Experimental device and method for simulating huff and puff imbibition under actual shale oil stratum

The invention relates to the technical field of shale oil reservoir development, in particular to a huff and puff imbibition experimental device and method for simulating shale oil in an actual stratum. The experimental device comprises a bin body device, a liquid supply device, a pressure monitoring device, a temperature control device, a metering device, pipe valves and connecting pieces, the pipe valves and the connecting pieces are connected with all the parts, the liquid supply device comprises a first displacement pump, a second displacement pump and a back pressure pump, and the bin body device comprises a huff and puff imbibition bin and a plurality of piston containers. The pressure monitoring device comprises a plurality of pressure sensors and a plurality of overpressure safety valves, the temperature control device comprises a constant-temperature box, and the metering device comprises a back-pressure valve, a metering pipe, a pressure-resistant observation window and a gas meter. According to the