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 results 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.
LEI Haiyan
,
CUI Mingjie
,
DAI Chuanshan
,
LI Qi
. Experimental study of migration of micro particles in porous media[J]. Journal of University of Chinese Academy of Sciences, 2017
, 34(2)
: 251
-258
.
DOI: 10.7523/j.issn.2095-6134.2017.02.020
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