Stammford Cementing - Laces, Interlinings & Other Accessories

They also provide a profile for landing and bumping the wiper plugs at the end (after displacement).landing collar inserts have a profile to latch the wiper plugs in place to prevent them from rotating , locking or sealing during the process of drilling them out. For highly deviated or horizontal applications, the ball seat can be manufactured with a special profile to guide the ball seat. They are normally placed one or two joints above the nearest float collar.