中国科学院大学学报2017，Vol.34Issue(2)：251-258,8.DOI:10.7523/j.issn.2095-6134.2017.02.020
微小颗粒在多孔介质中运移的实验研究
Experimental study of migration of micro particles in porous media
摘要
Abstract
In this work,we carried out experimental study on migration of micro particles in porous media,taking physical clogging in sandstone during geothermal reinjection as research background.Underground aquifer was simulated by filling the cylindrical pipe with spherical glass beads.Particle deposition in the porous and at the fluid/porous media interace was respectively analyzed,with the particle size dp values of 12.96 and 22.81 μm,porous medium particle diameter Dp values of 408.9 and 659.2 μm,and carrier fluid concentrations ranging from 0.3 to 2.0 g/L.The resuhs shows that the amount of particles deposited inside the porous medium is much larger than at the interface of porous medium when dp =12.96 μm.However,when dp =22.81 μm,there is little difference between the two depositions as C ＜ 0.3 g/L,whereas this difference increases as the concentration of the carrier fluid increases,indicating that more particles deposited at the fluid/porous medium interfaces and the " sieve" effect occurs.The results would be useful in the next numerical simulations.关键词
多孔介质/微小颗粒/沉积/界面Key words
porous media/micro particle/deposition/interface分类
天文与地球科学引用本文复制引用
雷海燕,崔明杰,戴传山,李琪..微小颗粒在多孔介质中运移的实验研究[J].中国科学院大学学报,2017,34(2):251-258,8.基金项目
国家自然科学基金(51306130和41574176)资助 （51306130和41574176）
