发明名称 |
Delayed polyacrylamide gelation process for oil recovery applications |
摘要 |
A process for delaying the gelation rate of a polymer used in oil recovery applications. A gel is prepared by mixing a single aqueous gelation solution at the surface made up of a polyvalent metal cross-linking agent and a polyacrylamide having no hydrolysis or only a limited degree of hydrolysis. The solution is injected into a desired treatment region and gelled to completion in situ.
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申请公布号 |
US4744418(A) |
申请公布日期 |
1988.05.17 |
申请号 |
US19860939660 |
申请日期 |
1986.12.09 |
申请人 |
MARATHON OIL COMPANY |
发明人 |
SYDANSK, ROBERT D. |
分类号 |
C09K8/50;(IPC1-7):E21B33/138;E21B43/26 |
主分类号 |
C09K8/50 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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