دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: a special well-control tool made up in the drill pipe usually just above bubble, of gas enter the annulus, the bubble chopper allows mud in the drill string to be diverted into the gas bubble by means of an opening, or port, in the tool. The mud from the drill string mixes with and spreads out the large gas bubble so that the gas cannot expand to a great extent as it nears the surface. Reducing the amount of bubble expansion reduces pressure on the casing near the surface and thus minimises the chances of formation fracture and an underground blowout.

n: A conical flaring device for cementing. The cement slurry is formed by throwing into hopper due to hydraulic jet.

n: a kind of appliance which is used to add powdery material into the drilling fluid

n: see water outlet.

n: a large funnel- or cone-shaped device into which dry components (such as powdered clay or cement) can be poured to mix uniformly with water or other liquids. The liquid is injected through a nozzle at the bottom of die hopper. The resulting mixture may be drilling mud to be used as the circulating fluid in a rotary drilling operation, or it may be cement slurry to be used in bonding casing to the borehole.

n: a large funnel-shaped device into which dry material (e.g.cement or powdered clay)can be poured.the purpose of the hopper is to mixthe dry material with the liquids injected at the bottom of the hopper.

mixing chamber where dry components can be evenly mixed with liquids. The dry materials are introduced at the bottom of the hopper through a nozzle.

n: A mud-flow device, also called a mud hopper, in which materials are put into the circulating mud system. The mud hopper is powered by a centrifugal pump that flows the mud at high velocity through a venturi nozzle (jet) below the conical-shaped hopper. Dr

n: a device to hold or feed drilling-mud additives. See mud-mixing devices. jet mixer n: a cement mixing system that combines dry cement with a jet of water. The turbulence from the water thoroughly mixes the cement slurry.

n: A mud-flow device, also called a mud hopper, in which materials are put into the circulating mud system. The mud hopper is powered by a centrifugal pump that flows the mud at high velocity through a venturi nozzle (jet) below the conical-shaped hopper. Dr

n: see cement hopper.

n: see jet hopper.