石油化工2024，Vol.53Issue(5)：700-704,5.DOI:10.3969/j.issn.1000-8144.2024.05.011
多轮次吞吐热采用表面活性剂配方的实验室评价
Laboratory evaluation of surfactant formula in multiple rounds of steam huff and puff
摘要
Abstract
In view of low steam displacement efficiency and decreased oil-steam ratio in heavy oil reservoirs with multiple rounds of huff and puff in Shengli Oilfield,the ratio of sodium octadecylbenzenesulfonate(SOBS)and sodium lignosulfonate(SLS)in the surfactant was screened and optimized.The performance of emulsification,viscosity reduction,interfacial activity,wettability,crude oil stripping,and oil displacement efficiency of the optimized surfactant was investigated.The adsorption capacity of crude oil on the surface of rock cores was analyzed using quartz microbalance.The experimental results show that for heavy oil in Shengli Oilfield,the optimized SOBS+SLS(mass ratio 7∶3)dosage of 0.2%(w)can reduce oil-water interfacial tension to 0.12 mN/m and viscosity to 35 mPa·s,with an interfacial tension equilibrium time for 20 min.The hydrophilicity of the rock core has also significantly improved,changing from neutral wetting to strong hydrophilic wetting.The decrease in oil-water interfacial tension increases the desorption rate of crude oil,which helps to remove oil from the reservoir and improve oil displacement efficiency.Under optimized conditions,the single-tube-physical-module oil displacement efficiency increases by 13.22 percent point.关键词
稠油/蒸汽吞吐/表面活性剂/降黏/剥离/驱油效率Key words
heavy oil/steam huff and puff/surfactant/viscosity reduction/stripping/oil displacement efficiency分类
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马爱青,于田田,徐宏光,管雪倩,邰月华,贺文媛..多轮次吞吐热采用表面活性剂配方的实验室评价[J].石油化工,2024,53(5):700-704,5.基金项目
中国石油化工股份有限公司"稠油油藏提高采收率化学剂(体系)深化研究及平台构建"项目(223202). （体系）
