دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: The fluid uesd to force cement slurry or some other material into its intended position (e.g. drilling mud may be used to displace cement out of the casing and into the annulus).

n: A kind of multiple cement method in which the gate plug reaches the collar under the promotation of the displacement fluid

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

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.

n: a device placed in the cementing head and run down the casing behind cement to clean the cement off the walls of the casing and to prevent contamination between the cement and the displacement fluid.

n: It located between the drill fluid and slurry,which be used to clear the slurry on the surface of pipe ,and prevent drill fluid polluting slurry.