Relationship between bulk foam stability, surfactant formulation and oil displacement efficiency in porous media

Kofi Osei-Bonsu, Paul Grassia, Nima Shokri

Research output: Contribution to journalArticle

33 Citations (Scopus)

Abstract

Success of foam as a displacing fluid in porous media depends on longevity of foams in the presence of non-aqueous phase liquids such as hydrocarbons. The stability of foam at bulk scale has been used in many cases to screen potential surfactants for core flooding studies. Although this method may aid in determining the foamability and stability of a surfactant, no reliable correlation has been found to exist between bulk foam stability and performance in
porous media. We have conducted a comprehensive series of experiments to examine and compare the stability of selected surfactant foams at bulk scale and during oil displacement in porous media. The oil displacement was investigated in a micromodel manufactured by 3D printing technology. Our results demonstrated that oil displacement efficiency by foam is strongly influenced by the surfactant formulation. More importantly, no meaningful correlation between the bulk foam stability and the oil displacement efficiency of the corresponding foams in porous media was observed. Our pore-scale investigation shows that
the stability or instability of foam at bulk scale does not necessarily determine its
effectiveness in porous media. Hence, performing displacement tests as presented in our study may give more insights into the potential performance of foams.
LanguageEnglish
Pages403-410
Number of pages8
JournalFuel
Volume203
Early online date5 May 2017
DOIs
Publication statusPublished - 1 Sep 2017

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Surface-Active Agents
Porous materials
Foams
Oils
Surface active agents
Hydrocarbons
Printing
Fluids
Liquids

Keywords

  • foam
  • bulk foam stability
  • coalescence
  • foam in porous media
  • oil recovery

Cite this

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title = "Relationship between bulk foam stability, surfactant formulation and oil displacement efficiency in porous media",
abstract = "Success of foam as a displacing fluid in porous media depends on longevity of foams in the presence of non-aqueous phase liquids such as hydrocarbons. The stability of foam at bulk scale has been used in many cases to screen potential surfactants for core flooding studies. Although this method may aid in determining the foamability and stability of a surfactant, no reliable correlation has been found to exist between bulk foam stability and performance inporous media. We have conducted a comprehensive series of experiments to examine and compare the stability of selected surfactant foams at bulk scale and during oil displacement in porous media. The oil displacement was investigated in a micromodel manufactured by 3D printing technology. Our results demonstrated that oil displacement efficiency by foam is strongly influenced by the surfactant formulation. More importantly, no meaningful correlation between the bulk foam stability and the oil displacement efficiency of the corresponding foams in porous media was observed. Our pore-scale investigation shows thatthe stability or instability of foam at bulk scale does not necessarily determine itseffectiveness in porous media. Hence, performing displacement tests as presented in our study may give more insights into the potential performance of foams.",
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Relationship between bulk foam stability, surfactant formulation and oil displacement efficiency in porous media. / Osei-Bonsu, Kofi; Grassia, Paul; Shokri, Nima.

In: Fuel, Vol. 203, 01.09.2017, p. 403-410.

Research output: Contribution to journalArticle

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AU - Osei-Bonsu, Kofi

AU - Grassia, Paul

AU - Shokri, Nima

PY - 2017/9/1

Y1 - 2017/9/1

N2 - Success of foam as a displacing fluid in porous media depends on longevity of foams in the presence of non-aqueous phase liquids such as hydrocarbons. The stability of foam at bulk scale has been used in many cases to screen potential surfactants for core flooding studies. Although this method may aid in determining the foamability and stability of a surfactant, no reliable correlation has been found to exist between bulk foam stability and performance inporous media. We have conducted a comprehensive series of experiments to examine and compare the stability of selected surfactant foams at bulk scale and during oil displacement in porous media. The oil displacement was investigated in a micromodel manufactured by 3D printing technology. Our results demonstrated that oil displacement efficiency by foam is strongly influenced by the surfactant formulation. More importantly, no meaningful correlation between the bulk foam stability and the oil displacement efficiency of the corresponding foams in porous media was observed. Our pore-scale investigation shows thatthe stability or instability of foam at bulk scale does not necessarily determine itseffectiveness in porous media. Hence, performing displacement tests as presented in our study may give more insights into the potential performance of foams.

AB - Success of foam as a displacing fluid in porous media depends on longevity of foams in the presence of non-aqueous phase liquids such as hydrocarbons. The stability of foam at bulk scale has been used in many cases to screen potential surfactants for core flooding studies. Although this method may aid in determining the foamability and stability of a surfactant, no reliable correlation has been found to exist between bulk foam stability and performance inporous media. We have conducted a comprehensive series of experiments to examine and compare the stability of selected surfactant foams at bulk scale and during oil displacement in porous media. The oil displacement was investigated in a micromodel manufactured by 3D printing technology. Our results demonstrated that oil displacement efficiency by foam is strongly influenced by the surfactant formulation. More importantly, no meaningful correlation between the bulk foam stability and the oil displacement efficiency of the corresponding foams in porous media was observed. Our pore-scale investigation shows thatthe stability or instability of foam at bulk scale does not necessarily determine itseffectiveness in porous media. Hence, performing displacement tests as presented in our study may give more insights into the potential performance of foams.

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