发明名称 |
Inverse viscosity grading |
摘要 |
The method of oil recovery for use within a fluid flood comprising grading the viscosity of injected fluids at a low concentration at the front thereof to a high concentration at the rear thereof to prevent the formation of viscous zones within the injected fluids which reduce oil recovery.
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申请公布号 |
US4415033(A) |
申请公布日期 |
1983.11.15 |
申请号 |
US19810301490 |
申请日期 |
1981.09.14 |
申请人 |
STANDARD OIL COMPANY |
发明人 |
CHAN, ALBERT F.;CASTEEL, JERRY F. |
分类号 |
C09K8/58;E21B43/20;(IPC1-7):E21B43/22 |
主分类号 |
C09K8/58 |
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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