水平井分段压裂产能电模拟实验方法

doi:10.11743/ogg20170219

Abstract

Abstract: 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.

Key words: electric simulation, productivity, staged fracturing, horizontal well

CLC Number:

TE357

Liu Changyin, Li Fengxia, Sun Zhiyu, Huang Zhiwen. Electric simulation experiment procedure for predicting productivity of multi-stage fractured horizontal wells[J]. Oil & Gas Geology, 2017, 38(2): 385-390.

References

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Electric simulation experiment procedure for predicting productivity of multi-stage fractured horizontal wells

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