Secondary recovery process

Details Secondary recovery process Secondary recovery process

1980-04-04

1982-05-25

Michl, Paul R.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Polymers from only ethylenic monomers or processes of...

525336, C08F22802

Patent

active

043317960

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 copolymer of (a) vinyl sulfonic acid alkoxylated with ethylene oxide or a mixture of ethylene oxide and propylene oxide and (b) acrylamide. 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
patent: 3272695 (1966-09-01), Frohberger
patent: 3617572 (1971-11-01), Monagle
patent: 3779917 (1973-12-01), Norton
patent: 4171418 (1979-10-01), Barua

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