发明名称 |
IMPROVING COLLAPSE RESISTANCE OF TUBING |
摘要 |
A method of increasing the collapse resistance of a tubular comprises locati ng a tool having at least one, and typically three, bearing members within a tubular. The bearing members are positioned in engagement with a wall of the tubular to apply a radial force to a discrete zone of the wall. This radial force is then applied to further discrete zones of the wall, the level of radial force being selected such that the collapse resistance of the tubular is increased.
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申请公布号 |
CA2460829(C) |
申请公布日期 |
2008.09.09 |
申请号 |
CA20032460829 |
申请日期 |
2003.07.11 |
申请人 |
WEATHERFORD/LAMB, INC. |
发明人 |
HARRALL, SIMON JOHN;METCALFE, PAUL DAVID;HILLIS, DAVID JOHN |
分类号 |
E21B17/00;C21D7/04;C21D7/12;E21B43/10 |
主分类号 |
E21B17/00 |
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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