发明名称 |
Cosurfactant in preflush for surfactant flood system |
摘要 |
In a post-primary oil recovery process involving the sequential addition of a saline preflush, a surfactant system comprising a surfactant, a cosurfactant and brine, the improvement comprising the addition of cosurfactant to the preflush. If desired, cosurfactant can also be added to a subsequent injected mobility buffer. The resulting system gives extraordinarily high recovery of oil.
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申请公布号 |
US4274488(A) |
申请公布日期 |
1981.06.23 |
申请号 |
US19790071608 |
申请日期 |
1979.08.31 |
申请人 |
PHILLIPS PETROLEUM COMPANY |
发明人 |
HEDGES, JAMES H.;GLINSMANN, GILBERT R. |
分类号 |
C09K8/584;(IPC1-7):E21B43/22 |
主分类号 |
C09K8/584 |
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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