High-temperature and high-pressure equipment and method for microscopic visual sulfur deposit seepage test

A high-temperature and high-pressure equipment for microscopic visual sulfur deposit seepage test, comprising an injection system, a high-temperature and high-pressure visual kettle, a pressure supply system, a data acquisition and analysis system, a fluid recovery system, and an injection branch pipe, wherein the injection system, high-temperature and high-pressure visual kettle, pressure supply system, and fluid recovery system are connected in sequence by pipes;

• the injection system comprises an ISCo micro-injection pump, an intermediate container, a thermostatic heating oven and a pressure meter;
• the intermediate container is arranged in the thermostatic heating oven, the ISCo micro-injection pump is connected to the intermediate container, and the pressure meter is set on the pipe between the ISCo micro-injection pump and the intermediate container;
• the data acquisition and analysis system comprises a microscope, a high-brightness light source and a computer;
• the pressure supply system comprises an annular pressure tracking pump, a back pressure pump, a back pressure valve and a pressure gauge;
• the fluid recovery system comprises a wide neck flask with rubber stopper, a balance, a flowmeter and an exhaust gas absorber tank;
• the thermostatic heating oven, microscope, high-brightness light source and balance are connected to the computer by a data transmission line, respectively.