دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

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

n: a kind of rig floor tools which is used to manipulate the punching bar boring by percussion and used to replace the safety clamp in drilling short hole

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: a device that secures the end of a bend in the wire rope to the body of the wire rope. A typical safety clamp consists of a U-shaped bolt that is fastened to the wire rope with a saddle-shaped base. Two nuts on the base thread onto the U-bolt to secure the clamp to the rope. Depending on the diameter of the wire rope, which determines the amount of rope that is looped back on itself to secure the rope to the tongs or other device, clamps can vary in number from one to three.