发明名称 |
Subsurface Annular Safety Barrier |
摘要 |
A subsurface annular safety barrier for controlling fluid flow in the tubing-casing annulus in an annular flow well. The barrier may be positioned proximate the top of a formation to block fluid flow through the annulus upon loss of casing integrity. An embodiment of the annular safety barrier includes a packer and a valve, wherein the valve is operated to a closed position without mechanical manipulation of the tubing.
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申请公布号 |
US2007034380(A1) |
申请公布日期 |
2007.02.15 |
申请号 |
US20060533138 |
申请日期 |
2006.09.19 |
申请人 |
SCHLUMBERGER TECHNOLOGY CORPORATION |
发明人 |
KRAWIEC PETER;LEISMER DWAYNE D.;HILSMAN YOUEL G. |
分类号 |
E21B34/06;E21B33/12 |
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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