不同粒径组合纳米聚合物微球调驱性能研究  

The Study on the Profile Control and Flooding Performance of Nano-polymer Microspheres with Different Particle Sizes

作　　者：杨欢[1] 黄志学 张满 郑力军[3] 马波[3] 于小荣[1] 刘锐[4] Yang Huan;Huang Zhixue;Zhang Man;Zheng Lijun;Ma Bo;Yu Xiaorong;Liu Rui(College of Chemistry&Environmental Engineering,Yangtze University,Jingzhou 434023,Hubei;No.5 Oil Production Plant,Changqing Oilfield Company,PetroChina,Yulin 718615,Shaanxi;Research Institute of Oil&Gas Technology,Changqing Oilfield Company,PetroChina,Xi’an 710018,Shaanxi;Petroleum Engineering School,Southwest Petroleum University,Chengdu 637001,Sichuan)

机构地区：[1]长江大学化学与环境工程学院,湖北荆州434023 [2]中国石油长庆油田分公司第五采油厂,陕西榆林718615 [3]中国石油长庆油田分公司油气工艺研究院,陕西西安710018 [4]西南石油大学石油工程学院,四川成都637001

出　　处：《长江大学学报（自然科学版）》2020年第5期36-41,I0002,I0003,共8页Journal of Yangtze University(Natural Science Edition)

基　　金：国家自然科学基金项目“砾岩油藏复合驱协作增效聚表二元体系的构建及微观驱油机理”(51904255);湖北省教育厅科学技术研究项目“双亲磁响应纳米破乳剂的设计、制备及其处理含油污水机理研究”(Q20181309);长江大学大学生创新创业训练项目“抗温抗盐聚丙烯酰胺的制备及性能评价”(2019134)。

摘　　要：为了提高聚合物微球在油藏环境中的适应性,实现油藏深部调驱,以纳米聚合物微球为研究对象,研究了不同粒径组合纳米聚合物微球在油藏环境中的水化膨胀性、封堵性和驱油性。结果表明,纳米聚合物微球的水化膨胀速率与水化时间成正比,随着水化时间的延长,不同粒径组合纳米聚合物微球比单一粒径纳米聚合物微球水化性能好;100nm+300nm组合纳米聚合物微球对高渗透率的填砂管封堵效果最好,封堵率可达90.38%。不同粒径组合纳米聚合物微球在高、低渗透率岩心中的驱油效果均比单一粒径纳米聚合物微球的驱油效果好。该研究可为聚合物微球在现场中的应用提供理论参考。In order to improve the adaptability of polymer microspheres in reservoir environment and realize deep profile control and flooding of reservoirs,nano-polymer microspheres were taken as the research object to study the hydration expansion,plugging and oil displacement properties of polymer microspheres with different particle sizes in reservoir environment.The results show that the hydration expansion rate of the nano-polymer microspheres is directly proportional to the hydration time.With the extension of the hydration time,the hydration performance of the nano-polymer microspheres with different particle sizes is better than that of nano-polymer microspheres with the single particle size.The combination of 100nm and 300nm nano-polymer microspheres has the best plugging effect on the sand filling pipe with high permeability,and the plugging rate can reach 90.38%.The oil displacement effect of nano-polymer microspheres with different particle sizes in high and low permeability cores is better than that of nano-polymer microspheres with single particle size.The study can provide theoretical reference for the application of polymer microspheres in the field.

关 键 词：纳米聚合物微球 粒径组合 水化膨胀 封堵率 深部调驱 

分 类 号：TE357.46[石油与天然气工程—油气田开发工程]