Method of enhancing recovery of petroleum from an oil-bearing formation

Patent · Tue Dec 31 04:00:00 EST 1991

OSTI ID:5469002

Marquis, D M

This patent describes a method of enhancing recovery of petroleum from an oil bearing formation during injection of a non-condensable gas comprising at least periodically injecting a preformed foam into the oil bearing formation, the preformed foam comprises a mixture of the gas, water and an effective foam-forming amount of an alpha olefin sulfonate (AOS), the AOS comprising a mixture of hydroxysulfonates and alkene-sulfonates and further wherein the hydroxy-sulfonates comprise 3-hydroxy- and 4-hydroxy-sulfonates with the ratio of 3-hydroxy-sulfonates to 4-hydroxy-sulfonates being at least about 3. This patent also describes a method of enhancing recovery of petroleum from an oil bearing formation during injection of a non-condensable gas comprising at least periodically injecting a preformed foam into the oil bearing formation, the preformed foam comprises a mixture of the gas, water and an effective foam forming amount of an alpha olefin sulfonate (AOS), wherein the AOS comprises a mixture of hydroxysulfonates and alkene-sulfonates and further wherein the hydroxy sulfonates comprise 3-hydroxy-sulfonates which are present in an amount of at least about 20% by weight of the AOS.

• Assignee: Chevron Research and Technology Co., San Francisco, CA (United States)
• Patent Number(s): US 5076357; A
• Application Number: PPN: US 7-531051
• OSTI ID: 5469002
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
ALKENES
AUGMENTATION
COLLOIDS
DISPERSIONS
ENERGY SOURCES
FLUID INJECTION
FOAMS
FOSSIL FUELS
FUELS
GAS INJECTION
HYDROCARBONS
HYDROGEN COMPOUNDS
HYDROXY COMPOUNDS
INJECTION
INTAKE
MIXTURES
OIL WELLS
ORGANIC COMPOUNDS
ORGANIC POLYMERS
ORGANIC SULFUR COMPOUNDS
OXYGEN COMPOUNDS
PETROLEUM
POLYMERS
POLYOLEFINS
RECOVERY
SULFONATES
VAPOR CONDENSATION
WATER
WELLS