دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: a cable on a pumping unit, looped over the horsehead and connected to the carrier bar to support the polished rod clamp. See sucker rod pumping.

n: in crane operations, a sling composed of several legs, the tops of which are gathered in a fitting that goes over the cranes lifting hook. See leg.

n: A kind of brassboard method for controlling gas overflowing. When gas overflowing leading to underground blowout happens, an actuator will be threw into the drill column to open side opening of diverter valve.

applied stress over change in volume.

n: the large circular gear in a mud pump that is driven by the prime mover and that, in turn, drives the connecting rods.

n: The big and round gear installed in drilling pump.

v: to use a mill to remove the outside area of a permanent downhole tool.

n: a milling device attached to the bottom of washpipe that mills or drills debris accumulated around the outside of the pipe being washed over. Usually, a bum shoe has pieces of very hard tungsten carbide embedded in it. Also caned a rotary shoe. See washpipe.

n: the apparent loss of weight of an object immersed in a fluid. If the object is floating, the immersed portion displaces a volume of fluid the weight of which is equal to the weight of the object.

n: The upward force acting on an object placed in a fluid. The buoyancy force is equal to the weight of fluid displaced by the object. Buoyancy can have significant effects over a wide range of completion and workover activities, especially in cases in which

the amount of weight that is offset by lift from the fluid when the piece of equipment is immersed in the fluid.

n: an elevation on an ancient land surface that is covered by younger sedimentary rocks.

to mill a piece of equipment (and often to catch it with an overshot).