Secondary recovery process using brine soluble terpolymers
Patent
·
OSTI ID:6987368
Hydrocarbons are recovered from a subterranean hydrogen-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 terpolymer of acrylamide, acrylonitrile and acrylic acid or a terpolymer of acrylamide, acrylonitrile and acrylic acid alkoxylated with ethylene oxide. If desired, the drive fluid may be saturated with carbon dioxide and/or natural gas at the injection pressure.
- Assignee:
- Texaco Inc.
- Patent Number(s):
- US 4420598
- OSTI ID:
- 6987368
- Country of Publication:
- United States
- Language:
- English
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