Method of enhanced oil recovery employing thickened amphoteric surfactant solutions

Patent · Tue Nov 26 00:00:00 EST 1985

OSTI ID:5866226

Kalpakci, B; Chan, K S

A method is disclosed for recovering petroleum from a subterranean reservoir penetrated by at least one injection well and at least one production well comprising: injecting into the reservoir through the injection well a surfactant slug comprising an aqueous solution containing about 0.001 to about 5% by weight of an amphoteric surfactant and an effective amount of a high molecular weight homopolysaccharide gum thickener derived from fungus strains of the genus Schlerotium to provide the surfactant slug with a viscosity exceeding the viscosity of the petroleum in the reservoir; and recovering fluid from the production well.

• Assignee: The Standard Oil Company
• Patent Number(s): US 4554974
• OSTI ID: 5866226
• Resource Relation: Patent File Date: Filed date 8 Dec 1983; Other Information: PAT-APPL-559524
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
OIL WELLS
MICROEMULSION FLOODING
CHEMICAL COMPOSITION
DISPLACEMENT FLUIDS
ENHANCED RECOVERY
FUNGI
INJECTION WELLS
POLYSACCHARIDES
SURFACTANTS
VISCOSITY
CARBOHYDRATES
FLUID INJECTION
FLUIDS
MISCIBLE-PHASE DISPLACEMENT
ORGANIC COMPOUNDS
PLANTS
RECOVERY
SACCHARIDES
WELLS
020300* - Petroleum- Drilling & Production