陕西科技大学学报2018，Vol.36Issue(2)：98-102,5.
低渗透油藏超前注水压敏效应实验研究
Experiment study on the pressure-sensitive effects of advanced water injection in low permeability reservoir
摘要
Abstract
The core permeability was divided into four levels for laboratory experiments on the effects of the pore-fluid pressure on permeability,porosity,pore throat radius and coordina-tion number,the results showed that the porosity was insensitive to pressure change,the change rule of pore throat radius and coordination number is similar to that of the permeabil-ity:the increasing extent of the three is very small during the pressurizing process,but the decreased degree was increasing obviously of the three during the depressurizing process.Ac-cording to the experimental result,it is irrealizable to restore the reservoir property by in-creasing the pore-fluid pressure.Advanced water injection is an important way to enhance the ultimate recovery of low permeability oilfields by maintaining the high formation pres-sure and reducing the reservoir damage caused by the formation pressure drop.关键词
超前注水/净应力/渗透率/孔隙结构Key words
advanced water injection/net stress/permeability/pore structure分类
能源科技引用本文复制引用
石爻,秦海丽,郑焱,谢晓庆,曾杨..低渗透油藏超前注水压敏效应实验研究[J].陕西科技大学学报,2018,36(2):98-102,5.基金项目
"十三五"国家科技重大专项(2016ZX05025003) （2016ZX05025003）
