The conjunction with pumpdown plug keeps mud to be isolated from cement and removes the cement from the inside of the liner.

The ALPS_B liner wiper plug may be shear pinned on the  bottom of the setting tool. The conjunction with pumpdown plug keeps mud to be isolated from cement and removes the cement from the inside of the liner.

Specifications 

φ177.8mm/φ139.7mm/φ127mm/φ114.3mm

  

                                                                                           Property Parameters

Specifications	φ177.8mm	φ139.7mm	φ127mm/114.3mm
Shearing Pressure of Pins in PS-A Liner Wiper Plug (MPa)	12	12	12
I.D. of Liner Wiper Plug (mm)	54	44	42

ALPS-B Liner Wiper Plug