Abstract
An experimental study of the ability of foams to reduce gas mobility in a porous medium is reported. Single carbon number fractions of a surfactant and pure n-alkanes were used as model liquids, and a glass-bead pack was used as a model porous medium. In this simple, idealized model system of a gas-blocking foam in an oil reservoir, clear trends in the mobility reduction , as measured in a gas-blockage test, with varying combinations of oil and surfactant hydrophobe carbon number were observed. These trends could not be reproduced by foam stability as measured in conventional bulk tests, and were not explainable by several potential controlling factors that have been sought to ex0lain similar data before. However, the change in interfacial tension between gas and the aqueous phase upon equilibration with oil appears to be a good predictor of gas-blockage efficiency for the systems studied.
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© 1990 Dr. Dietrich Steinkopff Verlag GmbH & Co. KG
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Meling, T., Hanssen, J.E. (1990). Gas-blocking foams in porous media: effects of oil and surfactant hydrophobe carbon number. In: Lindman, B., Rosenholm, J.B., Stenius, P. (eds) Surfactants and Macromolecules: Self-Assembly at Interfaces and in Bulk. Progress in Colloid & Polymer Science, vol 82. Steinkopff. https://doi.org/10.1007/BFb0118252
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DOI: https://doi.org/10.1007/BFb0118252
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