常州大学学报（自然科学版）2024，Vol.36Issue(2)：10-18,9.DOI:10.3969/j.issn.2095-0411.2024.02.002
多元热流体吞吐开发稠油乳状液稳定性机理
Stability mechanism of heavy oil emulsion during cyclic multi-thermal fluids injection process
摘要
Abstract
Heavy oil holds a pivotal position in the global energy landscape and plays a significant role in meeting the increasing energy demand worldwide.The utilization of multi-thermal fluids(compri-sing supercritical steam,CO2,and N2)in cyclic solvent injection(CSI)techniques overcomes the challenges associated with conventional steam flooding techniques such as high energy consumption,low heat utilization and poor performance,and becomes a promising technique for enhancing heavy oil recovery.However,the presence of surface-active substances in heavy oil and the complex composi-tion of multi-thermal fluids leads to the formation of complex and stable emulsions during the cyclic multi-thermal fluids injection process,which poses challenges to subsequent demulsification.This study first elucidates the properties of heavy oil based on heavy oil component analysis,microscopic examination of asphaltene morphology and functional groups.Subsequently,the stability of emulsion generated during the cyclic multi-thermal fluids injection process is investigated based on water seg-mented ratio and particle size distribution of emulsion droplets.Furthermore,the stability mecha-nisms of emulsion are studied using scanning electron microscopy and infrared spectroscopy tech-niques.Finally,the effect of the polyether-type demulsifier on facilitating the dehydration of heavy oil emulsion is evaluated.The findings of this research provide theoretical insights to guide the develop-ment of efficient demulsifiers for cyclic multi-thermal fluid injection process.关键词
多元热流体/稠油乳状液/稠油采收率/多元热流体吞吐/破乳剂Key words
multi-thermal fluids/heavy oil emulsion/heavy oil recovery/cyclic multi-thermal fluids inj ection/demulsifier分类
医药卫生引用本文复制引用
赵静,文庆,梁启凡,张琦,彭明国..多元热流体吞吐开发稠油乳状液稳定性机理[J].常州大学学报（自然科学版）,2024,36(2):10-18,9.基金项目
中国石油-常州大学创新联合体资助项目(2021DQ06) （2021DQ06）
国家自然科学基金青年基金资助项目(52304020,12302329). （52304020,12302329）
