| 发明名称 |
STABILIZING POLYSACCHARIDE SOLUTIONS FOR TERTIARY OIL RECOVERY AT ELEVATED TEMPERATURE WITH BOROHYDRIDE |
| 摘要 |
A method of tertiary oil recovery from petroleum-containing formations at elevated temperature comprises injecting a substantially oxygen-free aqueous saline solution of water-soluble polysaccharide biopolymer treated at pH of at least 5 by the addition of alkali metal borohydride as viscosity stabilizer. |
| 申请公布号 |
DE3362945(D1) |
申请公布日期 |
1986.05.15 |
| 申请号 |
DE19833362945 |
申请日期 |
1983.10.13 |
| 申请人 |
PFIZER INC. |
发明人 |
PHILIPS, JUDSON CHRISTOPHER;TATE, BRYCE EUGENE |
| 分类号 |
E21B43/22;C09K8/02;C09K8/58;C09K8/90;E21B43/16;(IPC1-7):E21B43/22;E21B43/25 |
主分类号 |
E21B43/22 |
| 代理机构 |
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代理人 |
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| 主权项 |
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