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|Title:||Effects of kaolinite in rocks on fines migration|
|Citation:||Journal of Natural Gas Science and Engineering, 2017; 45:243-255|
|Thomas Russell, Duy Pham, Mahdi Tavakkoli Neishaboor, Alexander Badalyan, Aron Behr, Luis Genolet, Patrick Kowollik, Abbas Zeinijahromi, Pavel Bedrikovetsky|
|Abstract:||A laboratory study has been undertaken on the effect of permeability variation during low-salinity water injection as a function of kaolinite content in the rock. A novel methodology of preparing artificial sand-packs with a given kaolinite fraction has been established. Sequential injections of aqueous solutions in order of decreasing salinity were performed in six sand-packs with different kaolinite fractions varying from 0 to 10 wt percents. The permeability declined by a factor of 9-54 during salinity alteration from typical seawater conditions to deionized water. A new phenomenon of permeability increase during injection of high salinity water into low kaolinite content rocks has been observed. The phenomenon is explained by re-attachment of the mobilised fines at high salinities. As a result of the low-salinity water floods, only 0.2-1.6% of the initial kaolinite fraction was recovered.|
|Keywords:||Fines migration; formation damage; permeability; laboratory study; particle detachment; porous media|
|Rights:||© 2017 Elsevier B.V. All rights reserved.|
|Appears in Collections:||Australian School of Petroleum publications|
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