高注水倍数相对渗透率曲线校正方法研究及应用  

Study and Application of a Correction Method for the Relative Permeability Curve of a High Water Injection Multiple

作　　者：于洪敏[1] 王友启[1] 聂俊[1] 吕成远[1] 崔文富[2] 张莉[1] YU Hongmin;WANG Youqi;NIE Jun;LYU Chengyuan;CUI Wenfu;ZHANG Li(Sinopec Petroleum Exploration and Production Research Institute,Beijing,100083,China;Shengli Oil Production Plant of Sinopec Shengli Chl field Company,Dongying,Shandong,257051,China)

机构地区：[1]中国石化石油勘探开发研究院,北京100083 [2]中国石化胜利油田分公司胜利采油厂,山东东营257051

出　　处：《石油钻探技术》2018年第4期104-108,共5页Petroleum Drilling Techniques

基　　金：中国石化科技攻关项目"特高含水阶段水驱油藏数值模拟方法改进"(编号:P10087)和"特高含水油田开发潜力及开发策略研究"(编号:P15126)联合资助

摘　　要：为准确表征油田完整含水阶段的相对渗透率曲线特征,在对大量室内相对渗透率曲线试验资料进行统计分析的基础上,提出了高注水倍数相对渗透率曲线的表征方法,分析了高注水倍数相对渗透率曲线的变化规律,建立了将常规相对渗透率曲线校正为高注水倍数相对渗透率曲线的方法,并进行了实例应用分析。研究发现,高注水倍数相对渗透率曲线具有以含水率转折点为界的半对数分段线性特征,转折点之前油水相对渗透率不变,转折点之后残余油饱和度变小,油水相对渗透率延伸到极限值。研究结果表明,将常规相对渗透率曲线转化为高注水倍数相对渗透率曲线的方法,能够合理延续高注水阶段相对渗透率曲线的变化规律,扩展了当前室内渗流曲线的适用范围,为制定老油田开发对策提供了理论依据。In order to accurately describe the characteristics of the relative permeability curve in the whole water cut stage,a method of determining the relative permeability curve to characterize the high water injection multiple was proposed.It was based on the statistical analysis of a large number of laboratory experimental data involving relative permeability.With this method,researchers analyzed the relative permeability curve and the change rules of high water injection multiple were analyzed,.Then,the method of the conventional relative permeability curve correction to high water injection multiple relative permeability curve was established.This method has been applied in the field and the application results have been analyzed.The results showed that the relative permeability curve of high water injection multiple possesses semi-logarithmic piecewise linear characteristics bounded by a turning point in the water cut stage.Before the turning point,the oil-water relative permeability curve remains constant.After the turning point,the residual oil saturation decreases and the oil-water relative permeability curve extends to its limit according to the water injection sweeping rule.The study showed that the transformation from conventional relative permeability curve into relative permeability curve of high water injection multiple could reasonably extend the change rules of high water injection sweeping stage,and extend the applicable range of the current lab seepage curve.The results could provide a theoretical basis for the development of old oilfields.

关 键 词：中高渗透储层 注水倍数 相对渗透率 转折点 表征 校正 

分 类 号：TE312[石油与天然气工程—油气田开发工程]