دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: a special type of engine governor that prevents an engine from running too fast (over speeding) by shutting down the engine if it overspeeds. See governor.

n: see overspeed governor.

n: the operation of hoisting the drill stem from and returning it to the wellbore. v: shortened form of make a trip." See make a trip, overspeed governor.

n: The complete operation of removing the drillstring from the wellbore and running it back in the hole. This operation is typically undertaken when the bit becomes dull or broken, and no longer drills the rock efficiently.


pulling all pipe from the well and rerunning the pipe to bottom.