دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

v: to supercharge an engine by use of a turbocharger.

n: a centrifugal blower driven by exhaust gas turbines and used to supercharge an engine.

n: a downhole motor that rotates a bit by the action of the drilling mud on turbine blades built into the tool. When a turbodrill is used, rotary motion is imparted only at the bit;therefore, it is unnecessary to rotate the drill stem. Although straight holes can be drilled with the tool, it is used most often in directional drilling.

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

n: We usually fix a filter in the first drill pipe under the kelly bar when use turbodrill,which prevent the raffle in the drill fluid blinding the channel.

n: a device that converts the energy of a gas or vapor stream into mechanical work by expanding the gas or vapor through a turbine.

n: the erratic, nonlinear flow of a fluid, caused by high velocity. Characterized by random eddying flow patterns superimposed on the general flow progressing in a given direction.

n: A type of fluid flow characterized by swirling or chaotic motion as the fluid moves along the flow path. This is a preferred flow regime for mud removal during primary cementing because it is perceived to result in better removal of mud, especially of mud

non laminar flow, usually above a Reynolds number of about 3000. The Blasius equation estimates the friction factor for NRe values less than 100,000 as fB = 0.0791 / NRe0.25.

n: The time needed that agitator mixing completely a pot of drill fluid.

n: in a transformer, the ratio of the number of turns in the secondary coil to the number of turns in the primary, expressed with the number of turns in the secondary given first.

v: on a rotary rig, to rotate the drill stem clockwise. When drilling ahead, the expression on bottom and turning to the right" indicates that drilling is proceeding normally.

n: It means that the drill string is turning clockwisely in rotary drilling.

n: 1. space that permits the turning around of vehicles, specifically on the drill site. 2. a period during which a plant is shut down completely for repairs, inspections, or modifications that cannot be made while the plant is operating.