发明名称 |
Hydrolyzed polyacrylamide latices for secondary oil recovery |
摘要 |
A process for recovering oil from subterranean oil-bearing formations which entails the use of a water treating medium. The water treating medium comprises an acrylamide-acrylic acid copolymer formed by hydrolyzing a water-in-oil emulsion containing from 2-75% by weight of finely divided acrylamide polymer to the extent that between 0.8 and about 67% of the amide groups originally present in the acrylamide polymer are converted into carboxyl groups.
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申请公布号 |
US4034809(A) |
申请公布日期 |
1977.07.12 |
申请号 |
US19760667767 |
申请日期 |
1976.03.17 |
申请人 |
NALCO CHEMICAL COMPANY |
发明人 |
PHILLIPS, KENNETH G.;BERNOT, ROBERT;BALLWEBER, EDWARD G. |
分类号 |
C09K8/588;(IPC1-7):E21B43/22 |
主分类号 |
C09K8/588 |
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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