Micellar slug for oil recovery

Patent · Mon Apr 22 23:00:00 EST 1985

OSTI ID:5289554

Morita, H; Kowada, Y; Ukigai, T; Yamada, J

A micellar slug for use in the recovery of oil is described, the slug containing a hydrocarbon, an aqueous medium, a surfactant, and a cosurfactant. The surfactant contains, as an essential component, a divalent metal salt of an alpha-olefin sulfonic acid. This micellar slug has an excellent salinity tolerance and hard-water resistance. Furthermore, the micro-emulsion formed from the present micellar slug is maintained stable in a subterranean reservoir formed by alkaline earth metal carbonates and, therefore, the oil recovery efficiency can be improved.

• Assignee: Lion Corporation (Japan)
• Patent Number(s): US 4512404
• OSTI ID: 5289554
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
ALKALINE EARTH METAL COMPOUNDS
AQUEOUS SOLUTIONS
CARBONATE ROCKS
DISPERSIONS
DISPLACEMENT FLUIDS
ENHANCED RECOVERY
FLUID INJECTION
FLUIDS
HYDROCARBONS
MICELLAR SYSTEMS
MICROEMULSION FLOODING
MISCIBLE-PHASE DISPLACEMENT
MIXTURES
OIL WELLS
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC SULFUR COMPOUNDS
RECOVERY
ROCK-FLUID INTERACTIONS
ROCKS
SALINITY
SEDIMENTARY ROCKS
SOLUTIONS
SULFONIC ACIDS
SURFACTANTS
SWEEP EFFICIENCY
WELLS