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<identifier>oai:HAL:hal-00857555v1</identifier>
<datestamp>2018-01-11</datestamp>
<setSpec>type:ART</setSpec>
<setSpec>subject:sdu</setSpec>
<setSpec>subject:phys</setSpec>
<setSpec>subject:sde</setSpec>
<setSpec>collection:CNRS</setSpec>
<setSpec>collection:SDE</setSpec>
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<publisher>HAL CCSD</publisher>
<title lang=en>Hydro-dynamically controlled alteration of fractured Portland cements flowed by CO2-rich brine</title>
<creator>Luquot, Linda</creator>
<creator>ABDOULGHAFOUR, Halidi</creator>
<creator>Gouze, Philippe</creator>
<contributor>Transferts en milieux poreux ; Géosciences Montpellier ; Université des Antilles et de la Guyane (UAG) - Institut national des sciences de l'Univers (INSU - CNRS) - Université de Montpellier (UM) - Centre National de la Recherche Scientifique (CNRS) - Université des Antilles et de la Guyane (UAG) - Institut national des sciences de l'Univers (INSU - CNRS) - Université de Montpellier (UM) - Centre National de la Recherche Scientifique (CNRS)</contributor>
<source>ISSN: 1750-5836</source>
<source>International Journal of Greenhouse Gas Control</source>
<publisher>Elsevier</publisher>
<identifier>hal-00857555</identifier>
<identifier>https://hal.archives-ouvertes.fr/hal-00857555</identifier>
<source>https://hal.archives-ouvertes.fr/hal-00857555</source>
<source>International Journal of Greenhouse Gas Control, Elsevier, 2013, 16, pp.167-179. 〈10.1016/j.ijggc.2013.04.002〉</source>
<identifier>DOI : 10.1016/j.ijggc.2013.04.002</identifier>
<relation>info:eu-repo/semantics/altIdentifier/doi/10.1016/j.ijggc.2013.04.002</relation>
<language>en</language>
<subject lang=en>Cement alteration</subject>
<subject lang=en>CO2 storage</subject>
<subject lang=en>Flow-through experiments</subject>
<subject>[SDU.STU.GP] Sciences of the Universe [physics]/Earth Sciences/Geophysics [physics.geo-ph]</subject>
<subject>[PHYS.PHYS.PHYS-GEO-PH] Physics [physics]/Physics [physics]/Geophysics [physics.geo-ph]</subject>
<subject>[SDE.MCG] Environmental Sciences/Global Changes</subject>
<type>info:eu-repo/semantics/article</type>
<type>Journal articles</type>
<description lang=en>Deficient sealing in the well cement plugs and annulus due to mechanical fracturing is an important risk of CO2 leakage from the reservoir to others permeable layers and the surface. Such situation was reproduced at laboratory scale in order to determine the hydro-chemical control on the fracture permeability. Specifically, we investigated the effect of CO2 rich-brine flowing through fractured Portland cements at T = 60 °C and P = 10 MPa and variable flow rates. We showed that carbonation process is dominant and induces permeability decrease and leakage mitigation for extremely low flow rate whereas for high flow rate injection the permeability remains constant due to the precipitation of a low density secondary Si-rich phase which maintains the initial fracture aperture. At intermediate flow rate the hydraulic aperture can increase due to the densification of the material triggered by the net precipitation of low porosity calcite. These results emphasize that more complex behaviors than those considered from batch experiments may take place in the vicinity of flowing fractures. Specifically, the redissolution of the neoformed calcite as well as the development of amorphous phases, both controlled by the CO2-rich brine renewing rate in the fracture may prevent the healing fracture.</description>
<date>2013-08</date>
</dc>
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