【摘要】 新站油田属于低渗透裂缝性油藏,部分油井因受天然裂缝影响高含水关井。为充分挖掘剩余油,应用CMG软件开展了数值模拟研究。在精细历史拟合的基础上,主要分析了剩余油分布特征和形成的原因,以挖掘剩余油为目标,设计了5种井网加密和注水方式调整方案,分别预测了各方案的开发指标,对比了不同方案的开发效果。结合油田实际,确定了合理的井网加密调整方案为:原井网注水井排加密注水井,新老水井交替周期注水。更多还原

【Abstract】 Some oil wells in Xinzhan oilfield,mainly consisting of low-permeability fissured pools,were shut in for high wa- ter cut by natural fissure.For the sake of residual oil,the study on numerical simulation with CMG software is per- formed.On the basis of fine history matching,the distribu- tion character and the generation mechanism of residual oil are analyzed.Five plans for pattern thickening and water flooding method modification are designed for tagging residu- al oil.And the development indexes of every plan are predic- ted.In comparison with the development effect of different plan,and in combination with the actual situation of the oil field,the rational plan of pattern thickening and modification is defined as that injection wells in the original pattern should be thickened by injection wells,and new and original injec- tion wells should be injected alternatively.更多还原