发明名称 |
APPARATUS FOR TRANSLATING A ROTARY EXPANDER TOOL DOWNHOLE |
摘要 |
An apparatus for translating an expander tool within a wellbore. The apparatus enables an expander tool to be moved axially within a wellbore during an expansion operation without raising or lowering the working string during the expansion operation. In one aspect, the apparatus comprises a shaft, a nut member which rides along the shaft when the shaft is rotated, and a recess connected to the nut member for receiving the shaft as the nut member travels axially along the shaft. The expander tool is connected at an end to the nut member such that translation of the nut member along the shaft serves to translate the expander tool axially within the wellbore. The shaft employs helical threads for incrementally advancing the nut member upon rotation of the shaft.
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申请公布号 |
CA2471614(C) |
申请公布日期 |
2008.10.21 |
申请号 |
CA20022471614 |
申请日期 |
2002.12.23 |
申请人 |
WEATHERFORD/LAMB, INC. |
发明人 |
LAURITZEN, ERIC J.;NORMAN, DALE;LUKE, MIKE |
分类号 |
E21B43/10;E21B4/18;E21B23/00;E21B29/00 |
主分类号 |
E21B43/10 |
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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