稠油相对渗透率曲线影响因素分析

油藏相对渗透率是油田开发设计和分析的一个重要地层参数,实验室中常通过分析岩心非稳态驱替数据获得.文中通过不同的实验温度、束缚水饱和度,以及不同的驱替方式、CaCO3沉积研究稠油油藏相对渗透率曲线的变化.实验结果表明:实验温度、束缚水饱和度、驱替方式对稠油油藏相对渗透率曲线的形状、等渗点、残余油饱和度,以及残余油饱和度对...

Affecting factors of relative permeability curve in heavy oil reservoir

Relative permeability of reservoir is an important formation parameter of developing design and analysis of oilfield,which can be gotten through the analysis of unstable-state displacement data of core in laboratory.This paper discusses the relative permeability curve change of heavy oil reservoir according to different experimental temperature,different bound water saturation,different displacement pattern and CaCO3 deposition.Study shows that the experimental temperature,bound water saturation and displacement pattern indicate a major impact on the shape and isotonic point of relative permeability curve,residual oil saturation and the oleic permeability corresponding with residual oil saturation.The higher experimental temperature and bound water saturation,the better the characteristics of relative permeability curve are.The corresponding displacement pattern is steam flooding.The residual oil saturation is low after CaCO3 deposition,with oleic permeability high and water wettability of reservoir obvious.