大港油田油水同层分级评价方法  

Evaluation Method of Oil-Water Layer Stratification in Dagang Oilfield

作　　者：李进 柴公权 陈晓明 侯秀川 薛宝印 龚守捍 LI Jin;CHAI Gongquan;CHEN Xiaoming;HOU Xiuchuan;XUE Baoyin;GONG Shouhan(Tianjin Branch,China National Logging Corporation,Tianjin 300280,China;Exploration Division,PetroChina Dagang Oilfield Company,Tianjin 300280,China)

机构地区：[1]中国石油集团测井有限公司天津分公司,天津300280 [2]中国石油大港油田公司勘探事业部,天津300280

出　　处：《测井技术》2023年第3期357-363,共7页Well Logging Technology

基　　金：中国石油集团测井有限公司科学研究与技术开发项目“测井油藏与地质研究”(CNLC2022-8B04)。

摘　　要：大港油田开发到中后期,典型的油气层逐渐减少,具有工业油流价值的油水同层作为效益开发的重要补充和油田的主要增产方式日益受到重视与关注。针对该类油水同层的测井识别与评价问题,以相对渗透率理论为基础,结合岩石物理实验分析开展深入研究;引入费歇尔数理判别方法,创新产能评价指标,建立一套以饱和度下限动态分析以及多参数聚类为核心的油水同层分级评价方法。该方法实现了对测井资料的精细化分析,明显提高了测井评价精度,有效提升了油田老井挖潜的成功率,应用效果良好。In the middle and late period of Dagang oilfield development,the typical oil and gas layers gradually decrease,and the oil-water strata with industrial oil flow value,as an important supplement to benefit development and the main way of increasing oil production,has attracted the attention of petroleum workers.Aiming at the problem of logging identification and evaluation of this kind of oil and water in the same layer,on the one hand,this paper conducts in-depth research based on the relative permeability theory and combined with rock physical experiment analysis.On the other hand,it introduces Fisher mathematical discriminant method,innovates productivity evaluation index,and establishes a set of oil and water in the same layer classification evaluation method based on dynamic saturation lower limit analysis and multi-parameter clustering.It not only realizes the fine analysis of logging data,obviously improves the accuracy of logging evaluation,but also effectively improves the success rate of rechecking measures of old wells in the oilfield,and the application effect is good.

关 键 词：油水同层分级评价 饱和度动态下限 多参数聚类分析 可动烃含量 费歇尔判别 

分 类 号：P631.84[天文地球—地质矿产勘探]