NP-02 high temperature dynamic swell meter is a precision measuring instrument that is used to test the swelling changes of clay shale under high temperature and atmospheric conditions, thereby assessing the inhibition characteristics of different reagents to clay shale.

It consists of a support, test cup, dial gage and magnetic stirring heater.

The instrument adopts precision machinery pointer gage that can display accurate and direct readings and is easy to operate. The stirring system can fully stir the fluid and simulate the circulating state of drilling fluid under well drilling conditions, so the testing data are more true and accurate.

Put the compacted pulverized clay shale cake in a cylindrical mold, place the sensor bar on the mud cake and then put it on the base of the test cup. The reagents are injected into the test cup. When the mud cake swells, the pressure will push the sensor bar and the dial gage. Read the swell increment directly from the dial gage.