Device for carrying a replacement safety valve in

专利名称：Device for carrying a replacement safety

valve in a well tube

发明人：Espen Hiorth,Terje Stormo申请号：US13520825申请日：20110110公开号：US09194204B2公开日：20151124

专利附图：

摘要：Device for carrying a replacement safety valve in a well tube, with a straddlestructure for placement inside a damaged “Down Hole Safety Valve” nipple seal area. Itis comprising a pair of sealing assemblies () to be activated upon setting of the device to

seal said nipple seal area, and a locking dog assembly () for locking the device in the welltube, said elements being carried by a tubular mandrel (). At least one of the sealingassemblies () comprises a expandable element () being activated by a pair of annularpress elements ().

申请人：Espen Hiorth,Terje Stormo

地址：Trondheim NO,Saupstad NO

国籍：NO,NO

代理机构：Alix, Yale & Ristas, LLP

更多信息请下载全文后查看