A comparative study of the effect of ready-made and in situ-formed surfactants on interfacial tension measured by drop volume tensiometry

Journal Article · Mon Mar 25 04:00:00 EST 1996 · Journal of Colloid and Interface Science

DOI:https://doi.org/10.1006/jcis.1996.0147· OSTI ID:238016

Mollet, C; Touhami, Y; Hornof, V ^[1]

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1. Univ. of Ottawa, Ontario (Canada). Dept. of Chemical Engineering

Reactive two-phase systems, such as acidic crude oil coming into contact with alkaline reagents in the process of enhanced oil recovery, are known to exhibit dynamic interfacial tensions. Interfacial tension between paraffin oil and water was investigated in the presence of surface-active additives using drop volume tensiometry. Two systems in particular were compared. In the first, sodium linoleate, a ready-made surfactant, was added to the aqueous phase. In the other, the oil phase was acidified with linoleic acid and sodium hydroxide was dissolved in the aqueous phase in order that the same surfactant be formed in situ via an interfacial reaction. The dynamic interfacial tension trends exhibited by the two systems were qualitatively comparable. Under similar conditions in terms of effective surfactant concentration and salinity, the equilibrium interfacial tensions observed were also of a similar magnitude.

• OSTI ID: 238016
• Journal Information: Journal of Colloid and Interface Science, Journal Name: Journal of Colloid and Interface Science Journal Issue: 2 Vol. 178; ISSN 0021-9797; ISSN JCISA5
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
CAUSTIC FLOODING
DISPLACEMENT FLUIDS
ENHANCED RECOVERY
INTERFACES
OIL WELLS
PETROLEUM
RESERVOIR FLUIDS
SURFACE TENSION