发明名称 |
Hydraulic bi-directional rotary isolation valve |
摘要 |
<p>A bi-directional valve for use as a downhole casing isolation valve is described. A housing has a fluid flow path and a valve seat having a valve seating surface. A valve element has an outer cylindrical surface and a valve seating area on the outer cylindrical surface adapted to engage the valve seating surface on the valve seat so as to seal the valve in both directions.</p> |
申请公布号 |
EP2412917(A1) |
申请公布日期 |
2012.02.01 |
申请号 |
EP20100177230 |
申请日期 |
2009.03.17 |
申请人 |
WEATHERFORD LAMB, INC. |
发明人 |
LLOYD, SAM SUN;REAVES, MICHAEL R. |
分类号 |
E21B34/10 |
主分类号 |
E21B34/10 |
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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