دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n pi: a device, operated by air or hydraulic fluid, that fits into the opening in the rotary table when the drill stem must be suspended in the wellbore (as when a connection or trip is being made). Automatic slips, also called power slips, eliminate the need for roughnecks to set and take out slips manually. See slips.

n: A tool operated by pneumatics or hydraulic pressure.Used for chafing the drill stem when pipe connection or tripping.

n pI: see slips.

n: the slips that drived by power. See automatic slips.

n pi: wedge-shaped pieces of metal with serrated inserts (dies) or other gripping elements, such as serrated buttons, that suspend the drill pipe or drill collars in the master bushing of the rotary table when it is necessary to disconnect die drill stem from the kelly or from the top.drive units drive shaft. Rotary slips fit around the drill pipe and wedge against the master OOshing to support the pipe. Drill collar slips fit around a drill collar and wedge against the master bushing to support the drill collar. Power slips are pneumatically or hydraulically actuated devices that allow the crew to dispense with the manual handling of slips when making a connection.

n: wege-shaped pieces of metal with a gripping element,used to suspend the drill string in the rotary table.

devices (usually containing steel teeth) that hold the pipe. Capable of suspending heavy pipe string loads.