Investigation of foam flow in a 3D printed porous medium in the presence of oil

Kofi Osei-Bonsu, Paul Grassia, Nima Shokri

Research output: Contribution to journalArticle

23 Citations (Scopus)
20 Downloads (Pure)

Abstract

Foams demonstrate great potential for displacing fluids in porous media which is applicable to a variety of subsurface operations such as the enhanced oil recovery and soil remediation. The application of foam in these processes is down to its unique ability to reduce gas mobility by increasing its effective viscosity and to divert gas to un-swept low permeability zones in porous media. The presence of oil in porous media is detrimental to the stability of foams which can influence its success as a displacing fluid. In the present work, we have conducted a systematic series of experiment using a well - characterised porous medium manufactured by 3D printing technique to evaluate the influence of oil on the dynamics of foam displacement under different boundary conditions. The effects of the type of oil, foam quality and foam flow rate were investigated. Our results reveal that generation of stable foam is delayed in the presence of light oil in the porous medium compared to the heavy oil. Additionally, it was observed that the dynamics of oil entrapment was dictated by the stability of foam in the presence of oil. Furthermore, foams with high gas fraction appeared to be less stable in the presence of oil lowering its recovery efficiency. Pore-scale inspection of foam - oil dynamics during displacement revealed formation of a more stable front as the foam quality decreased which effectively improved the oil recovery. This study extends the physical understanding of oil displacement by foam in porous media and provides new physical insights regarding the parameters influencing this process.
Original languageEnglish
Pages (from-to)850-858
Number of pages9
JournalJournal of Colloid and Interface Science
Volume490
Early online date11 Dec 2016
DOIs
Publication statusPublished - 15 Mar 2017

Keywords

  • foam
  • foam flow
  • porus media
  • bubble coalescence
  • foam stability
  • foam quality

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