| 发明名称 |
APPARATUS AND METHOD FOR RUNNING, SETTING AND TESTING A COMPRESSION-TYPE WELL PACKOFF |
| 摘要 |
<p>1532255 Wells &c FMC CORP 19 Dec 1975 [2 May 1975] 52001/75 Heading E1F The subject matter of this Specification is similar to that described in Specification 1532256, but the claims are concerned with particular embodiments of the tool having fluid actuated means for returning the piston to its starting position.</p> |
| 申请公布号 |
CA1030063(A) |
申请公布日期 |
1978.04.25 |
| 申请号 |
CA19750240442 |
申请日期 |
1975.11.25 |
| 申请人 |
FMC CORPORATION |
发明人 |
THUSE, ERIK |
| 分类号 |
E21B33/043;(IPC1-7):21B23/04 |
主分类号 |
E21B33/043 |
| 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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