| 发明名称 |
Method for releasing stuck drill pipe |
| 摘要 |
A method is revealed for releasing a stuck drill string in a borehole of an underground formation by application of an additive fluid comprising fresh water or brine and a polymer material.
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| 申请公布号 |
US4466486(A) |
申请公布日期 |
1984.08.21 |
| 申请号 |
US19830483786 |
申请日期 |
1983.04.11 |
| 申请人 |
TEXACO INC. |
发明人 |
WALKER, CLARENCE O. |
| 分类号 |
C09K8/02;E21B31/03;(IPC1-7):E21B23/00 |
主分类号 |
C09K8/02 |
| 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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