大庆油田类比油藏库建立及其在可采储量评价中的应用  

Establishment of analogy reservoirs database in Daqing oilfield and its application in evaluation of recoverable reserves

作　　者：王禄春[1] 杨吉祥[1] 姚建[1] 关恒[1] WANG Luchun;YANG Jixiang;YAO Jian;GUAN Heng(Exploration&Development Research Institute of Daqing Oilfield Co.,Ltd.,PetroChina,Daqing,Heilongjiang 163712,China)

机构地区：[1]中国石油大庆油田有限责任公司勘探开发研究院,黑龙江大庆163712

出　　处：《石油地质与工程》2020年第6期71-75,共5页Petroleum Geology and Engineering

基　　金：国家科技重大专项“大庆油气持续有效发展关键技术研究与应用”子项目“特高含水后期水驱高效精准挖潜技术研究与规模应用”(2016E-0205)。

摘　　要：针对经验公式法在评价新动用储量区块采收率时计算结果偏高、适应性较差的问题,通过优选大庆油田102个开发油藏建立类比油藏数据库,应用类比法计算采收率。该方法采用递减法进行可采储量重新评价,综合应用油藏工程、数理统计、专家经验等方法分析采收率的主要影响因素,并用聚类分析方法对类比油藏数据库进行分类,利用Fisher判别分析方法建立分类油藏判别函数,用相关性分析计算目标油藏与各类比油藏的相关度,再根据相关度排序优选与目标油藏最接近的类比油藏的采收率。经实例验证,类比法计算采收率与动态法计算结果接近,并具有误差小、可靠性高、能满足生产实际需求、应用简便等特点,为合理评价新动用储量区块采收率提供了依据。In view of the problems of high values and poor adaptability of empirical formula method in evaluating the recovery factor of newly developed reserve blocks,through optimizing 102 development reservoirs in Daqing oilfield,the analogy reservoir database was established,and the analogy method was applied to calculate the recovery factor.By using the decline curve to reevaluate the recoverable reserves,based on comprehensive application of influencing factors of oil recovery by reservoir engineering,mathematical statistics and expert experience,the method classifies the analogy reservoir database by the cluster analysis method,establishes classification reservoir discriminant function by the Fisher discriminant analysis method,and calculates the target reservoir and various ratio reservoirs by the correlation analysis method.According to the correlation degree,the recovery factor of the analogy reservoir closest to the target reservoir can be optimized.The example shows that the recovery factor calculated by the analogy method is very close to that calculated by the dynamic method,with small error and high reliability,which can meet the actual production demands and is easy to be applied.It provides a basis for evaluating the recovery efficiency of newly developed reserve blocks.

关 键 词：类比油藏 可采储量 评价 应用 

分 类 号：P168[天文地球—天文学]