表面活性剂化学分析及提高油田采收率实验研究  

Chemical Analysis of Surfactants and Experimental Study on Improving Oilfield Recovery

作　　者：高兴军[1] 张雷 李锦源 周晓 赵欣欣 吕涛[4] GAO Xing-jun;ZHANG Lei;LI Jin-yuan;ZHOU Xiao;ZHAO Xin-xin;LYU Tao(Hengshan Oil Production Plant of Yanchang Oilfield Co.,Ltd.,Yulin Shaanxi 719101,China;Changqing Oilfield Branch Second Gas Production Plant,Yulin Shaanxi 719000,China;Xi'an Alberta Environmental Analysis and Testing Technology Co.,Ltd.,Xi'an Shaanxi 710000,China;Xi'an Shiyou University,Xi'an Shaanxi 710065,China)

机构地区：[1]延长油田股份有限公司横山采油厂,陕西榆林719101 [2]长庆油田分公司第二采气厂,陕西榆林719000 [3]西安阿伯塔资环分析测试技术有限公司,陕西西安710000 [4]西安石油大学,陕西西安710065

出　　处：《当代化工》2023年第12期2931-2934,共4页Contemporary Chemical Industry

基　　金：国家自然科学基金青年基金项目,多孔介质内油-水-岩石多界面体系微观作用机理及应用研究(项目编号:51606222)。

摘　　要：为解决传统油田表面活性剂的耐盐和耐温问题以及更好地适应低渗透油藏的特殊条件,采用10-溴癸酸、丙酮和二甲胺为原料,在实验室条件下合成了p H敏感型表面活性剂TCHJ,其合成收率为64.21%。在0.2%的主剂质量分数下,结合p H敏感型表面活性剂TCHJ和非离子型表面活性剂AEO-7(质量比为1∶2),形成了驱油复合体系,能将油水界面张力降至8.34×10^(3)N·m^(-1)。该体系在油田实际油藏温度和矿化度条件下均展现出优异性能。室内驱油实验表明,该体系能提升原油采收率8.57%。根据现场先导试验的反馈,采用该复配体系策略,试验井组的日均增油量为1.68 t,且平均综合含水率降低了18.57%。这证明了该复合体系在提高采收率方面的有效性,为该技术的进一步创新和推广提供了理论和实践支撑。In order to solve the problem of salt and temperature resistance of traditional oilfield surfactants,and to better adapt to the special conditions of low-permeability reservoirs,10-bromodecanoic acid,acetone and dimethylamine were used as raw materials in this study.A pH-sensitive surfactant TCHJ was synthesized with yield of 64.21%.At mass fraction of 0.2%of the main agent,combined with pH-sensitive surfactant TCHJ and non-ionic surfactant AEO-7(mass ratio 1∶2),an oil-displacement composite system was formed,which can reduce the oil-water interfacial tension to 8.34×10^(3) N·m^(-1).The system exhibited excellent performance under the conditions of actual reservoir temperature and salinity in the oil field.Indoor oil displacement experiments showed that the system could enhance oil recovery by 8.57%.According to the feedback from the field pilot test,using the compound system strategy in this study,the average daily oil increase of the test well group was 1.68 t,and the average comprehensive water cut was reduced by 18.57%.This proved the effectiveness of the composite system in improving oil recovery,and could provide theoretical and practical support for the further innovation and promotion of this technology.

关 键 词：表面活性剂 致密砂岩 驱油 采收率 

分 类 号：TE348[石油与天然气工程—油气田开发工程]