Fluid microstructures and enhanced oil recovery
Ultralow interfacial tensions between oil and water are caused not by monolayer adsorption but by a film of surfactant-rich third phase-either viscous material derived from liquid crystalline dispersions, or less viscous equilibrium microemulsion. The sometimes transparent dispersions, which had been overlooked before, become ultradispersions of vesicles upon sonication, and can be dissolved by certain alcohols. These and other findings are summarized from a concerted study of a petroleum sulfonate surfactant system representative of surfactant waterflooding, and of pure surfactant systems that mimic it. Reviewed are the relationships between surfactant-rich microstructures and their compositions, recovery of residual oil from short sandstone cores, and surfactant retention in such cores. Vesicular surfactant delivery is examined. 87 references.
- Research Organization:
- Univ. of Minnesota, Minneapolis
- OSTI ID:
- 6688851
- Report Number(s):
- CONF-810417-
- Journal Information:
- AIChE Symp. Ser.; (United States), Vol. 78:212; Conference: 90. AICHE national meeting, Houston, TX, USA, 5 Apr 1981
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
OIL WELLS
MICROEMULSION FLOODING
PETROLEUM SULFONATES
SURFACE TENSION
ADDITIVES
ALCOHOLS
AQUEOUS SOLUTIONS
DISPERSIONS
ENHANCED RECOVERY
FILMS
FLOW RATE
MULTIPHASE FLOW
PETROLEUM
RESERVOIR ENGINEERING
REVIEWS
SANDSTONES
SURFACTANTS
VISCOSITY
WATER
DOCUMENT TYPES
ENERGY SOURCES
ENGINEERING
ESTERS
FLUID FLOW
FLUID INJECTION
FOSSIL FUELS
FUELS
HYDROGEN COMPOUNDS
HYDROXY COMPOUNDS
MISCIBLE-PHASE DISPLACEMENT
MIXTURES
ORGANIC COMPOUNDS
ORGANIC SULFUR COMPOUNDS
OXYGEN COMPOUNDS
RECOVERY
ROCKS
SEDIMENTARY ROCKS
SOLUTIONS
SULFONATES
SULFONIC ACID ESTERS
SURFACE PROPERTIES
WELLS
020300* - Petroleum- Drilling & Production