Foam oil horizontal well cold production productivity prediction method and device and related equipment

The invention provides a foam oil horizontal well cold production capacity prediction method and device and related equipment. The method comprises the steps that the cold production flowing range of a foam oil horizontal well is divided into a plurality of areas along the section perpendicular to the horizontal section direction of the foam oil horizontal well; respectively calculating the flow of each area by utilizing a fan-shaped infinitesimal integral method and summing to obtain the cross-sectional flow perpendicular to the horizontal section direction of the foam oil horizontal well; integrating the cross section flow along the length of the foam oil horizontal well to obtain the cold production capacity of the foam oil horizontal well. According to the method, the physical property of the foam oil and the heterogeneity of the reservoir are considered through two times of integration, the method can be suitable for productivity prediction of the long-horizontal-section horizontal well, and the producti