Numerical Simulation of Capillary Trapping of CO₂ in Porous Media

• SUEKANE Tetsuya

  Department of Energy Sciences, Tokyo Institute of Technology

• TAKEHANA Kensuke

  Department of Mechanical Engineering, the University of Tokushima

Bibliographic Information

Other Title

• 多孔質内におけるCO₂の毛管トラップの数値シミュレーション
• 多孔質内におけるCO₂の毛管トラップの数値シミュレーション
• タコウシツ ナイ ニ オケル CO ₂ ノ モウカン トラップ ノ スウチ シミュレーション

Abstract

Capillary trapping is one of the major mechanisms to hold CO₂ in reservoirs against buoyancy force. In present paper, the effect of porous structures on the residual gas saturation was investigated numerically by means of lattice Boltzmann method (LBM). Numerical simulations were carried out for twelve artificially-generated porous media. Water was injected into the porous media filled with supercritical CO₂ at constant pressure difference until the residual gas trapping condition. The residual gas saturation increases with a decrease in the porosity and the average pore throat radius. At the relatively high capillary number of 10^-4, lower pore throat radii with higher capillary pressure tend to hold CO₂ bubbles against the pressure gradient. Under the hydrophilic conditions, the residual gas saturation decreases monotonically with an increase in the contact angle. However, the positions and sizes of trapped gas bubbles change absolutely with the contact angle.

Journal

• Journal of MMIJ

  Journal of MMIJ 130 (7), 404-410, 2014

  The Mining and Materials Processing Institute of Japan

Keywords

• Capillary Trapping
• Residual Gas Trapping
• CCS
• Lattice Boltzmann Method

Details

• CRID: 1390001205281634944
• NII Article ID: 130005086577
• NII Book ID: AA12188381
• DOI: 10.2473/journalofmmij.130.404
• ISSN: 18840450
• ISSN: 18816118
• NDL BIB ID: 025630968
• Web Site: http://id.ndl.go.jp/bib/025630968
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I025630968
• Text Lang: ja
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed