Process for secondary recovery

Details Process for secondary recovery Process for secondary recovery

1980-04-21

1982-04-27

Guynn, Herbert B.

Compositions

Leather or fur treating

166275, 166280, 166308, 252 855R, 525336, E21B 4322, E21B 4325, E21B 43267

Patent

active

043269699

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 or the sodium, potassium or ammonium salt thereof and a minor amount of polyacrylamide or partially hydrolyzed polyacrylamide or the sodium, potassium or ammonium salt thereof alkoxylated with an alkylene oxide. Optionally, the drive fluid can be saturated with carbon dioxide and/or natural gas at the injection pressure. An aqueous fracturing fluid containing a small amount of alkoxylated polyacrylamide or partially hydrolyzed polyacrylamide is also described.

REFERENCES:
patent: 2808397 (1957-10-01), Stroh et al.
patent: 3002960 (1961-10-01), Kolodny
patent: 3684014 (1972-08-01), Norton
patent: 3709297 (1973-01-01), Christopher et al.
patent: 3804173 (1974-04-01), Jennings
patent: 4044831 (1977-09-01), Allen

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