دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: There have cross fault-block and cutback on the cutter of the cone bit .

n: the drop in pressure resulting from the increased velocity of a fluid as it flows through a constricted section of a pipe.

n: (VLCC) a supertanker whose capacity is larger than 100,000 deadweight tons (90,720 deadweight tonnes) but less than 500,000 deadweight tons (453,600 deadweight tonnes). Compare ultralarge crude carrier.

n: a container used as a structural envelope to provide for functions that include storage, settling, separation, and filtration for liquid and/or vapor.. Conditions of vessel use include atmospheric and elevated pressures and temperatures.

n: 1. a device, positioned in the drill stem between the bit and the drill collars, that absorbs impact loads and vibration from the up-and-down motion of the drill stem. Vibration dampeners are designed to transmit torque while absorbing reciprocative loads that decrease the efficiency of the drill bit. Also called a Shock Sub. 2. a device affixed to an engine crankshaft to minimize stresses that result from torsional vibration of the crankshaft. vibration error n: the maximum change in operating output, at any measured value within a specific range, when vibration levels of specified amplitude and range or frequencies are applied to the transducer along specified axes.

n: The tool can decrease the vertical and rotary shock vibration coming from bottomhole .

n: The production of ethylene-amine and vinyl sulfonate by catalytic reaction in the particular condition,which be used as thinner and filtrate reducer of high temperature drilling fluids.

n: a measure of the resistance of a fluid to flow. Resistance is brought about by the internal friction resulting from the combined effects of cohesion and adhesion. The viscosity of petroleum products is commonly expressed in terms of the time required for a specific volume of the liquid to flow through a capillary tube of a specific size at a given temperature.

n: A property of fluids and slurries that indicates their resistance to flow, defined as the ratio of shear stress to shear rate.

a measurement of the internal resistance of a fluid to flow against itself. Expressed as the ratio of shear stress to shear rate.

n: the unit of electric potential, voltage, or electromotive force in the metric system.

n: potential difference or electromotive force, measured in volts.