摘要
建立了考虑源(汇)影响的含有不渗透区域复杂边界条件下均质油藏稳定渗流的数学模型。利用边界元方法求解数学模型,获得了地层中任意一点的压力公式。提出了流线场的生成方法。绘制了考虑复杂边界条件和不渗透区域影响的流线分布图,并分析了流线分布的特征。通过分析表明,不渗透区域的大小、形状和位置对整个油藏的流线分布均存在不同程度的影响,因此,如果根据地质资料已确定出油藏内存在不渗透区域,则在井网优化和调整注采方案时必须考虑不渗透区域的影响。
This paper has constructed a mathematical model containing steady seepage flow of homogeneous reservoir under the complex boundary condition in impermeable area,which is effected by source(congruence).Boundary element method was adopted to calculate mathematical model,and pressure formula for arbitrary point in stratum was derived.Based on the study above mentioned, this paper proposed generation method of flow field,plotting distribution graph of flow path,which took complex boundary condition and effect of impermeable area into account,analyzing the distribution characteristics of flow path.The corresponding analysis indicated size,shape and location of impermeable all have different impacts on flow path distribution throughout the reservoir.So effect of impermeable area must be considered in the process of well pattern optimization and production-injection medication if geology data has shown that impermeable area actually exists in the reservoir.
出处
《大庆石油地质与开发》
CAS
CSCD
北大核心
2006年第4期57-59,共3页
Petroleum Geology & Oilfield Development in Daqing
关键词
边界元方法
流线
不渗透区域
数学模型
稳定渗流
boundary element method
flow path
impermeable area
mathematical model
steady seepage flow
