胜利油区低电阻率油层多参数识别技术应用  

The Application of Multi-parameters Identification Technology to Low Resistivity Payzones in Shengli Oilfield

作　　者：黄质昌 黄新平 贺菲 范英锋 

机构地区：[1]中石化胜利石油工程有限公司测井公司,山东东营257096

出　　处：《测井技术》2013年第6期633-637,共5页Well Logging Technology

摘　　要：针对胜利油区低电阻率油层、低油/水电阻率对比度油层测井评价工作中存在的难点,提出利用多参数综合识别地层流体性质的技术思路,挖掘、利用常规测井资料(特别是自然电位和深-浅电阻率)所蕴含的丰富地层信息。阐述双自然电位重叠、双视地层水电阻率重叠的技术原理、计算方法和应用技术要点。对高地层水矿化度型、黏土附加导电型和高束缚水饱和度型低电阻率油层分别应用阿尔奇模型、阳离子交换模型和改进的混合泥质模型计算含水饱和度。定义识别地层流体性质的3个判别参数,利用测井数据处理成果与试油数据相结合,统计确定2个区块油、水层多参数判别标准。该项储层测井综合评价技术通过在胜利油区2个存在低电阻率油层区块50多口井的实际应用,效果良好。Abstract. After analysing difficulties in reservoir logging evaluation in low resistivity payzones and low oil/water resistivity contrast payzones in Shengli oilfield, the technical idea is proposed, which uses the multi-parameters to comprehensively identify formation fluid properties so as to fully use the rich stratigraphic information in conventional logging data （especially in spontaneous potential and deep-shallow resistivity log data）. The technical principles, calculation methods and key points of log applications are expounded how to do the double spontaneous potential overlapping and double apparent formation water resistivity overlapping. For the low resistivity payzones with high formation water salinity, clay additional conductivity and high irreducible water saturation, the Archie model, the cation exchange model and the improved mix shale model are applied respectively to calculate water saturation of the different low resistivity payzones. The three discriminant parameters to identify the formation fluid properties are defined. Based on the combination of logging data with oil testing data, the payzones and water reservoir multi- parameters discriminant criteria in two blocks are determined by statistical method. This comprehensive reservoir logging evaluation technique is applied to reservoir evaluation practically more than fifty wells in two blocks in Shengli oilfield where there exist the low resistivity payzones, and the application effect of which is very fine.

关 键 词：关键词 测井评价 低电阻率 双自然电位 双视地层水电阻率 含水饱和度 解释模型 多参数 油水识别 

分 类 号：P631.81[天文地球—地质矿产勘探]