公开(公告)号：US5611399A

公开(公告)日：1997-03-18

申请号：US555945

申请日：1995-11-13

申请人： Bennett M. Richard ,  Elmer R. Peterson ,  Brian J. Horton

发明人： Bennett M. Richard ,  Elmer R. Peterson ,  Brian J. Horton

IPC分类号： B01D29/11 ,  E21B43/08

CPC分类号： E21B43/088 ,  B01D29/111 ,  E21B43/084 ,  E21B43/086 ,  Y10T29/49604

摘要： A sand-filtering screen-making technique and screen are disclosed, which involves an initial assembly of the sand-filtering screen over an underlying coarse screen. The sand-filtering screen has a mechanical, longitudinal overlap-type joint. End caps are fitted over the filtering screen which has already been preassembled to the underlying coarse screen. The assembly is then mechanically forced through a die to compress the end caps onto the assembled filtering screen and underlying coarse screen. That subassembly is then assembled onto a base pipe and secured. An outer shroud can then be secured to the underlying base pipe, overlaying the filtering screen. The ends of the subassembly comprising the filtering screen and the underlying coarse screen are sealed against the support pipe by a packing gland arrangement at both ends.

摘要翻译： 公开了一种滤砂筛选技术和筛网，其涉及在下面的粗筛网上初步组装砂滤筛。 砂滤网具有机械纵向重叠型接头。 端盖安装在已经预先组装到下面的粗筛上的过滤屏上。 然后将组件机械地强制通过模具将端盖压缩到组装的过滤屏幕和下面的粗糙屏幕上。 然后将该组件组装到基管上并固定。 然后可以将外护罩固定到下面的基管，覆盖过滤网。 包括过滤网和下面的粗筛的子组件的端部通过两端的填料压盖装置密封在支撑管上。