| 发明名称 |
Anchor for use in a well |
| 摘要 |
A packer utilizing a C-slip in which, during release of the packer, the upper expander pulls the C-slip off of the lower expander. If a packer is stuck in the well, the upper expander is keyed to the slip to prevent rotation of the upper expander during milling.
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| 申请公布号 |
US4441553(A) |
申请公布日期 |
1984.04.10 |
| 申请号 |
US19820408454 |
申请日期 |
1982.08.16 |
| 申请人 |
OTIS ENGINEERING CORPORATION |
发明人 |
SETTERBERG, JR., JOHN R.;PATEL, DHIRAJLAL C. |
| 分类号 |
E21B33/12;E21B33/129;(IPC1-7):E21B33/12;E21B23/00 |
主分类号 |
E21B33/12 |
| 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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