摘要：In the production process of horizontal well, a pressure drop exists in horizontal wellbore from the toe to theheel, leading to different producing pressure drops at various points of horizontal section. And the water willearly breakthrough in local horizontal section, which influences on the development effect of horizontal wells.Thus, it is required to combine the pressure drop characteristics in horizontal wellbore with reservoirheterogeneity and the location of horizontal section, in order to achieve equilibrium development of horizontalwells. The edge water reservoir was taken as an example in this study, where the reservoir simulationtechnology was used for analysing the influences of reservoir permeability difference along the horizontalwellbore, thickness difference along the horizontal wellbore and the angle between horizontal section and oil-water interface on horizontal well development. As a result, reservoir parameters policy limits were obtainedfor achieving equilibrium development of horizontal wells, providing a basis for the optimal design of horizontalwells in edge water reservoirs.
