发明名称 |
Casing mandrel for facilitating well completion, re-completion or workover |
摘要 |
A casing mandrel for an independent screwed wellhead includes a seal bore for receiving a fixed-point packoff connected to a high-pressure mandrel of a pressure isolation tool, and a pin thread adapted for engagement with a box thread of a tubing head supported by the casing mandrel.
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申请公布号 |
US7921923(B2) |
申请公布日期 |
2011.04.12 |
申请号 |
US20090570260 |
申请日期 |
2009.09.30 |
申请人 |
STINGER WELLHEAD PROTECTION, INC. |
发明人 |
MCGUIRE BOB |
分类号 |
E21B33/04 |
主分类号 |
E21B33/04 |
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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