JST Seals has proprietary wiper fin profiles which provide optimal wiping of drill pipe as well as accurate displacement. They are available in a variety of size and combination options which provide a more reliable cleaning and displacement of your workstring.

The pumpdown plug (PDPC) & liner wiper plug (LWPC) separate cement from the displacement fluid during liner cementing operations. The PDPC, released from the cementing manifold at the surface between the cement and the displacement fluid, wipes cement from the drillpipe and lands in the LWPC. When this happens, the pressure increases and shears the LWPC, allowing both plugs to be displaced as a unit to the landing collar.

The LWPC plug, commonly shear pinned to the liner setting tools, has a hollow internal diameter that allows fluids and cement to pass through the plug until the PDPC latches into the upper part of the LWPC. The PDPC is then mechanically and hydraulically sealed to the LWPC, and the two plugs are sheared from the liner setting tool. After wiping the liner, the LWPC is latched and sealed to the landing collar, preventing the backflow of cement.

LWPCs and PDPCs are manufactured from elastomers include the Nitriles, HSN & high-grade aluminum. The materials used in our Wiper Plugs have been tried and tested by our customers and we ensure high quality standards and performance levels.