发明名称 |
BIDIRECTIONAL DOWNHOLE ISOLATION VALVE |
摘要 |
<p>An isolation valve for use in a wellbore includes: a tubular housing; an upper flapper disposed in the housing and pivotable relative thereto between an open position and a closed position; an upper piston operable to open or close the upper flapper; a lower flapper disposed in the housing and pivotable relative thereto between an open position and a closed position; a lower piston operable to open the lower flapper; an opener passage in fluid communication with the pistons and an opener hydraulic coupling; and a closer passage in fluid communication with the pistons and a closer hydraulic coupling.</p> |
申请公布号 |
WO2014210367(A2) |
申请公布日期 |
2014.12.31 |
申请号 |
WO2014US44420 |
申请日期 |
2014.06.26 |
申请人 |
WEATHERFORD/LAMB, INC. |
发明人 |
MCDOWELL, CHRISTOPHER L.;NOSKE, JOE;KING, KYLE ALLEN;HARRALL, SIMON J. |
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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