发明名称 |
A valve device and method |
摘要 |
<p>A valve device for use downhole is described as comprising a body member and a channel through the body member through which fluid can flow. A moveable member is mounted within the body member, and comprises an obturating member for selectively obturating the channel. The moveable member is moveable between a first position in which the channel is not obturated and fluid flow through the channel is permitted, and a second position in which the channel is obturated and fluid flow through the channel is substantially prevented. A method of preventing the fluid flow downhole is also described as comprising the steps of inserting a downhole tool comprising a valve device according to the present invention downhole and moving the moveable member from the first to the second position such that the obturating member obturates the channel.</p> |
申请公布号 |
GB2323111(B) |
申请公布日期 |
2001.04.04 |
申请号 |
GB19980002321 |
申请日期 |
1998.02.04 |
申请人 |
* SPECIALISED PETROLEUM SERVICES LIMITED;* SPS-AFOS INTERNATIONAL;* SPS-AFOS GROUP LIMITED |
发明人 |
PAUL DAVID * HOWLETT;MARK * CARMICHAEL |
分类号 |
E21B21/10;E21B23/00;(IPC1-7):E21B34/06 |
主分类号 |
E21B21/10 |
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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