1. Product Introduction of Frictional Coefficient Tester NZ-3A

Frictional Coefficient Tester model in NZ-3A is used to evaluate the quality and reasonable compatibility of drilling fluid lubricants.

The instrument is mainly composed of a box body, a cover box, a working slide plate, a LCD screen, a transmission mechanism, a micromotor, a slider and a sliding rod, etc.

The instrument uses digital display to show data directly, which has the characteristics of compact structure, high test precision, convenient and reliable operation, good repeatability and easy carry. It is an essential instrument for drilling fluid analysis.

2. Working Principle of Frictional Coefficient Tester NZ-3A

Under the inclined condition of the working slide plate, the slide block placed on the mud cake is subjected to downward gravity, and begins to slide after overcoming the viscous force. As shown in picture. 1. According to Newton's friction law:

Friction coefficient:

Let the weight of the slider be W, and the component force parallel to the inclined plane be F, that is, friction force. The vertical one is p, that is, positive pressure. All the process, please see triangle relationship to explain. (see figure 1)

SO, F=Wsinα       P=cosα

friction coefficient when the slider begins to slide down:

Also known from the similar triangles relationship,

∠α=∠β   故  tgα=tgβ

And ∠ β is measured by the instrument, so tgβ is the friction coefficient of mud cake, that is, the friction coefficient of mud cake is the viscosity coefficient measured by the instrument.

3. Models and Specifications of Frictional Coefficient Tester NZ-3A

4. The Main Technical Parameters of Frictional Coefficient Tester NZ-3A

Our company is committed to the R&D and manufacturing of drilling fluid analyzer, oil well cement tester, oilfield laboratory integrated engineering solutions and experimental instrument maintenance services. Over the past 40 years, with the care and support of oilfield users, experts from various industries and engineers and technicians, our products and technologies have been tested by the market making. Haitongda special analytical instruments have grown to world-famous brands. Our company has researched and developed on testing instruments needed in unconventional oil and gas resources, deep water, natural gas hydrate and intelligent drilling, and successively produced a various of new products, such as ultra-HTHP rheometer, drilling fluid online testing system and deep water low temperature drilling fluid testing system, which timely met the needs of technological progress in the drilling industry. At present, we are providing quality services and practical products to more than 3000 customers in more than 20 countries and regions around the world.