特种油气藏2024，Vol.31Issue(3)：1-10,10.DOI:10.3969/j.issn.1006-6535.2024.03.001
纳米流体提高采收率机理研究现状
Research Status on Mechanism of Enhanced Oil Recovery by Nanofluids
摘要
Abstract
As a new technology to enhance oil recovery,nanofluid flooding has advantages over traditional surfac-tants and polymer solutions flooding.However,the current research on the mechanism of this technology is not sys-tematic.Based on the research progress of nanofluids at home and abroad,this study summarizes the main EOR mechanism of nanofluid flooding.Meanwhile,the current difficulties faced by this technology and the future re-search direction are pointed out.The results show that the EOR mechanism of nanofluids flooding includes:reduc-ing oil-water interfacial tension;forming a wedge-shaped film in three-phase(oil-water-solid)zone,which re-sults in the pressure of structural separation;improving the mobility ratio to expand the swept area;altering the wet-tability of rock;enhancing foam stability;reducing injection pressure and selecting the porous channels of water plugging.Future research can focus on improving the stability of nanofluids,reducing costs,conducting synergistic studies on the mechanisms of enhanced oil recovery,and developing efficient nano-flooding systems.This study lays a theoretical and experimental foundation for the large-scale application of nanofluids in enhanced oil recovery process.关键词
纳米流体/提高采收率/界面张力/结构分离压力/润湿性Key words
nanofluids/enhance oil recovery/interfacial tension/pressures of structural separation/wettability分类
能源科技引用本文复制引用
郝龙,侯吉瑞,梁拓,闻宇晨,屈鸣..纳米流体提高采收率机理研究现状[J].特种油气藏,2024,31(3):1-10,10.基金项目
国家自然科学基金"低渗特低渗油藏片状纳米材料-微米自适应桥接颗粒协同控窜-调流-驱油理论研究"(52174046) （52174046）
中国石油科技创新基金"特低渗油藏智能片状纳米材料调驱作用机理研究"(2021DQ02-0202) （2021DQ02-0202）
