Experimental study of migration of micro particles in porous media

doi:10.7523/j.issn.2095-6134.2017.02.020

Abstract

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 d_p values of 12.96 and 22.81 μm, porous medium particle diameter D_p 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 d_p=12.96 μm. However, when d_p=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.

Key words: porous media, micro particle, deposition, interface

CLC Number:

P641.2

LEI Haiyan, CUI Mingjie, DAI Chuanshan, LI Qi. Experimental study of migration of micro particles in porous media[J]. , 2017, 34(2): 251-258.

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