Y445 packer uses layering water shut off technology to seal aquifer, which is effective approach to control the rising of containing water in oil well. It can be used as bridge,substitute plug ,block up lower high pressure water zone. 

It consists of hydraulic anchor, rubber barrel, cone, slip, spiral up,friction block, central pipe, lower joint and so on.
 
Mechanical slip packer is supported by unidirectional slip. It’s set by pulling, turning and lowering. It’s released by pulling the column.