特种油气藏2018，Vol.25Issue(2)：143-147,5.DOI:10.3969/j.issn.1006-6535.2018.02.029
聚合物驱后复合相态调驱体系提高采收率技术
Composite Profile-Control Flooding to Enhance Oil Recovery after Polymer Flooding
摘要
Abstract
The polymer solution channeling is frequent in the secondary polymer flooding due to the increasing res-ervoir heterogeneity results from polymer flooding. The displacement performance of a composite profile-control sys-tem including channeling inhibitor of polymer flooding(VPG)and a polymer(HPAM)is evaluated by laboratory double-tube and three-tube experiments with heterogeneous core samples. The recovery performance of this com-posite profile-control system is researches after polymer flooding. Research indicates that the heterogeneity of paral-lel core samples can be significantly improved by this composite profile-control system. The recovery degree of low-permeability core sample can be enhanced by 24.9% and the overall recovery degree can be increased by more than 8.0%. High-permeability core sample could be effectively plugged by this composite profile-control system, which will reduce the channeling of polymer solution in high-permeability core sample. The channeling of polymer solution in high-permeability layer can be reduced by this new system,which could increase the swept volume of polymer solution and provide certain experimental reference for the secondary polymer flooding.关键词
聚合物驱/复合相态驱/驱替实验/分流率实验Key words
polymer flooding/composite profile-control flooding/displacement experiment/fractional flow experi-ment分类
能源科技引用本文复制引用
雷锡岳,曲占庆,郝彤,叶卫保,温鸿滨..聚合物驱后复合相态调驱体系提高采收率技术[J].特种油气藏,2018,25(2):143-147,5.基金项目
国家自然科学基金青年基金项目"径向钻孔引导水力压裂裂缝定向扩展机理研究"(51404288) （51404288）
中央高校基本科研业务费专项资金"热储层水力压裂低温诱导热应力致裂机理研究"(17CX02077) （17CX02077）
