دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: a cement wiper plug that precedes cement slurry down the casing. The plug wipes drilling mud off the walls of the casing and prevents it from contaminating the cement. See cementing, wiper plug. bottompull method n: an offshore pipeline construction technique in which the pipe string remains below the surface while it is towed to its final location.

n: See bottom wiper plug.

in cementing, the first plug pumped in cementing with the two plug system. It isolates the mud and cement slurry and allows passage of the cement slurry when the plug “bumps” or reaches the float shoe or float collar. It is hollow with a diaphragm that is

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 to prevent the cement slurry being contaminated and divide the cement slu

n: see bottom plug, wiper plug.