基于孔隙网络模型的砂砾岩微观水驱油驱替特征  

Characteristics of microscopic water flooding for glutenite based on pore network model

作　　者：鲁国明[1] 

机构地区：[1]中石化胜利油田分公司,山东东营257000

出　　处：《特种油气藏》2010年第1期64-67,共4页Special Oil & Gas Reservoirs

基　　金：国家自然科学基金项目"油藏渗流反问题与剩余油研究"(10172061)

摘　　要：基于胜利油区砂砾岩油藏储层微观结构特征,采用双峰态曲线作为表征喉道半径的分布,结合储层微观孔隙结构参数(如孔喉比、配位数、形状因子等),建立反映砂砾岩岩石孔隙空间的三维孔隙网络模型。通过油水两相流模拟计算结果可知,与实测相渗曲线吻合较好,可用来计算油藏驱油效率和预测开发动态,尤其是对于新发现尚未进行取心实验的区块,开展砂砾岩三维孔隙网络模型计算无疑是一种有效的补充手段。The distribution of throat radius has been characterized by using bimodal-state curve based on microstructure characteristics of the glutenite reservoirs in Shengli oilfield. A 3D pore network model has been built to simulate glutenite pore space combining with microscopic pore structure parameters (i.e., pore throat ratio, coordinate number, shape factor, etc.). The simulation result of oil-water two phase flow matches well with the measured relative permeability curve. This model can be used to calculate oil displacement efficiency and to predict development performance. This 3D pore network model is undoubtedly an effective supplementary measure for newly discovered glutenite reservoir which has not conducted core test.

关 键 词：砂砾岩 微观孔隙结构 孔隙网络模型 水驱油 驱替特征 

分 类 号：TE312[石油与天然气工程—油气田开发工程]