Shaft blockage degree evaluation method and device

The embodiment of the invention provides a shaft blockage degree evaluation method and device. The method comprises the following steps: selecting a reference well, and acquiring the production statistical data of the reference well; based on the production statistical data of the reference well, performing training to obtain a reference well feature model; based on the reference well feature model, adopting production statistical data of a to-be-evaluated well to obtain a model oil pressure of the to-be-evaluated well; and calculating an oil pressure difference value of a to-be-evaluated well, and evaluating the blockage degree of the to-be-evaluated well according to the oil pressure difference value, wherein the oil pressure difference value is the difference value between the actual oil pressure of the to-be-evaluated well and the model oil pressure. According to the method, the absolute blockage condition of an oil-gas well can be displayed, the influence of stratum characteristicchange on blockage degre