Oil recovery method using an aqueous fluid drive

Patent · Tue Nov 09 04:00:00 EST 1971

OSTI ID:6285792

Harvey, R R

A process for producing oil from an oil stratum by aqueous fluid drive, utilizing oil-displacing agents including surfactants, viscosifiers, and minute solids, is described. The method consists of injecting into a well in an oil stratum from 0.05 to 1 pv of an aqueous slug comprising (1) a suspension of minute solids of a size in the range of 0.001 to 1 mu capable of being driven through the stratum by aqueous fluid drive to assist in displacing oil; (2) at least one polyethylene oxide-type surfactant in solution in a concentration in the range of 0.001 to 2% by wt; and (3) a microbial gum polysaccharide in solution in a concentration in the range of about 0.01 to about 0.5% by wt. (10 claims)

• Assignee: TUL; EDB-81-108615
• Patent Number(s): US 3618664
• OSTI ID: 6285792
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
ADDITIVES
ALCOHOLS
CARBOHYDRATES
ENERGY SOURCES
FLUID INJECTION
FOSSIL FUELS
FUELS
GLYCOLS
HYDROXY COMPOUNDS
OIL WELLS
ORGANIC COMPOUNDS
ORGANIC POLYMERS
PARTICLE SIZE
PETROLEUM
POLYETHYLENES
POLYMERS
POLYOLEFINS
POLYSACCHARIDES
SACCHARIDES
SIZE
SURFACTANTS
VISCOSITY
WATER TREATMENT
WATERFLOODING
WELLS