Secondary recovery process

Details Secondary recovery process Secondary recovery process

1978-06-19

1980-08-05

Guynn, Herbert B.

Compositions

Leather or fur treating

166275, 526287, E21B 4322

Patent

active

042160987

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 a polymer comprising repeating units of vinyl sulfonic acid alkoxylated with ethylene oxide or a mixture of ethylene oxide and propylene oxide. Optionally, the drive fluid can be saturated with carbon dioxide and/or natural gas at the injection pressure.

REFERENCES:
patent: 2348705 (1944-05-01), Alderman et al.
patent: 3085063 (1963-04-01), Turbak
patent: 3180410 (1965-04-01), Turbak
patent: 3779917 (1973-12-01), Norton et al.
patent: 4110224 (1978-08-01), Allen

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