Waste oil well geothermal energy seasonal heat storage system for winter heating

The invention relates to a waste oil well geothermal energy seasonal heat storage system for winter heating. The system comprises a geothermal well, a heat storage device and a heat pump unit. The geothermal well is a casing type geothermal well by transforming a waste oil well, heat storage is carried out every year from March to September, low-temperature water is heated through geothermal heat,and low-temperature water in the heat storage device is completely replaced by repeated circulation; when a temperature of water at the bottom of a water tank reaches a set temperature, a water inletpipe and a water outlet pipe are closed, and the heat storage device enters a static heat preservation mode; if the temperature of the water at the bottom of the water tank is lower than the set value at a certain time, an induction switch of the water inlet pipe and an induction switch of the water outlet pipe are automatically turned on at the same time, and the process is repeated until the static heat preservation mod