Aqueous displacement of oil

Patent · Tue Feb 23 04:00:00 EST 1965

OSTI ID:7057059

Harvey, R R; Craighead, E M

This improved process for producing oil consists of injecting an aqueous, flooding liquid into the oil-bearing formation, through a well therein so as to displace oil. The aqueous liquid and displaced oil are produced through one or more production wells. The improvement consists of incorporating in solution in the flooding liquid, in micelle-forming concentration (1.5 to 0.01 M), a first compound selected from the group consisting of the calcium salts of fatty acids, the calcium salts of alkyl sulfonic acids, and the calcium salts of alkyl sulfates (wherein the alkyl group contains from 8 to 18 carbon atoms), and a second compound, an alkali metal salt of the same group member and having the same number of carbon atoms as the first compound in a concentration in the range of 0.05 to 0.5 g per 100 g of water in the flooding liquid. The 2 compounds are added to the flooding liquid before injection. (13 claims)

• Assignee: TUL; EDB-81-025590
• Patent Number(s): US 3170514
• OSTI ID: 7057059
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
ALKALI METAL COMPOUNDS
ALKALINE EARTH METAL COMPOUNDS
CALCIUM COMPOUNDS
CARBOXYLIC ACIDS
ENERGY SOURCES
ENGINEERING
ENHANCED RECOVERY
FLUID INJECTION
FOSSIL FUELS
FUELS
MICROEMULSION FLOODING
MISCIBLE-PHASE DISPLACEMENT
OIL WELLS
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC SULFUR COMPOUNDS
PETROLEUM
RECOVERY
RESERVOIR ENGINEERING
SULFONIC ACIDS
SURFACTANTS
WATERFLOODING
WELLS