摘要
为了研究强碱三元复合体系对储层孔隙结构的影响,通过常规压汞实验及扫描电镜实验研究了岩心在强碱三元驱后的孔隙结构特征,对比分析了强碱三元体系渗流前后岩心的孔隙结构特征变化。结果表明,由于碱的溶蚀和聚合物在岩心中的阻塞滞留的综合作用,使得岩心的大孔道的数量增加,岩心孔隙的分选性变好,孔喉分布变得均匀,岩心孔道的弯曲迂回程度变大。碱对骨架颗粒间胶结物的溶蚀最为严重。
To explore the influence of base ASP system on the pore structure, the pore structure characteristics of the cores after the base ASP system flooding were researched by conventional mercury penetration experiment and SEM, and the characteristics change of pore structure due to the base ASP system flooding was analyzed. The results show that the dissolution of strong base and the retention of polymer solution can increase the volume of high capacity channel, and can make the core pore have better sorting features and pore throat distribution become more uniform and deepen the extent of the pore＇s detour. The cements in the interspaces of grains can be seriously dissolved by base.
出处
《当代化工》
CAS
2016年第7期1365-1368,共4页
Contemporary Chemical Industry
基金
黑龙江省教育厅科学技术研究项目
项目号:12541z004
关键词
孔隙结构
压汞实验
孔喉分布特征
pore structure
conventional mercury penetration experiment
pore throat distribution
