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大庆油田朝 45区块油层物性差 ,渗透率低 ,存在油层压力下降快 ,油井产量递减快 ,含水上升快等诸多问题 .为了改善朝 45区块开发效果 ,利用VIP软件对该区块进行数模研究 .在历史拟合的基础上 ,模拟了不同增产措施的开发效果 ,预测了 7种开发方案 .结果表明 :该区块由于存在隐裂缝 ,注水压力不宜过高 ;改善朝 45区块开发效果的优选方案为 :井网加密、面积注水改为线性注水、油井堵水、关高含水井、注水井调剖 ;实施井网加密时应综合利用油井堵水 ,关高含水井 ,注水井调剖等增产措施 ,以提高经济效益 ;预测该区块合理的注采比为 2 .0
Block 45 of Daqing Oilfield has poor reservoir properties and low permeability, which leads to the rapid decrease of reservoir pressure, the slowdown of oil well production and the rapid rise of water cut etc. In order to improve the development effect towards Block 45, Based on the history fitting, this paper simulates the development effects of different stimulation measures and predicts seven kinds of development plans.The results show that the pressure of water injection should not be too high due to the presence of hidden cracks, and the development of the DPRK 45 block should be improved The optimal scheme of effect is as follows: well pattern encryption, area water injection to linear water injection, oil well water shutoff, high water cut well and water injection well profile control. When implementing well pattern encryption, comprehensive utilization of oil well shutoff, high water cut well and water injection well Profile control and other stimulation measures to improve economic efficiency; predict the reasonable injection-production ratio of this block is 2.0