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<publisher>HAL CCSD</publisher>
<title lang=en>Rheological Characterization of Olivine Slurries, Sheared Under CO2 Pressure</title>
<creator>Mahaut, Fabien</creator>
<creator>Gauthier, Georges</creator>
<creator>Gouze, Philippe</creator>
<creator>Luquot, Linda</creator>
<creator>Salin, Dominique</creator>
<creator>Martin, Jerome</creator>
<contributor>Fluides, automatique, systèmes thermiques (FAST) ; Université Paris-Sud - Paris 11 (UP11) - Centre National de la Recherche Scientifique (CNRS)</contributor>
<contributor>trans ; 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>
<contributor>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)</contributor>
<description>International audience</description>
<source>Environmental Progress & Sustainable Energy</source>
<identifier>hal-01054131</identifier>
<identifier>https://hal.archives-ouvertes.fr/hal-01054131</identifier>
<source>https://hal.archives-ouvertes.fr/hal-01054131</source>
<source>Environmental Progress & Sustainable Energy, 2014, 33 (2), pp.572-580. 〈10.1002/ep.11826〉</source>
<identifier>DOI : 10.1002/ep.11826</identifier>
<relation>info:eu-repo/semantics/altIdentifier/doi/10.1002/ep.11826</relation>
<language>en</language>
<subject lang=en>carbon sequestration</subject>
<subject lang=en>mineral carbonation</subject>
<subject lang=en>slurry injection</subject>
<subject lang=en>well remediation</subject>
<subject lang=en>Bingham plastic</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>The injection of reactive mineral suspensions is a possible process to either reinforce or seal wells in geologic carbon sequestration sites. Among others, olivine slurries could be used as CO2-triggered cements, as they carbonate under the thermodynamic conditions of deep storage. However, injection of such slurries requires to control their initial fluidity and its evolution during the displacement. For this purpose, we have characterized the rheological evolution of olivine suspensions, of particle sizes 1−10 μm, sheared at 100 s−1, in the ranges of 10−40% for the volume fractions, 20−50 bars for the CO2 pressure, and 60-110°C for the temperature. The apparent viscosity, measured at 100 s−1, increases exponentially, with a characteristic time ranging from less than 1 h to more than 10 h, and decreasing with olivine concentration, CO2 pressure, and temperature. Moreover, a careful characterization of the slurry rheology carried out in the initial stages of slow evolution, shows that the slurry obeys a Bingham plastic law, with a yield stress ΣB, and a Bingham viscosity µB increasing from 1 to 20 Pa and from 4 to 110 mPa s, respectively, when the olivine volume fraction φ is increased from 10 to 30%. Such variations can be accounted by classical models (Wildemuth and Williams [1984]: Rheologica Acta, 23,627-635, Krieger [1972]: Advances in Colloid and Interface Science, 3, 111-136).</description>
<date>2014-07</date>
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