发明名称 |
DEVICE FOR CARRYING A REPLACEMENT SAFETY VALVE IN A WELL TUBE |
摘要 |
<p>Device for carrying a replacement safety valve in a well tube, with a straddle structure for placement inside a damaged "Down Hole Safety Valve" nipple seal area. It is comprising a pair of sealing assemblies (15, 16) to be activated upon setting of the device to seal said nipple seal area, and a locking dog assembly (17) for locking the device in the well tube, said elements being carried by a tubular mandrel (12). At least one of the sealing assemblies (15, 16) comprises a expandable element (22; 34) being activated by a pair of annular press elements (19, 20).</p> |
申请公布号 |
WO2011084073(A1) |
申请公布日期 |
2011.07.14 |
申请号 |
WO2011NO00011 |
申请日期 |
2011.01.10 |
申请人 |
BROENNTEKNOLOGIUTVIKLING AS;HIORTH, ESPEN;STORMO, TERJE |
发明人 |
HIORTH, ESPEN;STORMO, TERJE |
分类号 |
E21B33/128 |
主分类号 |
E21B33/128 |
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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