石南低渗油藏剩余油富集规律研究

Concentrating Rules of Remaining Oil in Shinan Low-Permeability Reservoir

石南21井区为低孔低渗油藏,目前处于高速开发期,储层非均质性影响了地下油水流动。为了能准确研究区块剩余油富集规律,应用相控地质建模及油藏数值模拟一体化技术,用已知的相模型约束属性模型的展布,得到的模型更符合地质实际。在此基础上进行历史拟合并分析区块剩余油分布可知,区块构造高部位及低渗透率区域为剩余油富集区,为区块的后续挖潜提供了依据。

Shinan 21 wellblock is a low-porosity and low-permeability reservoir in fast developing period.The heterogeneity of reservoir affects the movement of underground fluids.In order to get the concentrating rules of remaining oil distribution,facies-controlled modeling and reservoir simulation is used.Facies model is used as a constraint to property model to get a geology model more like real situation.Based on the model,after history matching and analyzing remaining oil distribution,it is concluded that the concentrating area is high point of structure and low permeability area,which provides basis for potential tapping.