Multiple-stage
cementing collar BUR-MSTs

Itis used for well cementing in two stages (below above the collar).

Package includes first stage cement grout squeezing plug “Bomb” plug, second stage and stop elbow for first plug setting.
Simple opening pressure adjustment and immediately prior to lowering.

Cementing ports are opened both hydraulically and with “Bomb” plug.

Inner parts of the collar are made of noncement grout squeezing plug, ferrous alloys which ensure fast drilling-out and drill bit cutting structure wear reduction.
SPECIFICATIONS