دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: A kind of carbide flank profile. Used for outer teeth of bit which is suitable for the formation from medium-hard to soft.

n: See whipstock.

n: a ring of wedges or a threaded, tapered ring that supports a string of pipe.

n: refer to donut type drill collar

a hanger, usually screwed onto the end of the top tubing joint and lowered into the slip bowl of the wellhead.

n: the phenomenon resulting when water invades rock, freezes, and, by its expansion, wedges apart the rock. Repeated freeze-thaw cycles can quickly break up any rock that has even the tiniest cracks.

n: making up is too tight to one side wedge another side.

n: a wedge or spherical-shaped end of a hammer head, which is usually opposite a flat face on the head. v: to enlarge, straighten, or smooth with a peen.

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.

n: 1. a thickened fluid that displaces drilling mud because of the difference in viscosity and weight between the spacer and the mud. Besides carrying lost circulation materials, spacers may be weighted with various inert materials such as fly ash and barite. 2. member of a pipeline construction gang who is responsible for assuring that the exact distance between the beveled pipe ends for a welding process to be used on the joint is maintained. Spacers strike a wedge into the interface between the pipe bevels and then maneuver them to an exact, uniform distance around the entire circumference.

n: A viscous fluid used to aid removal of drilling fluids before a primary cementing operation. The spacer is prepared with specific fluid characteristics, such as viscosity and density, that are engineered to displace the drilling fluid while enabling place