| 发明名称 |
Shoe for used in the construction of oil and gas wells |
| 摘要 |
A shoe for attachment to a length of casing for use in a wellbore comprises a body portion attachable to casing, and a nose portion rotatably mounted on the body portion. A casing string with a plurality of casing sections and such a shoe.
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| 申请公布号 |
US5669443(A) |
申请公布日期 |
1997.09.23 |
| 申请号 |
US19960586370 |
申请日期 |
1996.01.16 |
| 申请人 |
WEATHERFORD /LAMB, INC. |
发明人 |
BUDDE, PETER;VERSTEEG, GUUS |
| 分类号 |
E21B17/14;(IPC1-7):E21B17/05 |
主分类号 |
E21B17/14 |
| 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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