دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: the viscosity of a drilling fluid as measured with a directindicating, or rotational, viscometer.

n: The viscosity a fluid appears to have on a given instrument at a stated rate of shear. It is a function of the plastic viscosity and the yield point. The apparent viscosity in centipoises, as determined by the direct-indicating viscometer, is equal to the

the viscosity at a given shear rate and a given temperature.

n: A component of rotary viscometer. Connected with inner barrel.

n: a dilatant. or inverted plastic, fluid is usually made up of a high concentration of well-dispersed solids that exhibits a nonlinear consistency curve passing through the origin. The apparent viscosity increases instantaneously with increasing rate of shear. The yield point, as determined by conventional calculations from the direct-indicating viscometer readings, is negative;however, the true yield point is zero.

n: This fluid is one of non-Newtonian flow patterns whose unique feature
is that once the fluid is subjected to force,it will start flowing without any gel strength.




a well dispersed, high solids content liquid that has very high apparent viscosity with any applied shear.

n: commonly called a V-G meter: A rotational device powered by means of an electric motor or handcrank. Used to determine the apparent viscosity, plastic viscosity, yield point, and gel strengths of drilling fluids.

n: a device for measuring the viscosity of a fluid (a fluids resistance to flow) that provides a value for the viscosity on the device. No calculations have to be made since the device gives a direct reading of the value.

n: direct indicating made by Fann corporation and usually used in interior to measure all kinds of rheological parameter of drilling fluid

n: the survey instrument of rheological parameter ,made by Fann corporation and able to measure the rheological property of all kinds of drilling fluid under condition of 260 Celsius degrees,and 689.47kPa