دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: see safety clamp. drill collar slips n pi: see slips.

n: refer todrill collar slip

n: the tool to bear the drill collar stem on the master bushing

n: a clamp placed very tightly around a drill collar that is suspended in the rotary table by drill collar slips. Should the slips fail. the clamp is too large to go through the opening in the rotary table and therefore prevents the drill collar string from falling into the hole. Also called drill collar clamp.

a clamp for flush joint pipe. Also any clamp for securing pipe above the rotary table, even when the slips are set.

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.