Abstract
In this paper the problem of determining the viscosity coefficient of a Newtonian liquid for the development of a rotary viscometer considered. The least squares method is proposed to be used for processing the measurement results. Conversion factors of electric sensor readings are proposed. The calibration instrument is designed to calculate the conversion coefficient of the torsional moment to current of the sensor. The proposed formulas are useful for developing an algorithm for calculating a rotary viscometer with more accurate processing of measurement results.
Highlights
Properties liquids and gases are the main inputs for the oil and gas industry
The proposed formulas are useful for developing an algorithm for calculating a rotary viscometer with more accurate processing of measurement results
Dr velocity gradient in the direction perpendicular to the fluid velocity. It is generally accepted [6,7,8] that the fluid's velocity varies according to the linear law in the gap between the measuring cylinders of the rotary viscometer and the numerical value of its derivative doesn’t depend on the distance to the rotating cylinder surface: dU = const = U, (2)
Summary
Properties liquids and gases are the main inputs for the oil and gas industry. One of these parameters is the viscosity which is necessary for the construction, operation and development of oil and gas fields [1, 2]. In this paper the problem of determining the viscosity coefficient of a Newtonian liquid for the development of a rotary viscometer considered. The least squares method is proposed to be used for processing the measurement results. The calibration instrument is designed to calculate the conversion coefficient of the torsional moment to current of the sensor.
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