Tertiary oil recovery

Patent · Tue Mar 05 00:00:00 EST 1985

OSTI ID:5588509

Byham, D E

An improved method for the recovery of tertiary oil from oil formations containing connate waters having a high brine concentration. A stable alcohol external microemulsion is formed from specific brine-soluble surfactants and alcohols for employment as a chemical slug. Such a microemulsion may be used to efficiently and effectively recover tertiary oil from formations in high brine concentrations. Specific examples of surfactants which may be employed to form the microemulsions of the present invention include amphoteric surfactants such as bis-2-hydroxyethylcocoamine propane sulfonate and bis-2-hydroxyethyloctadecyl amine propane sulfonate.

• Assignee: Mobil Oil Corporation
• Patent Number(s): US 4502540
• OSTI ID: 5588509
• Resource Relation: Patent File Date: Filed date 4 Feb 1983; Other Information: PAT-APPL-463699
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
DISPLACEMENT FLUIDS
CHEMICAL COMPOSITION
MICROEMULSIONS
OIL WELLS
MICROEMULSION FLOODING
ALCOHOLS
AMINES
BRINES
ENHANCED RECOVERY
GROUND WATER
PROPANE
RESERVOIR FLUIDS
SULFONATES
SURFACTANTS
ALKANES
COLLOIDS
DISPERSIONS
EMULSIONS
FLUID INJECTION
FLUIDS
HYDROCARBONS
HYDROGEN COMPOUNDS
HYDROXY COMPOUNDS
MISCIBLE-PHASE DISPLACEMENT
ORGANIC COMPOUNDS
ORGANIC SULFUR COMPOUNDS
OXYGEN COMPOUNDS
RECOVERY
WATER
WELLS
020300* - Petroleum- Drilling & Production