Articles | Volume 12, issue 2
Solid Earth, 12, 319–343, 2021
https://doi.org/10.5194/se-12-319-2021
Solid Earth, 12, 319–343, 2021
https://doi.org/10.5194/se-12-319-2021

Research article 05 Feb 2021

Research article | 05 Feb 2021

Fault sealing and caprock integrity for CO2 storage: an in situ injection experiment

Alba Zappone et al.

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Cited articles

Aagaard, B. K., Skurtveit E., and Wangen, M.: Critical Factors for Considering CO2 Injectivity in Saline Aquifers, FME SUCCESS Synthesis report Volume 3, edited by: Miri, R. and Hellevang, H., pp. 24, 2018. 
Alemu, B. L., Aagaard, P., Munz, I. A., and Skurtveit, E.: Caprock interaction with CO2: A laboratory study of reactivity of shale with supercritical CO2 and brine, Appl. Geochem., 26, 1975–1989, 2011. 
Al Hosni, M., Vialle, S., Gurevich, B., and Daley, T. M.: Estimation of rock frame weakening using time-lapse crosswell: The Frio brine pilot project, Geophysics, 81, B235–B245, 2016. 
Amann, F., Wild, K. M., Loew, S., Yong, S., Thoeny, R., and Frank, E.: Geomechanical behaviour of Opalinus Clay at multiple scales: results from Mont Terri rock laboratory (Switzerland), Swiss J. Geosci., 110, 151–171, 2017. 
Blaesi, H. R., Moeri, A., and Bossart, P.: Results of the Phase 1 drilling campaign, Mont Terri Technical Report, TR96-01, Federal Office of Topography (swisstopo), Wabern, Switzerland, 1996. 
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Short summary
The success of the geological storage of carbon dioxide is linked to the availability at depth of a capable reservoir and an impermeable caprock. The sealing capacity of the caprock is a key parameter for long-term CO2 containment. Faults crosscutting the caprock might represent preferential pathways for CO2 to escape. A decameter-scale experiment on injection in a fault, monitored by an integrated network of multiparamerter sensors, sheds light on the mobility of fluids within the fault.