专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

81. 发明授权

US4612985A Seal assembly for well tools 失效
标题翻译：密封组件用于井具
公开(公告)号：US4612985A
公开(公告)日：1986-09-23
申请号：US758406
申请日：1985-07-24
申请人： Richard P. Rubbo , David M. Haugen
发明人： Richard P. Rubbo , David M. Haugen
IPC分类号： E21B17/06 , E21B33/12
CPC分类号： E21B17/06 , E21B33/12
摘要： A method and apparatus for inserting a seal stack in a seal bore defined by a well tool located downhole where ambient conditions would cause radial swelling of the seal stack. The seal stack is mounted at the surface in a confined space defined between a mandrel and a constraining sleeve shearably connected to the mandrel. Upon run-in of the mandrel to enter the seal bore, the constraining sleeve engages an upwardly facing surface surrounding the entrance to the seal bore which prevents further downward movement of the constraining sleeve. Application of a downward force effects the shearing of the connection between the mandrel and the constraining sleeve and permits the mandrel and seal stack to be inserted in the seal bore while the constraining sleeve moves upwardly relative to the mandrel.
摘要翻译：一种用于将密封堆叠插入密封孔的方法和装置，所述密封孔由位于井下的井工具限定，其中环境条件将引起密封堆的径向膨胀。密封堆叠被安装在限定在心轴和可剪切地连接到心轴的约束套管之间的限制空间中的表面处。当心轴进入密封孔时，约束套筒接合围绕密封孔的入口的向上表面，防止约束套管进一步向下运动。施加向下的力影响了心轴和约束套管之间的连接的剪切，并且允许心轴和密封组件被插入到密封孔中，而约束套筒相对于心轴向上移动。

IPRDB

热门服务

关于我们

友情链接

联系方式