多油层强碱三元复合驱后驱油效率评价  

Evaluation of the displacement efficiency based multi-layer after ASP

作　　者：许文波[1] 王震亮[1] 宋茹娥 

机构地区：[1]西北大学地质学系,西安710069 [2]大庆油田第四采油厂,大庆230605

出　　处：《地球物理学进展》2017年第2期775-780,共6页Progress in Geophysics

摘　　要：强碱三元复合驱油技术能够提高驱油效率和扩大波及体积,大幅度提高采收率,展现出了老油田稳产接替的广阔前景.本文借助三元复合驱后取心井和新钻井资料,深化储层认识,评价驱油效率.通过室内岩心驱替、微观驱替等实验的分析,以及应用数值模拟、核磁共振、电镜检测、新钻井的电测曲线等技术手段,研究、评价强碱三元复合驱后储层不同部位的驱油效率,分析了驱油效率产生差异的影响因素.研究结果表明:层间和平面非均质性是影响三元复合驱驱油效率的主要因素,强碱三元复合驱后驱油效果与三元前对比增加了14.7个百分点,高水淹层厚度增加26.0%,岩石润湿性向亲水性转变.开展三元复合驱后驱油效率因素评价,为工业性推广过程中挖潜调整提供参考依据,进一步完善三元复合驱技术,提高采收率.The technology of ASP （alkali-surfactant-polymer） flooding can improve the oil displacement efficiency and expanding swept volume and enhance oil recovery greatly,it has a broad prospect to support the stable production for the old oil field. This article according to the data of coring wells and new drilling while after ASP flooding, deepen understanding of reservoir characteristic, evaluation of oil displacement efficiency. applied laboratory core displacement experiment,microscopic displacement experiment,nuclear magnetic resonance,electron microscopy scanning technology,etc. study and evaluating the displacement efficiency between different parts among reservoir after ASP flooding, the influence factors of oil displacement efficiency are analyzed systematically. The results show：interlayer and plane heterogeneity are the main factors affecting the oil displacement efficiency to the ASP flooding, the oil displacement effect is increased by 14.7 percentage and the thickness of high water flooded layers is increased by 26 percentage and the rock wettability has been changed to hydrophilic after ASP flooding. evaluation the factor of effecting the oil displacement efficiency to ASP flooding,in order to provide the scientific evidence in industrial promotion and adjustive measures, further improving ASP flooding technology and enhance oil recovery.

关 键 词：三元复合驱 驱油效率 影响因素 

分 类 号：P631[天文地球—地质矿产勘探]