低渗透裂缝型砂岩油藏加密调整数值模拟研究

针对低渗透裂缝型砂岩油藏新肇油田转成线性注水井网开发中暴露出的矛盾，利用采收率与井网密度公式计算新肇油田经济极限井距。根据井点信息，结合数字化沉积相研究成果，建立了新站油田相控地质模型，应用CMG数模软件中的双孔双渗模型开展新肇油田古634区块剩余油研究，主要开发指标历史拟合精度在5％以内，较好地适应新站低渗透裂缝性油藏，定性定量地搞清剩余油分布规律；针对剩余油特点，开展该区加密调整研究，设计不同的加密方案并通过数值模拟评价其开发效果，应用经济评价优选出合理的加密调整方式是油井间垂直距离50m中心加密油井。

Numerical simulation study on well pattern realignment by infilling for a low-permeability and fractured sandstone reservoir

In view of the contradictions exposed from converting to a waterflooding development of linear well network in Xinzhao Oilfield,which is a low permeability fractured sandstone reservoir,the economic limit of well spacing was calculated by recovery ratio and well spacing density formula .Based on information of well points,also integrating the research results of digitized sedimentary facies,a facies-controlled geological model for Xinzhao Oilfield was established,and then a dual-porosity and dual-permeabili...