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AuthorNishad, Safna
AuthorAl-Raoush, Riyadh
Available date2020-10-22T07:00:23Z
Publication Date2020
Publication NameQatar University Annual Research Forum & Exhibition 2020
CitationNishad S., AlRaoush R., "Micromodel Study on Pore Scale Mechanisms Associated with Permeability Impairment in Porous Media", Qatar University Annual Research Forum and Exhibition (QUARFE 2020), Doha, 2020, https://doi.org/10.29117/quarfe.2020.0071
URIhttps://doi.org/10.29117/quarfe.2020.0071
URIhttp://hdl.handle.net/10576/16606
AbstractRecently, researchers are attracted towards the gas production from hydrate bearing sediments considering its abundance in marine continental margins and persisting demand for alternate energy. Dissociation of hydrate into gas and water is the preliminary technique for gas production in hydrate bearing sediments. Expanded fluid volume and gas pressure upon dissociation detach the fines from the grain surface and result in pore throat entrapment. Migration of fines associated with gas flow greatly influence the alteration of permeability of the sediment by clogging pore throats in the flow path. A pore-scale visualization study was implemented to provide a clear insight into the actual mechanisms associated with mobilization and clogging of fines during two-phase flow through a microfluidic chip. Carboxylate modified polystyrene latex particles deposited in the porous media were migrated during drainage with CO2 gas. The detachment of fine particles from the grain surfaces was observed and were retained on the new interface; gas-water interface. The images and videos captured during the experiment was helpful in observing additional pore scale mechanisms responsible for permeability impairment in the porous media. Interface pinning, deformation and resistance to coalescence was found to be other mechanisms in addition to pore clogging.
Languageen
PublisherQatar University Press
SubjectPermeability; Porous media; Fine migration; Pore-scale mechanisms
TitleMicromodel Study on Pore Scale Mechanisms Associated with Permeability Impairment in Porous Media
TypePoster
dc.accessType Open Access


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