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dc.contributor.author
Zappone, Alba
dc.contributor.author
Rinaldi, Antonio Pio
dc.contributor.author
Grab, Melchior
dc.contributor.author
Wenning, Quinn
dc.contributor.author
Roques, Clément
dc.contributor.author
Madonna, Claudio
dc.contributor.author
Obermann, Anne
dc.contributor.author
Bernasconi, Stefano M.
dc.contributor.author
Soom, Florian
dc.contributor.author
Cook, Paul
dc.contributor.author
Guglielmi, Yves
dc.contributor.author
Nussbaum, Christophe
dc.contributor.author
Giardini, Domenico
dc.contributor.author
Wiemer, Stefan
dc.date.accessioned
2021-02-25T21:47:28Z
dc.date.available
2021-01-12T14:38:21Z
dc.date.available
2021-02-25T21:38:26Z
dc.date.available
2021-02-25T21:47:28Z
dc.date.issued
2020-08-11
dc.identifier.other
10.5194/se-2020-100
en_US
dc.identifier.uri
http://hdl.handle.net/20.500.11850/461768
dc.identifier.doi
10.3929/ethz-b-000461768
dc.description.abstract
The success of geological carbon storage depends on the assurance of a permanent confinement of the injected CO2 in the storage formation at depth. One of the critical elements of the safekeeping of CO2 is the sealing capacity of the caprock overlying the storage formation, despite faults and/or fractures, which may occur in it. In this work, we present an ongoing injection experiment performed in a fault hosted in clay at the Mont Terri underground rock laboratory (NW Switzerland). The experiment aims at improving our understanding on the main physical and chemical mechanisms controlling i) the migration of CO2 through a fault damage zone, ii) the interaction of the CO2 with the neighbouring intact rock, and iii) the impact of the injection on the transmissivity in the fault. To this end, we inject a CO2-saturated saline water in the top of a 3 m think fault in the Opalinus Clay, a clay formation that is a good analogue of common caprock for CO2 storage at depth. The mobility of the CO2 within the fault is studied at decameter scale, by using a comprehensive monitoring system. Our experiment aims to the closing of the knowledge gap between laboratory and reservoir scales. Therefore, an important aspect of the experiment is the decameter scale and the prolonged duration of observations over many months. We collect observations and data from a wide range of monitoring systems, such as a seismic network, pressure temperature and electrical conductivity sensors, fiber optics, extensometers, and an in situ mass spectrometer for dissolved gas monitoring. The observations are complemented by laboratory data on collected fluids and rock samples. Here we show the details of the experimental concept and installed instrumentation, as well as the first results of the preliminary characterization. Analysis of borehole logging allow identifying potential hydraulic transmissive structures within the fault zone. A preliminary analysis of the injection tests helped estimating the transmissivity of such structures within the fault zone, as well as the pressure required to mechanically open such features. The preliminary tests did not record any induced microseismic events. Active seismic tomography enabled a sharp imaging the fault zone. Weniger anzeigen
en_US
dc.format
application/pdf
en_US
dc.language.iso
en
en_US
dc.publisher
Copernicus
en_US
dc.rights.uri
http://creativecommons.org/licenses/by/4.0/
dc.subject
CO2 storage
en_US
dc.subject
CO2 injection
en_US
dc.subject
Caprock integrity
en_US
dc.subject
Site monitoring
en_US
dc.subject
In-situ decameter scale experiment
en_US
dc.title
Fault sealing and caprock integrity for CO2 storage: an in-situ injection experiment
en_US
dc.type
Journal Article
dc.rights.license
Creative Commons Attribution 4.0 International
ethz.journal.title
Journal of Geophysical Research: Solid Earth Disscussion
ethz.size
51 p.
en_US
ethz.version.deposit
publishedVersion
en_US
ethz.publication.place
Göttingen
en_US
ethz.publication.status
published
en_US
ethz.leitzahl
ETH Zürich::00002 - ETH Zürich::00003 - Schulleitung und Dienste::00022 - Bereich VP Forschung / Domain VP Research::02818 - Schweiz. Erdbebendienst (SED) / Swiss Seismological Service (SED)
en_US
ethz.leitzahl
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02330 - Dep. Erdwissenschaften / Dep. of Earth Sciences::02704 - Geologisches Institut / Geological Institute::03465 - Löw, Simon (emeritus) / Löw, Simon (emeritus)
en_US
ethz.leitzahl.certified
ETH Zürich::00002 - ETH Zürich::00003 - Schulleitung und Dienste::00022 - Bereich VP Forschung / Domain VP Research::02818 - Schweiz. Erdbebendienst (SED) / Swiss Seismological Service (SED)
en_US
ethz.leitzahl.certified
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02330 - Dep. Erdwissenschaften / Dep. of Earth Sciences::02704 - Geologisches Institut / Geological Institute::03465 - Löw, Simon (emeritus) / Löw, Simon (emeritus)
ethz.identifier.orcidWorkCode
78642428
ethz.date.deposited
2021-01-12T14:38:29Z
ethz.source
FORM
ethz.eth
yes
en_US
ethz.availability
Open access
en_US
ethz.rosetta.installDate
2021-02-25T21:47:39Z
ethz.rosetta.lastUpdated
2022-03-29T05:28:28Z
ethz.rosetta.versionExported
true
ethz.COinS
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