دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: a continuous-cycle-cementing tool with bottom plug and top plug and joined to the top of the casing

n: the batching plug which entries into the casing following the cement and on whose rubber shell there are five doctor blade,usually used to shave the drilling fluid on the hole well and divide the cement slurry and displacement fluid

the space between the casing guide shoe and the cement float collar that traps cement contaminated by the top plug displacement.

n: a cement wiper plug that follows cement slurry down the casing. It goes before the drilling mud used to displace the cement from the casing and separates the mud from the sluny. See cementing, wiper plug.

in cementing, the last plug pumped in cementing with the two plug system. It isolates the displacement fluid and cement slurry. It helps keep the heavy cement slurry from reversing or U-tubing back into the wellbore while the cement slurry is still unset.