Well cementing displacement simulation test system of horizontal well

The invention provides a well cementing displacement simulation test system of a horizontal well. The well cementing displacement simulation test system of the horizontal well comprises an irregular wellhole simulation device, a power displacement device module, an inner tube eccentric adjustment module and a displacement efficiency measuring module. The irregular wellhole simulation device comprises a measuring segment composed of a plurality of regular segments and irregular segments which are combined and transformed according to actual conditions in the well; and the regular segments and the irregular segments are made of transparent materials. According to the well cementing displacement simulation test system of the horizontal well, because of the arrangement of the regular segmentsand the irregular segments which are capable of being randomly combined to simulate the actual conditions in the horizontal well, not only can influence factors of the displacement efficiency of a horizontal well conventional