发明名称 |
CONTROLLED SHARED LOAD CASING JACK SYSTEM |
摘要 |
A method and apparatus for removing tubulars from a wellbore is disclosed. A lifting member grips the tubular and applies a lifting force. The lifting force is then transferred to a first surface. The lifting member is monitored and when the capacity of the first surface is reached a force transfer assembly is activated. The force transfer assembly transfers the lifting load between the first surface and a second surface. The lifting member and force transfer assembly are then adjusted to maximize the amount of lifting force applied t o the tubular.
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申请公布号 |
CA2563860(A1) |
申请公布日期 |
2007.04.14 |
申请号 |
CA20062563860 |
申请日期 |
2006.10.13 |
申请人 |
WEATHERFORD/LAMB, INC. |
发明人 |
HALLONQUIST, DAVID J.;MAYER, TIMOTHY J. |
分类号 |
E21B19/06;E21B19/00;E21B23/03;E21B29/00;E21B31/12 |
主分类号 |
E21B19/06 |
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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