日用化学工业（中英文）2026，Vol.56Issue(1)：28-40,13.DOI:10.3969/j.issn.2097-2806.2026.01.004
醇醚硫酸盐(AEnS)泡排剂的应用与机理探究
Excellent temperature/salt resistant foam by alcohol ether sulfates(AEnS)for gas well deliquification
摘要
Abstract
Gas wells often encounter blockages in gas recovery channels owing to fluid accumulation during the later stages of extraction,which adversely affects subsequent recovery efforts.These undesirable conditions(e.g.,high condensate content,high temperature,and high salinity)often affect foaming agent performance.In this study,surfactants were screened using an airflow method that closely resembles field treatment method.Notably,alcohol ether sulfates(AEnS)with various polyoxyethylene(EO)units demonstrated exceptional performance in terms of liquid unloading efficiency and foam stability.At 80℃,the unloading efficiency of AEnS with two EO units(AE2S)in a high NaCl mass concentration(up to 200 g/L)and high condensate volume fraction(up to 20%)reached 84%.The dynamic surface tension and interfacial tension measured at the same temperature were used to analyze the influence of the diffusion rate and interfacial characteristics on the AEnS foam,while the viscosity and liquid film thickness measurements reflected the mechanical strength and liquid-carrying capacity.In addition,transmission electron microscopy(TEM)revealed that AE2S formed"dendritic"micellar aggregates at a high NaCl mass concentration,which significantly enhanced the viscosity and stability of the foam.The interactions among AEnS,NaCl,and H2O were analyzed using molecular dynamics,and it was confirmed from a molecular mechanics perspective that a stable structure can form among the three,contributing to the foam stability.These findings demonstrate the significant potential of the AE2S foam for gas well deliquification.关键词
醇醚硫酸盐表面活性剂/气井排液/携液率/分子动力学模拟Key words
alcohol ether sulfates surfactant/gas well deliquification/liquid unloading efficiency/molecular dynamic simulation分类
化学化工引用本文复制引用
唐海涌,霍月青,李恩泽,曹圣悌,高春新,冀创新,刘晓臣..醇醚硫酸盐(AEnS)泡排剂的应用与机理探究[J].日用化学工业（中英文）,2026,56(1):28-40,13.基金项目
山西省专利转化计划项目(202402015) （202402015）
溢多利研究基金资助项目(VTR2022) （VTR2022）
自然堂研究基金资助项目(CHANDO2022) （CHANDO2022）
