MRI velocity measurements of water flow in porous media containing a stagnant immiscible liquid

I. Okamoto, S. Hirai, K. Ogawa

Research output: Contribution to journalArticle

21 Citations (Scopus)

Abstract

To investigate the flow characteristics of water in a porous medium with a second, stagnant, immiscible liquid phase, we experimentally studied flow of water through a bed of glass beads containing stagnant silicone oil. For imaging, two magnetic resonance imaging (MRI) techniques were used: the chemical shift imaging method and the phase-encoding method. Two-dimensional images both with and without the silicone oil showed that the water velocity profiles drastically changed because the stagnant silicone oil changed the pore structure. Significant changes in flow were also confirmed by composing eleven two-dimensional images of velocity profiles to visualize the three-dimensional flow path and the stagnant silicone oil distribution in the porous media. A statistical method was developed to clarify the relation between pore structure and fluid flow. This method showed that, when stagnant silicone oil is present, but with the same net flow of water, the reduction in rate of flow from large, oil-blocked pores is compensated by an increase in rate of flow from the larger number of small pores.

Original languageEnglish
Pages (from-to)1465-1472
Number of pages8
JournalMeasurement Science and Technology
Volume12
Issue number9
DOIs
Publication statusPublished - 2001 Sep
Externally publishedYes

Keywords

  • MRI
  • Pore structure
  • Porous media
  • Velocity measurements
  • Water flow
  • immiscible liquid

ASJC Scopus subject areas

  • Instrumentation
  • Engineering (miscellaneous)
  • Applied Mathematics

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