发明申请
- 专利标题： Device for Carrying a Replacement Safety Valve in a Well Tube
- 专利标题（中）： 在管井中装载更换安全阀的装置
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申请号： US13520825申请日： 2011-01-10
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公开(公告)号： US20130068448A1公开(公告)日： 2013-03-21
- 发明人: Espen Hiorth , Terje Stormo
- 申请人： Espen Hiorth , Terje Stormo
- 申请人地址： NO Ranheim
- 专利权人： INTERWELL TECHNOLOGY AS
- 当前专利权人： INTERWELL TECHNOLOGY AS
- 当前专利权人地址： NO Ranheim
- 优先权： NO20100028 20100108
- 国际申请： PCT/NO2011/000011 WO 20110110
- 主分类号： E21B33/12
- IPC分类号： E21B33/12
摘要：
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).