The main characteristics of low-permeability fractured reservoirs are large changes in permeability and strong heterogeneity, which leads to low accuracy and poor performance of conventional reservoir numerical simulation methods.Taking the C4+52reservoir in BYS area of Changqing Oilfield as an example, the characteristics of low-permeability fractured reservoirs are studied.In addition, through comprehensive analysis of dynamic development data and production logging data, combined with reservoir numerical simulation, this paper proposes a new simulation method for fracture development reservoirs, which uses production logging data to correct and cooperate with local grid refinement technology to simulate.After improved, the historical fitting accuracy rate of simulation technology is improved by 15％.The simulation results are consistent with the violent flooding phenomenon, which can accurately reflect the fracture development between wells.The accuracy of the numerical simulation results of low permeability fractured reservoirs has been significantly improved.%针对低渗透裂缝性油藏纵向及平面渗透率变化大、非均质性强的特点,常规的油藏数值模拟方法模拟准确率低、效果差.以长庆油田BYS区C4+52油藏为例,研究了低渗透裂缝性油藏的特点,从动态开发资料、生产测井资料综合分析入手,与油藏数值模拟相结合,在裂缝发育处利用生产测井资料修正、配合局部网格加密技术进行模拟.通过新方法对模拟技术改进后,历史拟合准确率提高15％,模拟结果与暴性水淹现象一致,能够准确反映井间的裂缝发育情况,低渗透裂缝性油藏数值模拟结果的准确率得到明显提高.
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