摘要
为解决无机碱/表面活性剂/聚合物三元复合驱容易结垢造成储层堵塞问题,以N-牛脂基三胺、3-氯-2-羟基丙磺酸钠、二溴乙烷为原料,合成了一种多胺类有机碱表面活性剂GAS,并与阴离子表面活性剂十二烷基磺酸钠(DSS)、及DSS与不同有机碱形成的复配体系进行了各项性能对比,最终对该有机碱表面活性剂与部分水解聚丙烯酰胺(HPAM)复配形成的二元复合驱油体系进行了驱油性能评价。结果表明:该有机碱表面活性剂临界胶束浓度为2.9×10^(-5)mol/L,可将油水界面张力降至10^(-3)数量级,且2 h后的乳化析水率仅为56%。该有机碱表面活性剂GAS与HPAM形成的驱油体系在水驱后可继续提高采收率19.50%,为实现碱表一体化在三元复合驱中的应用提供了新思路,在三次采油领域具有较好的应用前景。
In order that the problem of blockage in reservoir caused by scale formation in traditional inorganic base/surfactant/polymer compound oil drive system can be addressed,a novel polyamine Gemini anionic organic base surfactant GAS was synthesized using N-tallow triamine,3-chloro-2-hydroxy propanesulfonic acid sodium and dibromoethane as raw materials.The properties were compared with the traditional anionic surfactant sodium dodecyl sulfonate(DSS)and the compound system formed by DSS and different types of organic bases.Finally,a binary compound oil displacement system formed by the organic alkali surfactant and the partially hydrolyzed polyacrylamide(HPAM)is constructed,and the oil displacement performance of the system was evaluated.The results show that the critical micellar concentration of the polyamine organic base surfactant is 2.9×10^(-5) mol/L,which can reduce the oil-water interfacial tension to 10^(-3) order of magnitude,and the water evolution rate is 56%after 2 h,and the wettability is good,which can change the rock from oil wet to water wet.The oil displacement system formed by the organic alkali surfactant GAS and HPAM can continue to increase the oil recovery rate by 19.50%after water flooding,which provides a new idea for realizing the application of alkali and surface integration in terpolymer flooding,and has a good application prospect in the field of tertiary oil recovery.
作者
吴澳回
田雨
郑皓轩
张进
安锋涛
陈俊耀
师永民
WU Aohui;TIAN Yu;ZHENG Haoxuan;ZHANG Jin;AN Fengtao;CHEN Junyao;SHI Yongmin(Shaanxi University of Science and Technology,Shaanxi Key Laboratory of Light Chemical Auxiliaries,Xi’an 710021,China;School of Earth and Space Sciences,Peking University,Beijing 100871,China)
出处
《应用化工》
CSCD
北大核心
2024年第12期2817-2821,2825,共6页
Applied Chemical Industry
基金
国家自然科学基金(51904180)。
