An electric simulation experiment procedure for predicting productivity of multi-stage fractured horizontal wells was proposed in the paper.Firstly

we developed a 3D electric field simulator based on the actual situation of reservoirs after a multi-stage fracturing in a horizontal well.Secondly

we set up parameters for an electrolyte and an electrolytic cell based on sandbody distributions

flow boundary types of reservoirs

well bore trajectory in sandbodies

permeability and thickness of reservoirs and etc.We then input parameters of simulated wellbores and fractures in accordance to the length of a lateral

height and length of fractures

numbers of stages

numbers of fractures

spacing between fractures and so on.Finally

we gathered electronic signals to predict the productivity.The procedure was applied to a fluvial sandbody to optimize geometry and placement as well as numbers and spacing of fractures in laterals based on comparative simulation experiments in reservoirs of different thickness.The results provided technological support to field operation.The procedure with its accurate simulation of the influence of fracturing parameters upon productivity of wells may be used as gui-dance for the design of horizontal well fracturing and completion.