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 sensing element consisting of a thin, usually circular, plate that is deformed by pressure applied across the plate.

n: part of a diaphragm meter that regulates the length of the diaphragm stroke;used to adjust the volumetric displacement.

n: a dome or anticlinal fold in which a mobile plastic core has ruptured the more brittle overlying rock. Also called piercement dome.

a salt or other column that pierces upper layers and may form traps of obstructions to flow.

n: the penetration of overlying layers by a rising column of salt or other easily deformed mineral caused by differences in density.

n: an electrical device that senses very small bellows or diaphragm movement in a bellows meter. Allows a computer to calculate flow rates directly by producing electrical output

n: a tool used to set upright the casing in whose structure several are added comparing with the diapsid centering device