日用化学工业（中英文）2025，Vol.55Issue(7)：825-830,6.DOI:10.3969/j.issn.2097-2806.2025.07.002
适用于川西中浅层气藏的抗凝析油泡排剂研制及室内性能评价
Development and laboratory evaluation of anti-condensate oil foaming agent for shallow gas reservoirs in western Sichuan
摘要
Abstract
The foam drainage gas recovery technique in natural gas production is widely recognized as the most cost-effective and efficient method for removing the water accumulated at the well bottom,which is an essential measure to ensure stable production for low-pressure and low-productivity gas wells.However,the bottomhole liquids are often contaminated by condensate oil,resulting in reduced effectiveness of conventional foaming agents.In this work,the foam properties of eight surfactants were investigated and the effects of oil content and temperature on their foam properties were also examined.The zwitterionic surfactant CAB,which demonstrated relatively good resistance to oil,was selected as the primary component of the foaming agent.By combining CAB with a fluorocarbon surfactant and a foam stabilizer,a new anti-condensate oil foaming agent SCU-7 was developed.The flowability,foaming performance at different oil content,and the foaming performance under simulated high-temperature and high-pressure conditions at the bottom were analyzed to explore the anti-oil mechanism of SCU-7.The results showed that,at 60℃under atmospheric pressure,with an oil content of 10%,a concentration of 0.3%SCU-7 achieved the foam height of 167 mm in simulated saline water with total salinity of 4×104 mg/L;the foam height was 135 mm at 3 min;after 15 min,the liquid-carrying capacity was up to 206 mL,demonstrating excellent overall performance.However,when the oil content was increased to 30%,the overall foaming performance declined to some extent.Under high pressure of 6 MPa and at temperatures of 80℃,100℃and 120℃,SCU-7 could generate dense foams in simulated saline water.Mechanism analysis indicated that CAB exhibited excellent ability of surface tension reduction in simulated saline water;mixing CAB with fluorocarbon surfactant could further decrease surface tension,while the presence of foam stabilizer could enhance the strength of foam film and thus improve foaming performance.Therefore,SCU-7 demonstrated good foaming performance with improved anti-oil properties.关键词
泡排剂/表面活性剂/泡沫性能/抗凝析油Key words
foaming agent/surfactant/foaming performance/anti-condensation oil分类
化学化工引用本文复制引用
鲁光亮,唐雷,田文忠,李嘉明,冯玉军,殷鸿尧..适用于川西中浅层气藏的抗凝析油泡排剂研制及室内性能评价[J].日用化学工业（中英文）,2025,55(7):825-830,6.基金项目
国家科技重大专项(2016ZX05048-004-007) （2016ZX05048-004-007）
国家自然科学基金(21773161) （21773161）
