优势流场表征技术

Characterization technique of predominant flow field

针对中高渗透高含水砂岩油藏的储层特征和渗流特点,应用改进流线法数值模拟技术描述流场的展布,表征油藏中流体渗流规律,可以为油藏开发决策提供精确且直观的数据及图表基础。改进流线法在物质守恒方面精度高,而有限元和有限差分方法存在物质守恒问题,对研究优势流场有着重要影响。改进流线法数值模拟可以高精度、多角度表征高含水油藏优势流场的展布,且实际研究成果表明其与现场示踪剂监测、干扰试井结果吻合。

Aiming at the reservoir characteristics and percolation characteristics of medium to high permeability and high water-cut sandstone reservoir, this paper uses the numerical simulation technology of improved streamline method to describe the flow field distribution and characterize the seepage law of reservoir fluid which can provide accurate and intuitive data and diagrams for reservoir development decision-making. Improved streamline method （MSL） has high precision in substance conservation which has an important influence on the research of predominant flow field, while finite element and finite difference methods have some problems on substance conservation. Improved streamline method can characterize the distribution of predominant flow field of high water-cut reservoir from high precision and multiple angle. Practical research results show that it coincides with the result of tracer monitoring and interference test of field.