发明名称 |
Expandable locking thread joint |
摘要 |
A thread for expandable downhole tubular connections is disclosed. The thread on at least one of the pin and box is coated, preferably with an anti-galling compound. During expansion the coating crumbles and the particles in between the threads keep the joint from becoming undone despite longitudinal shrinkage from the expansion or any tendency of the swage to impart a rotational motion on one part of the joint during the expansion process. |
申请公布号 |
GB0510181(D0) |
申请公布日期 |
2005.06.22 |
申请号 |
GB20050010181 |
申请日期 |
2002.12.04 |
申请人 |
BAKER HUGHES INCORPORATED |
发明人 |
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分类号 |
C23C8/26;C23C8/50;C23C8/80;E21B17/043;E21B17/08;E21B43/10;F16L13/14;F16L13/16 |
主分类号 |
C23C8/26 |
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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