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http://dx.doi.org/10.7843/kgs.2019.35.4.37

Study of Kaolin Particle Migration and Clogging Using a Micromodel  

Ha, Minkyu (School of Civil Engrg., Chungbuk National Univ.)
Jung, Jongwon (School of Civil Engrg., Chungbuk National Univ.)
Publication Information
Journal of the Korean Geotechnical Society / v.35, no.4, 2019 , pp. 37-42 More about this Journal
Abstract
Hydrate dissociation is required to produce methane, which generates both water and methane. Thus, multiphase fluid flow and desalination are expected during methane production, which causes the fine migration and clogging in pores. The goal of this study is to explore the effects of both multiphase fluid flow and desalination on the migration and clogging of kaolin particles as typical fines. The results are as follows : (1) the larger the pore size is, the more mounting the critical clogging concentration is, (2) kaolin particles are more easily clustering and clogging in deionized water than salty water, and (3) the critical clogging concentration of kaolin in multiphase fluid flow is lower than in singlephase fluid flow. Therefore, clustering and clogging of kaolin within pore occur easily due to desalination and multiphase fluid flow when methane is produced from hydrates, and the efficiency of methane production is expected to decrease due to the degradation of permeability coefficient.
Keywords
Hydrate; Fine particle; Singlephase fluid flow; Multiphase fluid flow; Migration; Clustering; Clogging;
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