I. Overview
1. The equipment is used to simulate the temperature and pressure under formation conditions, and according to different mining methods, it tests the situation of reservoir sand entering the wellbore during mining.
2. The system includes: overburden stress loading system, simulated reservoir chamber, constant temperature control system, natural gas pressurization and gas and water injection system, sand control system, sand production monitoring system, back pressure control system, and temperature, pressure and flow acquisition system.
3. The equipment is suitable for seawater, marine sediments, natural gas hydrates, etc.
4. The equipment adopts a modular design, which is not only convenient for operation and maintenance, but also can increase the function of the equipment through different combinations.
II. Main Technical Parameters of the System
1. Overburden stress loading system (flow rate: 0～60ml/min, pressure 50MPa, accuracy 0.05MPa)
2. Simulated reservoir chamber (Φ150×100mm, pressure 32MPa, temperature -10℃～30℃, temperature control accuracy ±0.05℃)
3. Constant temperature control system (circulating water bath type, temperature -10℃～30℃, temperature control accuracy ±0.05℃)
4. Natural gas pressurization system (maximum pressurization 35MPa, controlled gas source 0.4～0.8MPa, volume 400ml)
5. Water injection system (flow rate: 0.01～9.99ml/min, pressure 40MPa, voltage 220V)
6. Sand control system (sand control pipe diameter Φ20mm, length 50mm, 75mm, 100mm, double casing)
7. Sand production detection system (visual pipe section, pressure 16MPa, volume 200ml, temperature -10℃～30℃)
8. Acquisition system (including pressure, temperature, flow rate, image, etc., can control some working parts)