发明名称 |
METHOD AND APPARATUS FOR SEALING A WELLBORE |
摘要 |
Methods and apparatuses for sealing a wellbore are provided. A seal assembly carried by a pair of opposing ram blocks of a blowout preventer is provided. The seal assembly includes a pair of seals carried by the pair of opposing ram blocks and a plurality of inserts carried by the pair of seals. The inserts include an upper body and a lower body with a rib therebetween. The upper and lower bodies each have an extended tip on a seal end thereof and a tip receptacle on a leading face thereof for receiving the extended tip. The extended tips are positionable in the tip receptacle of an adjacent inserts whereby an extrusion of a seal therebetween is restricted. |
申请公布号 |
US2012227987(A1) |
申请公布日期 |
2012.09.13 |
申请号 |
US201213400098 |
申请日期 |
2012.02.19 |
申请人 |
CASTRIOTTA SASCHA ANTONIO;FRANKS BRADFORD SHANE;NATIONAL OILWELL VARCO, L.P. |
发明人 |
CASTRIOTTA SASCHA ANTONIO;FRANKS BRADFORD SHANE |
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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