| 摘要 |
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 acrylamide and vinyl sulfonic acid or salts thereof alkoxylated with an alkylene oxide. Optionally, the drive fluid can be saturated with carbon dioxide and/or natural gas at the injection pressure.
|
