成都理工大学学报（自然科学版）2017，Vol.44Issue(2)：172-177,6.DOI:10.3969/j.issn.1671-9727.2017.02.06
聚合物驱不可入孔隙体积效应的室内研究及应用评价
Experimental study and application evaluation of inaccessible pore volume for polymer flooding
摘要
Abstract
Based on the principle of polymer miscible displacement and diffusion percolation,the inaccessible pore volume (IPV) is determined by using double polymer flooding slug profile method from 6 drilling cores in Changqing Jurassic Yan-10 reservoir,and its influence on polymer flooding effect is thereby investigated.Studied results indicate that the value of IPV for 6 drilling cores ranges from 20.6％ to 27.9％ with average value of 24.8％.It reveals that the bigger the permeability of the drilling cores is,the smaller the IPV value is.The two parameters between the value of IPV and drilling core permeability show a significant negative linear correlation without significant relationship between the value of IPV and drilling core porosity.Inaccessible pore volume reflects the matching degree between the size of polymer molecular mass and reservoir pore throat size.Polymer flooding test of Yan-10 reservoir in M Block shows that the existence of inaccessible pore volume effect in the process of polymer flooding is conducive to enhance oil displacement efficiency by increasing the injection volume or increasing the protection slug properly in field injection process design.Therefore,it is necessary to consider the inaccessible pore volume effect in the development of polymer flooding scheme.关键词
不可入孔隙体积/双段塞浓度剖面/聚合物驱/室内研究/应用Key words
inaccessible pore volume/effluent concentration profile/polymer flooding/experimental study/field application分类
能源科技引用本文复制引用
吴天江,杨海恩,赵燕红,陈荣环..聚合物驱不可入孔隙体积效应的室内研究及应用评价[J].成都理工大学学报（自然科学版）,2017,44(2):172-177,6.基金项目
国家科技重大专项(2011ZX05013-005) （2011ZX05013-005）
