The ultra-low permeability pulse permeability test device is a high-precision instrument dedicated to measuring the permeability performance of very low permeability rock samples (such as shale, tight sandstone, coal rock, etc.). The core is based on the pulse decay method (unsteady state method), which calculates the permeability by monitoring the decay process of pressure pulses in the sample, combined with a mathematical model. This type of equipment is widely used in the evaluation of conventional and unconventional oil and gas reservoirs, the development of deep geothermal resources, the geological storage of carbon dioxide and the underground storage of nuclear waste.

1. Permeability: 0.1nD-1mD
2. Confining pressure: ≤150 MPa
3. Pore pressure: ≤100 MPa
4. Temperature range: room temperature ~ 150°C
5. Sample size: adapt to a variety of sizes
3. Degree of automation: multi-physical quantity integration (strain, acoustic emission, etc.)
4. Special function: high-temperature and high-pressure coupling test