Recovering oil by injecting aqueous alkali, cosurfactant and gas

Patent · Tue Jan 15 00:00:00 EST 1985

OSTI ID:5637533

Reisberg, J; Bielmowicz, L J; Thigpen, D R

A process of recovering oil from a subterranean reservoir in which the oil is acidic but forms monovalent cation soaps of only relatively low interfacial activity when reacted with aqueous alkaline solutions, comprises displacing the oil toward a production location with a mixture of gas and cosurfactant-containing aqueous alkaline solution.

• Assignee: Shell Oil Co.
• Patent Number(s): US 4493371
• OSTI ID: 5637533
• Resource Relation: Patent File Date: Filed date 29 Jul 1983; Other Information: PAT-APPL-518711
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
OIL WELLS
CAUSTIC FLOODING
GAS INJECTION
MICROEMULSION FLOODING
AQUEOUS SOLUTIONS
ENHANCED RECOVERY
PH VALUE
SOAPS
SURFACTANTS
WELL STIMULATION
DISPERSIONS
FLUID INJECTION
MISCIBLE-PHASE DISPLACEMENT
MIXTURES
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
RECOVERY
SOLUTIONS
STIMULATION
WATERFLOODING
WELLS
020300* - Petroleum- Drilling & Production