利用玻璃型微模型在均质和非均质多孔介质中注聚合物提高采收率的实验研究  

Experimental study on improving oil recovery by injecting polymer into homogeneous and heterogeneous porous media using glass-type micromodels

作　　者：焦卫华[1] 李艳[1] 吴利超 罗莹 JIAO Weihua;LI Yan;WU Lichao;LUO Ying(Yanchang Oilfield Co.,Ltd.,Yulin 718600,Shaanxi China)

机构地区：[1]延长油田股份有限公司定边采油厂,陕西榆林718600

出　　处：《粘接》2022年第2期79-83,共5页Adhesion

摘　　要：利用玻璃型微模型进行了一系列聚合物驱运行。制作的微模型具有均匀和非均匀的流型,在开始注入之前,他们被水平放置,并用从油田采集的重质原油样品饱和。研究使用了3种聚合物,整个过程用高分辨率摄像机连续拍摄,以监测微模型中聚合物溶液的位移。研究了聚合物溶液浓度、注入流量和非均质性等不同参数对聚合物驱动态的影响。在使用的规则均质和非均质流型的基础上,根据砂岩薄片(露头)的图像创建了模拟砂岩储层的非均质流型,并在注入过程中观察到聚合物前缘的移动。In this research work,a set of polymer flooding runs were carried out using glass-type micromodels.The micromodels were fabricated to have homogeneous and heterogeneous flow patterns.They were positioned horizontally and saturated with a heavy crude oil sample taken from an oil field before starting the injection.Three commercial polymers were used in this study while the whole process was photographed continuously with a high-resolution camera to monitor the displacement of polymer solution in the micromodels.As a part of this study,the effect of different parameters including polymer solution concentration,injection flow rate and heterogeneity on performance of polymer flooding were investigated.On top of the regular homogeneous and heterogeneous flow patterns used in this study,a heterogeneous flow pattern mimicking sandstone reservoirs was created based on the image of a thin section of a sandstone(outcrop)and polymer front movement was observed during injection.

关 键 词：聚合物注入 非均质性 玻璃型微模型 扫掠效率 采收率 聚合物驱 

分 类 号：TE357.9[石油与天然气工程—油气田开发工程] TQ171[化学工程—玻璃工业]