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Multiple full volume CT scans gave spatially resolved maps of the changing porosity and saturation states throughout the experiment. Porosity and permeability decreased with MICP whilst capillary pressure was increased. Dissolution restored much of the original porosity, but not permeability nor capillary pressure. This lead to the conclusion that injection pathways were coupled with carbonate precipitation hence preferential flow paths sealed first and transport of the dissolution fluid was limited. Provided a high enough reduction in permeability can be achieved over a substantial volume, MICP may prove to be a durable bio-grout, even in acidic environments such as a carbon sequestration reservoir.
- microbially induced calcite precipitation
- Sporosarcina pasteurii
- carbon capture and storage (CCS)
- well sealing
- multiphase flow
- calcite precipitation
- calcite dissolution
- porous media
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Data for: "X-ray CT and multiphase flow characterization of a ‘bio-grouted’ sandstone core: the effect of dissolution on seal longevity"
Minto, J. (Creator), University of Strathclyde, 26 Sep 2017
Minto, J. M., El Mountassir, G. & Lunn, R. J., 25 Jun 2019, E3S Web of Conferences: 7th International Symposium on Deformation Characteristics of Geomaterials (IS-Glasgow 2019) . Tarantino, A. & Ibraim, E. (eds.). [Bloomsbury]: EDP Sciences, Vol. 92. 5 p. 11019
Research output: Chapter in Book/Report/Conference proceeding › Conference contribution bookOpen AccessFile11 Downloads (Pure)
Minto, J. M., MacLachlan, E., El Mountassir, G. & Lunn, R. J., 20 Dec 2016, In: Water Resources Research. 52, 11, p. 8827-8844 18 p.
Research output: Contribution to journal › Article › peer-reviewOpen AccessFile