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Geomechanical simulation of the injection of CO2 into saline aquifers with respect to risk assessment

Authors

Adams,  M.
External Organization;

Feinendegen,  M.
External Organization;

Ziegler,  M.
External Organization;

/persons/resource/kempka

Kempka,  Thomas
5.3 Hydrogeology, 5.0 Earth Surface Processes, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum;

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Citation

Adams, M., Feinendegen, M., Ziegler, M., Kempka, T. (2014): Geomechanical simulation of the injection of CO2 into saline aquifers with respect to risk assessment. - In: Alejano, L., Perucho, A., Olalla, C. (Eds.), Rock Engineering and Rock Mechanics: Structures in and on Rock Masses; Proceedings of EUROCK 2014, ISRM European Regional Symposium, Leiden : CRC Press/Balkema, 1305-1310.
https://doi.org/10.1201/b16955-227


Cite as: https://gfzpublic.gfz-potsdam.de/pubman/item/item_432933
Abstract
The injection of CO2 into a reservoir can influence the initial stress state significantly due to changes in pore pressures. As a result, the integrity of the cap rock can be affected and existing faults may be reactivated. To predict and prevent such negative impacts a risk assessment is needed. This paper deals exclusively with the geomechanical module of the CO2 RINA project. The aim of this project is to develop a general integrative risk assessment approach for the storage of CO2 in geological formation. First numerical geomechanical simulations of 25 scenarios show the influence of the flowing liquid's density, its dynamic viscosity and the intrinsic permeabilities of the reservoir and the fault on the hydraulic aperture of a fault. The maximum hydraulic aperture has been determined between 1.4 and 3.4 mm. © 2014 Taylor & Francis Group, London.