发明名称 |
Method of forming a lined tubular member |
摘要 |
A corrugated conduit and method of expanding to form a lined tubular member are described. In some embodiments, a corrugated conduit may be expandable. The corrugated conduit may be inserted into a tubular member and hydraulically or otherwise expanded against walls of the tubular member to strengthen and/or seal the tubular member when the corrugated conduit is expanded in the tubular member. In certain embodiments, the tubular member is a drill stem.
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申请公布号 |
US7926160(B2) |
申请公布日期 |
2011.04.19 |
申请号 |
US20050194917 |
申请日期 |
2005.08.01 |
申请人 |
PACKLESS INDUSTRIES |
发明人 |
ZIFFERER L. ROBERT;REED EDWARD A. |
分类号 |
B21D15/03;B21C37/20;B23P17/00 |
主分类号 |
B21D15/03 |
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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