In petroleum exploration engineering, water absorption expansion of mud shale formation is one of the main factors affecting the stability of well wall. The high-temperature and high-pressure shale dilatometer can detect the hydration expansion law of mud shale samples under the simulation of downhole formation temperature and pressure, evaluate the inhibition ability of relevant treatment agents, and select the type or ratio of treatment agents suitable for drilling site. It has an important reference and guidance function for the study of well wall stability, the adoption of scientific and economic treatment decisions, and the research and production of inhibitory treatment agents.

The instrument adopts today's more advanced technology, equipped with a special sample preparation device and data automatic acquisition and processing system, can simulate shale forming formation pressure, automatic collection of test parameters, data processing, real-time display test results, storage, display, print test curve and data.

Can be carried out:

1. Hydration expansion law of mud shale:

2. Evaluation of inhibition performance of treatment agent:

3. Use concentration of inhibitory treatment agent;

4, a variety of treatment agent compound ratio;

5. Temperature and pressure conditions applicable to treating agent or shale.