网格粗化技术对油藏数值模拟的影响

如何将密集的网格数据合理地转换到较粗的网格上去,这是现代油藏模拟技术的一个重要研究内容。在前人研究基础上,引入平均误差公式,从属性粗化和网格尺寸粗化两方面探讨了网格粗化技术对油藏数值模拟的影响。基于三微数值解的流动法优于其它的粗化方法,建议油藏数值模型的网格步长设为30~50m。进一步完善了网格粗化应遵循的基本步骤。

Influences of grid coarsening on numerical simulation of oil reservoirs

How to reasonably convert closely-set grid data onto relatively coarser grids is a key issue that needs to be studied for modern reservoir simulation techniques.By introducing an average error formula based on available research results,the influences of grid coarsening on numerical simulation of oil reservoirs are discussed in two ways,i.e.attribute coarsening and grid size coarsening.The flowing method based on tri-tiny numerical solutions is better than other coarsening methods.It is advised that the grid spacing be set at 30~50 meters.Meanwhile,the basic steps that should be followed in grid coarsening are further improved.