耐盐型阴/阳离子表面活性剂高效渗吸体系构筑及性能评价  

Construction and Evaluation on Efficient Imbibition System Composed of Salt-Resistant Anionic/Cationic Surfactant

作　　者：吕海燕[1,2] 张翔[1,2] 问晓勇 吕小明 侯昆朋[3] 吴海荣 LYU Haiyan;ZHANG Xiang;WEN Xiaoyong;LYU Xiaoming;HOU Kunpeng;WU Hairong(Research Institute of Oil&Gas Technology,PetroChina Changqing Oilfield Branch,Xi’an Shaanxi 710021,China;National Engineering Laboratory for Exploration and Development of Low Permeability Oil and Gas Fields,Xi’an Shaanxi 710021,China;China University of Petroleum-Beijing,Beijing 102249,China)

机构地区：[1]中国石油长庆油田分公司油气工艺研究院,陕西西安710021 [2]低渗透油气田勘探开发国家工程实验室,陕西西安710021 [3]中国石油大学(北京),北京102249

出　　处：《当代化工》2024年第5期1143-1147,共5页Contemporary Chemical Industry

基　　金：国家自然科学基金项目(项目编号:22302229)。

摘　　要：针对长庆安塞油田油藏条件,构建了阴离子表活剂APGSHS和双十八烷基阳离子表活剂复配的耐盐型高效渗吸体系。在矿化度为74.11 g·L^(-1)、温度为50℃的条件下,通过界面张力优选出适合该油田的最佳渗吸体系,并研究了该渗吸体系的润湿性能、乳化性能以及渗吸采油效果。结果表明:复配体系可将油水界面张力维持在10^(-3)mN·m^(-1)数量级;同时,该体系具有优异的润湿反转能力以及较佳的乳化性能,该复配体系针对0.3~30.0 mD的岩心渗吸采收率可达40%以上。According to the reservoir conditions of Ansai Oilfield in Changqing,a salt-tolerant and high-efficiency imbibition system composed of anionic surfactant APGSHS and dioctadecyl cationic surfactant was constructed.Under the condition of 74.11 g·L^(-1)salinity and 50℃,the interfacial tension was used to select the most suitable reservoir imbibition system for the oilfield.Then the wettability,emulsification performance and imbibition oil recovery efficiency of the system were studied.The results showed that the interfacial tension of the composite system could maintain the oil-water interfacial tension in the order of 10^(-3)mN·m^(-1).Meanwhile,the system displayed excellent wetting alternation ability and better emulsification performance,and the recovery ratio anion and cation composite system for 0.3~30.0 mD core imbibition recovery rate could reach more than 40%.The current work provides theoretical guidance for the development of low permeability reservoir with high salinity.

关 键 词：低渗油藏 表面活性剂 渗吸作用 界面张力 石油 界面 

分 类 号：TQ423[化学工程] TE357.46[石油与天然气工程—油气田开发工程]