Method o secondary recovery

Patent · Tue Sep 28 04:00:00 EDT 1965

OSTI ID:6895880

Binder, Jr, G G; Russell, C D

This is a method of secondary oil recovery in which a viscous oil-in-water emulsion is used to displace the oil. The method consists of injecting as a leading edge of a flood an emulsion of oil-in-water within the reservoir through an input well. The emulsion is driven through the reservoir to displace oil from at least a portion of it. The displaced oil is recovered through an output well or wells spaced from the input well or wells. The viscosity of the oil-in-water emulsion should not exceed about 1,000 cp and should be such that the mobility ratio of the emulsion and the reservoir approaches a value of one. The volume of emulsion should be at least about 25% of the pore volume of the reservoir contacted by the emulsion, although about 10% may be sufficient in some reservoirs. Floodwater may be injected as a driving medium provided that it does not break through into the bank of emulsion. (4 claims)

• Assignee: TUL; EDB-81-043603
• Patent Number(s): US 3208517
• OSTI ID: 6895880
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
COLLOIDS
DISPERSIONS
EMULSIONS
ENERGY SOURCES
ENGINEERING
ENHANCED RECOVERY
FLUID FLOW
FLUID INJECTION
FOSSIL FUELS
FUELS
MOBILITY
OIL WELLS
PETROLEUM
RECOVERY
RESERVOIR ENGINEERING
STIMULATION
VISCOSITY
WATERFLOODING
WELL STIMULATION
WELLS