发明名称 |
Tubular severing system and method of using same |
摘要 |
A method for severing a tubular of a wellbore is provided. The method involves positioning a blowout preventer about a tubular, the blowout preventer having a plurality of rams slidably positionable therein and a plurality of blades carried by the rams for engaging the tubular. The method further involves piercing the tubular with a piercing point of at least one of the blades such that a portion of the tubular is dislodged therefrom, and raking through the tubular with a cutting surface of at least one of the blades. |
申请公布号 |
US8720565(B2) |
申请公布日期 |
2014.05.13 |
申请号 |
US201113118289 |
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 |
E21B29/00;E21B33/06 |
主分类号 |
E21B29/00 |
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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