Process for secondary recovery

Details Process for secondary recovery Process for secondary recovery

1982-02-08

1984-04-03

Guynn, Herbert B.

Compositions

Leather or fur treating

166275, 5253294, E21B 4322

Patent

active

044406525

ABSTRACT:
Hydrocarbons are recovered from a subterranean hydrocarbon-bearing formation penetrated by an injection well and a production well by displacing hydrocarbons toward the production well using a drive fluid such as water thickened with polyacrylamide or partially hydrolyzed polyacrylamide alkoxylated with an alkylene oxide and, if desired, a small amount of a sulfonated, alkoxylated polyacrylamide, i.e., an N-substituted polyacrylamide having N-substituents of the formula:

REFERENCES:
patent: 2808397 (1957-10-01), Stroh et al.
patent: 3002960 (1961-10-01), Kolodny
patent: 3679000 (1972-07-01), Kaufman
patent: 3709297 (1973-01-01), Christopher et al.
patent: 3804173 (1974-04-01), Jennings
patent: 4044831 (1977-08-01), Allen

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