摘要
在油气藏勘探开发过程中,电性差异是储层识别最明显的特征之一,研究储层含油岩石的复电阻率特征对定量评价含油饱和度具有重要意义。以野外采集的4块天然砂岩样品为试验材料,针对4块物性参数(孔隙度、渗透率等)不同的砂岩,在不同含油饱和度下进行油水驱替试验,分别得出4块砂岩的复电阻率幅频与相频曲线。并通过Cole-Cole模型进行反演得到相应的模型参数,分析了砂岩电阻率、极化率与含油饱和度之间的关系,为勘探砂岩储层以及对储层进行含油性评价提供了参考。
In the exploration and development of oil and gas reservoirs,electrical differences is one of the most obvious features for reservoir identification,and the study of the complex resistivity characteris⁃tics of oil-bearing rocks in reservoirs is important for quantitative evaluation of oil-bearing saturation.In this study,four samples of natural sandstone collected in the field were used as experimental materials.For these four rocks with different physical parameters(porosity,permeability,etc.),oil-water repulsion experi⁃ments were carried out under different oil saturation,and the complex resistivity amplitude-frequency and phase frequency curves of the four sandstone blocks were obtained respectively.The corresponding model parameters were obtained by inversion of Cole-Cole model,and the relationship between resistivity,polar⁃ization and oil saturation of sandstone was obtained,which provides a reference for sandstone reservoir ex⁃ploration and oil bearing evaluation.
作者
张浩杰
罗健
胡芷媛
王钦莹
何培雍
ZHANG Haojie;LUO Jian;HU Zhiyuan;WANG Qinying;HE Peiyong(College of Geophysics and Petroleum Resources,Yangtze University;China Institute of Geological Environment Monitoring)
出处
《现代矿业》
CAS
2022年第9期48-52,共5页
Modern Mining
基金
大学生创新训练项目“储层含油岩石的复电阻率响应机理研究”(编号:2019054)。
关键词
砂岩储层
复电阻率
极化率
含油饱和度
sands reservoir
complex resistivity
polarizability
oil saturation
