Interfacial phenomena at fluid interfaces: interfacial viscosity and emulsion stability

Journal Article · Fri Sep 15 04:00:00 EDT 1972 · Am. Pet. Inst., Publ.; (United States)

OSTI ID:6884933

Wasan, D T

The purpose of this entire research program is to seek a better understanding of the effects of surface-active agents on the rheology (interfacial viscosity) of fluid interfaces, with emphasis on water-oil systems, as encountered in waterflooding techniques for increasing the yield of oil from a field by displacement, and also in the breaking of emulsions in petroleum production and processing. A systematic study was conducted of surface shear viscosities of soluble surfactant systems. The study suggests that trace amounts of relatively insoluble substances or relatively insoluble substances solubilized by other substances are likely to yield significant surface shear viscosities. This complex behavior is explained in accordance with the molecular picture evolving from data taken on surface tension, surface excess concentration, surface potential and light scattering ratio of the mixed solutions. Analyses were developed for time independent non-Newtonian, and time-dependent Newtonian as well as non-Newtonian flows for liquid-gas systems in the viscous traction interfacial viscometer.

• Research Organization: Illinois Inst. Technol.
• OSTI ID: 6884933
• Journal Information: Am. Pet. Inst., Publ.; (United States), Journal Name: Am. Pet. Inst., Publ.; (United States) Vol. 133; ISSN APIPC
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
023000* -- Petroleum-- Properties & Composition
COLLOIDS
DISPERSIONS
EMULSIONS
ENERGY SOURCES
FLUID INJECTION
FLUIDS
FOSSIL FUELS
FUELS
INTERFACES
LIGHT SCATTERING
MEASURING INSTRUMENTS
MIXTURES
MOLECULAR STRUCTURE
PETROLEUM
PROCESSING
REFINING
RHEOLOGY
SCATTERING
SOLUBILITY
STABILITY
SURFACE PROPERTIES
SURFACE TENSION
SURFACTANTS
VISCOSIMETERS
VISCOSITY
WATERFLOODING