发明名称 |
METHOD AND APPARATUS FOR EXPANDING AND SEPARATING TUBULARS IN A WELLBORE |
摘要 |
Embodiments of the present invention provide an apparatus and method fo r expanding a tubular. In one aspect, embodiments of the prevent invention provide an expander tool having at least two expansion members radially extendable from the expander tool into contact with a surrounding inside surface of the tubular, the at least two expansion members radially extendable at different times and axially spaced after radially extending. In another aspect, embodiments include a method for isolating a first portion of a wellbore from a second portion of a wellbore comprising locating an expandable tubular within the wellbore between the first and second portions , the expandable tubular having a weakened portion therein, isolating the first portion from the second portion of the wellbore, and expanding the expandable tubular proximate to the weakened portion to sever the expandable tubular.
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申请公布号 |
CA2509317(C) |
申请公布日期 |
2009.08.04 |
申请号 |
CA20052509317 |
申请日期 |
2005.06.07 |
申请人 |
WEATHERFORD/LAMB, INC. |
发明人 |
HARRALL, SIMON JOHN;MAGUIRE, PATRICK G.;COON, ROBERT J.;SIMPSON, NEIL ANDREW ABERCROMBIE |
分类号 |
E21B29/08;E21B;E21B17/00;E21B17/08;E21B29/00;E21B33/12;E21B33/14;E21B43/08;E21B43/10;E21B43/12 |
主分类号 |
E21B29/08 |
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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