基于稳定流法的低渗透储层渗流规律实验研究  

Experimental study of percolation in low permeability reservoir based on steady flow method

作　　者：王炯[1] 王艺景[1] 陈彬[1] 赵建锁[1] 

机构地区：[1]中石化中原油田分公司,河南濮阳457001

出　　处：《特种油气藏》2005年第5期93-94,98,共3页Special Oil & Gas Reservoirs

基　　金：中石化股份有限公司"十条龙"科技攻关项目"濮城油田稳产基础技术研究与应用"专题(课题编号:p03082-15)

摘　　要：通常对于低渗储层进行水驱油测试采用非稳定流方法,但该测试方法准确性较差,不能满足生产要求。为了更清楚地认识低渗透储层的油水运动规律,结合该类储层的地质特征,在考虑启动压力的情况下,采用稳定流方法研究低渗透储层低含水期流体的渗流特征。实验结果表明:在低含水期和高含水期,油水相对渗透率与含水率之间为非线性关系;在中含水期,随含水率的上升,油相和水相相对渗透率呈线性下降和上升。该研究成果对于提高低渗透油田的开发效果具有指导性意义。Nonsteady flow method is usually used to conduct water drive test for low permeability reservoir,but it is less accurate and cannot meet production need.In order to understand more clearly the oil and water movement in low permeability reservoirs,steady flow method is used to study the percolation characteristics in low water-cut stage by combining with geological characteristics and considering start-up pressure.The experiment result shows that,in low and high water-cut stage,the relationship between oil-water relative permeability and water-cut is nonlinear;in medium water-cut stage,as water-cut increasing,the relative permeability will be linear decreasing and increasing.This study may guide the development of low permeability oilfield.

关 键 词：低渗透储层 稳定流 渗流规律 启动压力 含水率 油水相对渗透率 

分 类 号：TE135[石油与天然气工程—油气勘探]