中国石油大学学报（自然科学版）2023，Vol.47Issue(6)：72-79,8.DOI:10.3969/j.issn.1673-5005.2023.06.008
稠油油藏CO2与化学剂协同强化蒸汽驱机制
Mechanisms of synergistic enhancement of steam flooding by CO2 and chemical agents in heavy oil reservoirs
摘要
Abstract
In order to solve the problem that steam injection alone is difficult for heat transport into the deep layers of heavy oil reservoir,a steam injection technique assisted by adding carbon dioxide(CO2)and chemical agents was pro-posed and investigated in this study.This technique can not only reduce the ineffective heat dissipation of steam,but al-so can expand the heat transport distance of steam.At the same time,CO2 can be effectively captured and sequestered in the heavy oil reservoir,which is beneficial for greenhouse gas emission reduction.The results show that CO2 and chemical agents can adsorb on the surface of steam condensing medium to form a heat insulation film,which can hinder the heat exchange between steam and heat transfer medium,slow down the heat release process,increase the heat trans-port distance of the steam,and thus mobilize the heavy oil from the deep formation.The experimental results show that the steam heat loss can be reduced by 5.48%with oil recovery rate increased by 14.5%under the synergistic effect of CO2 and chemical agents.The results can provide theoretical guidance for the optimization of the gas and chemical-as-sisted steam flooding technique.关键词
蒸汽驱/稠油/二氧化碳/化学剂/深部携热Key words
steam flooding/heavy oil/carbon dioxide/chemical agent/deep heat transfer分类
能源科技引用本文复制引用
伦增珉,王海涛,张超,李宾飞,刘雅莉,李兆敏..稠油油藏CO2与化学剂协同强化蒸汽驱机制[J].中国石油大学学报（自然科学版）,2023,47(6):72-79,8.基金项目
国家自然科学基金企业创新发展联合基金项目(U20B6003) （U20B6003）
