstract
We present a review of numerical studies aimed at understanding the conditions leading to the reactivation of a deep fracture zone, as well as thermal effects, at the In Salah CO2 Storage Project. Numerical simulations carried out with the TOUGH-FLAC coupled fluid flow and geomechanics simulator show that a deep fracture opening can explain the observed deformation at the ground surface. Accounting for a fractured reservoir with stress-dependent permeability allows for a better match of the recorded wellhead pressure. Simulation results including thermal effects show that cooling becomes more significant for longterm storage, causing a decrease in fracture stability.
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Publication status
published
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Book title
Energy Geotechnics: SEG-2018
Journal / series
Volume
Pages / Article No.
394 - 401
Publisher
Springer
Event
2nd International Symposium on Energy Geotechnics (SEG)
Edition / version
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Date collected
Date created
Subject
Deep Fracture Zones; Fracture Zone; Geomechanical Simulation; Coupled Fluid Flow; Stress-dependent Permeability
Organisational unit
02818 - Schweiz. Erdbebendienst (SED) / Swiss Seismological Service (SED)
Notes
Funding
160555 - To induce or not to induce: an open problem. Study on injection-induced seismicity for GeoEnergy applications, from lab to field scale (SNF)