石油地质与工程2024，Vol.38Issue(4)：11-16,6.
王集泌162区块非均质稠油油藏化学驱油体系评价
Evaluation of chemical flooding system of heterogeneous heavy oil reservoir in Wangji B162 block
苏建栋 1郭艳 1李浩 1陈磊 1李梦晨 1王熙 1刘艳华 1束华东1
作者信息
- 1. 河南省提高石油采收率重点实验室,河南南阳 473132||中国石化河南油田分公司勘探开发研究院,河南南阳 473132
- 折叠
摘要
Abstract
According to the geological characteristics of the common heavy oil reservoir in Wangji B162 block,in order to further enhance oil recovery,the chemical flooding system was studied,and a chemical oil recovery system evaluation was conducted based on factors such as polymer viscosity,viscosity tempera-ture,long-term thermal stability,and the influence of mineralization on viscosity.The results showed that:①The selected polymer aged for 180 days at reservoir temperature(56.5 ℃),with a viscosity retention rate of 88.1％;② When the optimal concentration of surfactant is 500-3 000 mg/L,the interfacial tension can reach an ultra-low order of 10-4 mN/m;when it's above 1 000 mg/L,the interfacial tension of the polymer/surfactant flooding system can reach the order of 10-3 mN/m;③The single core oil displacement experiment shows that the heterogeneous composite flooding system(polymer+surfactant+PPG)has an in-creased recovery rate of 10.63％,4.51％,and 3.74％compared to the single polymer,binary composite system(polymer+surfactant),and heterogeneous system(polymer+PPG)respectively;④The double tube parallel core experiment shows that when the injection amount is the same,scheme 3 using a heteroge-neous system for single injection into high permeability layers increases the recovery rate by 3.9％compared to scheme 2 using high and low permeability layers for simultaneous injection;The total slug volume is 0.6 PV,and the main slug adopts a multi-stage slug combination scheme 4,which increases the recovery rate by 3.6％compared to scheme 3 with a single main slug;1 000 mg/L·PV increases oil recovery by 9.01％,with better enhanced oil recovery and economic benefit compared with other schemes.关键词
普通稠油/非均相复合驱/多级段塞组合/渗透率级差/提高采收率Key words
normal heavy oil/heterogeneous composite flooding/multiple slug combination displacement/permeability difference/enhanced oil recovery分类
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苏建栋,郭艳,李浩,陈磊,李梦晨,王熙,刘艳华,束华东..王集泌162区块非均质稠油油藏化学驱油体系评价[J].石油地质与工程,2024,38(4):11-16,6.
