发明名称 |
Tubular severing system and method of using same |
摘要 |
Techniques for severing a tubular of a wellbore penetrating a subterranean formation are provided. A blade is extendable by a ram of a blowout preventer positionable about the tubular. The blade includes a blade body having a front face on a side thereof facing the tubular. At least a portion of the front face has a vertical surface and at least a portion of the front face has an inclined surface. The vertical surface is perpendicular to a bottom surface of the blade body. The blade body includes a loading surface on an opposite side of the blade body to the front face. The loading surface is receivable by the ram. The blade also includes a cutting surface along at least a portion of the front face for engagement with the tubular, and a piercing point along the front face for piercing the tubular. The piercing point has a tip extending a distance from the cutting surface. |
申请公布号 |
US8720564(B2) |
申请公布日期 |
2014.05.13 |
申请号 |
US201113118252 |
申请日期 |
2011.05.27 |
申请人 |
SPRINGETT FRANK BENJAMIN;JOHNSON CHRISTOPHER DALE;PETERS SHERN EUGENE;ENSLEY ERIC TREVOR;NATIONAL OILWELL VARCO, L.P. |
发明人 |
SPRINGETT FRANK BENJAMIN;JOHNSON CHRISTOPHER DALE;PETERS SHERN EUGENE;ENSLEY ERIC TREVOR |
分类号 |
E21B29/08;E21B33/06 |
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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