发明名称 |
Apparatus and method for severing a wellbore tubular |
摘要 |
<p>An apparatus (301) for severing a wellbore tubular, which apparatus comprises at least one blade (310) for shearing said wellbore tubular, characterised in that said apparatus further comprises a projection (312), in use moveable so as to reduce the structural strength of said wellbore tubular in an area where said wellbore tubular is to be severed.</p> |
申请公布号 |
EP2400110(A3) |
申请公布日期 |
2012.06.27 |
申请号 |
EP20110180811 |
申请日期 |
2006.12.27 |
申请人 |
NATIONAL OILWELL VARCO, L.P. |
发明人 |
SPRINGETT, FRANK BENJAMIN;BRUGMAN, JAMES DENNIS |
分类号 |
E21B33/06 |
主分类号 |
E21B33/06 |
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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