1. Overview
1. The equipment is used to simulate the temperature and pressure under formation conditions, and to test the situation of reservoir sand entering the wellbore during mining according to different mining methods.
2. The system includes: overlying stress loading system, simulated reservoir chamber, constant temperature control system, natural gas pressurized intake water system, sand control system, sand output monitoring system, back pressure control system and temperature and pressure flow acquisition system.
3. The applicable medium of the equipment is sea water, marine sediment, natural gas hydrate, etc.
The equipment adopts modular design, which is not only convenient for operation and maintenance, but also can increase the use function of the equipment through different combinations.
Main technical parameters of 2. system
1. Overlying stress loading system (flow rate: 0~60 ml/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, control gas source 0.4~0.8MPa, volume 400ml)
5. Inlet water system (flow rate: 0.01~9.99 ml/min, pressure 40MPa, power supply voltage 220V)
6. Sand control system (diameter of sand control pipe sleeve Φ20mm, length 50mm,75mm,100mm, double-layer casing)
7. Sand detection system (visual pipe section, pressure 16MPa, volume 200ml, temperature -10 ℃ ~ 30 ℃)
8. Acquisition system (including pressure, temperature, flow rate, image, etc., controllable part of the working parts)