| 发明名称 |
Process for the secondary and tertiary recovery of petroleum |
| 摘要 |
Improved secondary and tertiary oil recovery process in which water-soluble, salt-insensitive, block polymers of the A-B-A type wherein the A block is derived from a water-soluble monomer and the B block is derived from N-vinyl pyrrolidone are used as viscosity control agents.
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| 申请公布号 |
US3948783(A) |
申请公布日期 |
1976.04.06 |
| 申请号 |
US19740465658 |
申请日期 |
1974.04.30 |
| 申请人 |
CALGON CORPORATION |
发明人 |
SZABO, MIKLOS TAMAS;GUILBAULT, LAWRENCE JAMES;SHERWOOD, NANCY SPICER |
| 分类号 |
C09K8/588;E21B43/20;(IPC1-7):E21B43/20 |
主分类号 |
C09K8/588 |
| 代理机构 |
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