دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: a very hard, and relatively small, cylinder made of tungsten carbide bonded with nickel or cobalt. One end of the insert is rounded or tapered;the other end is truncated (cut oft) and inserted into a bit cone. The round or tapered end contacts the formation and drills it. Several inserts make up the cutters on a tungsten carbide insert bit.

v: in pipeline construction, to penetrate or pierce manually. Compare bore.

n: a characteristic sedimentary deposit of the continental rise, formed by a turbidity current and composed of clay, silt, and gravel with the clay on top. See turbidity current.

a measurement of fluid clarity. Suspended solids and color in water reduces light transmission. Turbidity is a comparison of the amount of light that passes through a trial fluid compared to a clear sample.

n: a dense mass of sediment-laden water that flows down the continental slope, typically through a submarine canyon. It carries clay, silt, and gravel quickly and turbulently downslope in a narrow tongue. When it reaches the more gradual slope of the continental rise, its energy is dissipated rapidly by friction, and the sediments settle out, largest particles first, to form a thick graded bed called a turbidite.

n: a bladed rotor flowmeter component that turns at a speed that is proportional to the mean velocity of the stream and therefore to the volume rate of flow.

n: a fuel oil similar to diesel fuel that a turbine compressor bums. Some turbines do not require fuel as high in quality as a reciprocating engine, such as a diesel engine.

n: a velocity-measuring device for fluids in which the flow is parallel to the rotor axis and the speed of rotation is proportional to the rate of flow. The volume of gas in gas measurement is determined by counting the revolutions of the rotor. In liquid turbine meter measurement, the meter and electronic instrumentation are combined to measure total flow and/or flow rate within the piping system.

n: see turbodrill.

n: The dynamic drill that driving the turbine turn by drill fluid.

a motor spun by injected fluid moving past vanes affixed to the rotor.