三级注采液量优化及智能水驱流场保障方法  

Research on three-stage injection-production liquid rate optimization and intelligent water flooding flow field guarantee method

作　　者：郭文敏[1] 吕爱华[1] 蒋澎丰 徐海杰 吴京航 GUO Wenmin;LYU Aihua;JIANG Pengfeng;XU Haijie;WU Jinghang(School of Petrochemical Engineering,Changzhou University,Changzhou 213164,China)

机构地区：[1]常州大学石油化工学院,江苏常州213164

出　　处：《常州大学学报（自然科学版）》2023年第5期33-39,共7页Journal of Changzhou University：Natural Science Edition

基　　金：十三五国家科技重大专项资助项目(2017ZX05009004)。

摘　　要：油田长期注水开发易造成地下流场固化,导致注采井间优势通道定向水窜,井组间、井组内水驱程度与水驱速度匹配性失衡,注入水利用率越来越低,开发效果变差。文章基于均衡水驱理念,从注采井间渗流阻力和驱替倍数差异角度,建立了区块级“宏观液量优化”、井组级“微观液量优化”和井间级“介观液量优化”3级注采均衡水驱液量优化方法;从纵向和平面三维角度建立了智能水驱流场保障方法。现场应用结果表明,该方法较常规液量优化方法,从理论上实现了流场与剩余油富集的最优匹配,效果显著、科学实用、现场应用操作性强,较大幅度地提高了油田水驱采收率,提出了油田高含水阶段采液量优化设计方案,丰富了高含水期间提高采收率的理论方法与技术。The long-term water flooding development of the oil field has caused the solidification of the underground flow field,forming an advantageous channel between injection and production wells and even directional water channeling.The development effect becomes worse.Based on the concept of balanced water flooding and using the perspective of the difference in seepage resistance and displacement multiples between injection and production wells,the three-stage optimization method for injection and production rate optimization method were established,including the block-level“macro liquid rate optimization”,the well group-level“micro liquid rate optimization”and the inter-well level“mesoscopic liquid rate optimization”.A supported method for balanced flow field was established from the longitudinal and planar three-dimensional perspective;the field application results of the fault block show that the method is theoretically better than conventional liquid rate optimization methods.The optimal matching of the flow field and the remaining oil enrichment is achieved.The effect is remarkable,scientific and practical,and the operability of the field application is stronger.It can be more effective and can greatly improve the oilfield water flood recovery factor.The establishment of the method solves the problem of optimal design for the differential production and injection rate of the injection and production wells in the high water-cut stage of the oil field,and enriches the theory and technology of hydrodynamic equilibrium water flooding to increase recovery in the high water-cut period.

关 键 词：智能水驱 液量优化 配注配产 流场保障 

分 类 号：TE33[石油与天然气工程—油气田开发工程]