
78
C
Cement Density
Cement Density: The specic gravity of the set well cement, generally about
3.15 for Portland cement. Do not confuse with slurry density.
Cementing: The technique of pumping cement into the space between the
casing and the wellbore wall in order to hold the casing in place.
Cementing Head: (1) A device attached to the top of the casing that allows
connection of the ush and cement lines and allows plugs to be dropped.
Special models may allow the cement to be rotated during cementing.
(2) The connection between the wellhead and the lines from the cement
trucks. A rotating head (uncommon except on top-drive ...