关键词: 三角洲前缘, 低渗透砂岩储层, 油藏, 动态模型, 仿真模型, 剩余油分布

Abstract: The simulation model of remaining-oil distribution and the dynamic model for oil reservoir of low-permeability sandstone in the long-term waterflooding were developed,according to comprehensively multi-disciplinary theory and technology.Three kinds of models for micro remaining-oil distribution of reservoirs in high water-cut development stage were established.The distribution laws of remaining oil in delta-front low-permeability sandstone reservoirs were analyzed.The result showed that the evolution of the parameters for delta-front low-permeability sandstone reservoir was controlled by the hydrodynamic geologic process during the oil-reservoir development.The reservoir parameters for describing the macroscopic physical property and microcosmic pore-throat evolution are favorable to oil displacement.The simulation model of oil reservoir is the effective technological means for displaying the three-dimensional evolution rule of reservoir in long-term waterflooding,predicting and estimating the distribution of remaining oil.

Key words: delta front, low-permeability sandstone reservoir, oil reservoir, dynamic model simulation model, remaining oil distribution