High salinity polymer drive for surfactant flooding systems

Details High salinity polymer drive for surfactant flooding systems High salinity polymer drive for surfactant flooding systems

1987-06-29

1989-04-18

Suchfield, George A.

Wells

Processes

Distinct, separate injection and producing wells

166274, 252 8554, E21B 4322

Patent

active

048218030

ABSTRACT:
The invention is a method of recovering hydrocarbons from an underground hydrocarbon formation penetrated by at least one injection well and at least one production well, in which a saline polymer slug containing about 0.1% to about 3.0% of a drive fluid additive is injected into the formation after the injection of a saline surfactant slug. The drive fluid additive has the structure:

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SPE Paper No. 14292, Minssieux, L., "Surfactant Flooding with Hard Water: A Case Study Solved by HLB Gradient," presented 9/22-25/85 at 60th Annual Conference, Las Vegas.

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