Micellar slug for oil recovery

Patent · Tue Apr 23 00:00:00 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
• Resource Relation: Patent Priority Date: Priority date 31 Mar 1983, Japan; Other Information: PAT-APPL-480862
• Country of Publication: United States
• Language: English

Related Subjects

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