1. Overview

The unconventional natural gas rock-gas multi-process coupling test system is designed to reveal the coupling mechanism of unconventional natural gas reservoir matrix and fracture/gas, fracture and gas, and rock self-heating during gas migration; further improve the reservoir conductivity model (permeability model, self-heating model and heat transfer model, gas diffusion model, reservoir matrix shrinkage model) under multi-process coupling, and provide important experimental research methods for unconventional natural gas exploitation.
The system mainly includes:
1. Model and drive system
2, Fluid Control System
3. Temperature control system
4, Operation Control System
5. Pressure control system
6. Metering system
2. technical indicators

1. Size of pseudo-triaxial core: Φ50 × 100mm
2. True triaxial core size: 25 × 25 × 60mm
3. Fully automatic control of clamp plunger and injection fluid pressure: 60MPa
4. Flow rate: ≤ 50/min; Flow rate accuracy 0.001 ml/min
5. The measuring range of trace gas flowmeter is 0.02~100 mL/min, and the measuring accuracy is 5%
6. Export gas component content analysis: brand gas chromatograph
7. Control temperature range: 30 ℃ ~ 180 ℃
Temperature control accuracy: ± 0.1 ℃; Heating rate: 4 ℃/min controllable