1. Summary

Along with the leap development of the engineering technology of well drilling, the amount of special technical wells, directional wells and cluster wells are more and more, hence the requirement to the lubricity of drilling fluids is higher. At the same time, the chemical additives used for lubricating drilling fluids also grow year by year. A kind of instrument is needed to evaluate lubricants because the quality and compatibility of various lubricants are different. Therefore, we have developed the Model NZ-3A Mud Cake Friction Coefficient Tester

This instrument is characterized by its convenient carrying, reliable working, high precision and producible measuring results. It is an essential instrument for drilling fluid analysis.

2. Model and specification   Model: NZ-3A

The major technical parameters of the instrument are listed in the following table.

No	Name	Technical Parameters
1	Working power	220V±5% AC; 50Hz
2	Power of generator	5 W
3	Turning speed	5.5～6.5min/rev
4	Reading of angles	Digital display
5	Precision	0.5°
6	Moisture of environment	10～85RH%
7	Outer size	335×190×170