| 发明名称 |
Wellbore annular safety valve and method |
| 摘要 |
A well system includes an annular barrier separating the tubing-casing annulus into an upper annulus and a lower annulus and a barrier valve coupled with the annular barrier, the barrier valve permitting one-way fluid communication from the upper annulus to the lower annulus. |
| 申请公布号 |
NO20150937(A1) |
申请公布日期 |
2015.07.15 |
| 申请号 |
NO20150000937 |
申请日期 |
2015.07.15 |
| 申请人 |
SCHLUMBERGER TECHNOLOGY BV |
发明人 |
BALSTER EMMANUEL;DIJKSTRA NIEK;VARNES BJOERN STAALE;WINDEGAARD EIRIK;MELING GEIR;WATSON GRAHAM;PAULSEN MAGNUS;SIGMUNDSEN JONE |
| 分类号 |
E21B34/06 |
主分类号 |
E21B34/06 |
| 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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