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文章研究了重烷基苯磺酸盐(HABS)/QK-25原油间的界面张力(IFT)。探讨了HABS种类、复配比例和浓度,醇种类和含量,Na2CO3含量和非离子表面活性剂TX-10含量对IFT的影响。结果表明,当金桐2#/南京1#=5∶5时,体系界面张力最低;最优醇类为正丁醇,但醇种类和含量对界面张力影响不显著;TX-10含量、Na2CO3含量和HABS浓度对体系界面张力的影响依次减小。 相似文献
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直链重烷基苯磺酸盐的驱油能力研究 总被引:5,自引:0,他引:5
研究了所合成的各种结构的直链烷基苯磺酸盐单剂及其复配体系在不同碱质量分数情况下对大庆四厂油/水界面张力情况。结果表明;对同一碳链长度的直链烷基苯磺酸盐,带甲基的比带乙基、异丙基和苯环上不带取代基的烷基苯磺酸盐降低界面张力的能力强;同样结构的十六碳链长的烷基苯磺酸盐又较其他碳链长度的烷基苯磺酸盐效果更优;长、短碳链的带甲基的直链烷基苯磺酸盐按一定比例复配,协同效应显著;与支链烷基苯磺酸盐复配后,体系的驱油能力、抗稀释性和抗Ca^2 、Mg^2 能力明显增加。直链与支链按一定比例复配将是烷基苯磺酸盐作为驱油用主剂的发展方向。 相似文献
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重烷基苯磺酸盐生产工艺及驱油剂性能的改进 总被引:6,自引:0,他引:6
重烷基苯磺酸盐(HABS)是一种适合驱油用的廉价表面活性剂,采用常规磺化工艺重烷基苯(HAB),磺化率一般低于70%,且产品耐碱性较差。通过研究末磺化油组成和反应条件之间的关系,发现浓度磺化(SO3/HABmol比达到1.2)能在一定程度上提高HAB的磺化率,而加入少量稀释剂在温和的磺化条件下即可使用HAB磺化率提高到80%左右,改进的HABS驱油剂配方能在很宽的碱浓度范围和较宽的表面活性剂浓度范围内使大庆原油/地层水平面张力降至超低,并能在400mg/L~500mg/L硬水介质中使大庆原油界面张力降至超低。 相似文献
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重烷基苯磺酸盐驱油剂中试产品的应用性能 总被引:5,自引:1,他引:5
在1000t/a降膜式连续磺化装置上对重烷基苯的磺化进行了中试放大,结果表明中试产品质量可靠。经复配的驱油剂中试产品能在较宽的表面活性剂浓度和碱浓度范围内与大庆原油、辽河原油及苏北原油形成超低界面张力,尤其能溶于总矿化度12×104mg/L、钙镁离子质量浓度为5000mg/L~6000mg/L的中原油田地层水中,在无碱条件下使中原油田原油/地层水的界面张力降至10-2mN/m~10-3mN/m数量级。对大庆原油和苏北原油的驱油试验表明,中试驱油剂ASP(碱-表面活性剂-聚合物)体系的驱油效率比水驱提高15%~35%OOIP(原油地层储量)。 相似文献
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张立超 《精细与专用化学品》2010,18(8):37-38
以强碱重烷基苯磺酸盐为基础原料,加入混合剂A进行复配得到弱碱表面活性剂,研究了弱碱化下界面张力的情况,室内评价结果表明,这种表面活性剂具有良好的界面活性,配制的复合体系在较宽的表面活性剂浓度和碱浓度范围可与原油形成10^-3mN/m数量级的超低界面张力。 相似文献
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当前,三次采油技术中广泛应用的驱油技术就是表面活性剂驱,一方面可以实现采收率的提高,另一方面达到当今社会对这一领域的实际需求,发展潜力巨大。在国内的采油技术相继发展和革新情况下,三元复合驱应用范围不断扩大,而且三次采油中采取磺酸盐类表面活性剂的情况逐渐增多,应用成效理想。基于对油田三次采油基本内容介绍的基础上,分析重烷基苯磺酸盐基本化学构成以及探究油田三次采油中实施重烷基苯磺酸盐的情况。 相似文献
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两种油溶性磺酸盐与重烷基苯磺酸盐复配体系的界面性能 总被引:1,自引:0,他引:1
以十二烷为油相,比较了二烷基苯磺酸盐(DAS)与α-烯烃磺酸钠(C2024AOS)两种不同结构的油溶性表面活性剂与重烷基苯磺酸盐(HABS)复配体系的界面张力.结果表明,具有苯环结构的DAS和直链型C2024AOS本身界面张力均较高.但与HABS/LAS二元体系复配之后,DAS与HABS之间在降低界面张力方面存在明显的协同效应(固定HABS与DAS质量比为3∶1,LAS含量为20%时,DAS/HABS/LAS三元体系界面张力可以达到3.28×10-3 mN/m;固定LAS含量为30%,DAS与HABS质量比为1∶1时,界面张力可以达到1.85×10-3 mN/m),而C2024AOS与HABS之间不存在明显的协同效应. 相似文献
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重烷基苯磺酸盐在石油开采工艺中扮演着重要角色,能够有效提升采收率。首先介绍了油田三次采油的具体过程,再从合成、应用体系、复配效果和配方优化四个方面介绍重烷基苯磺酸盐在三次采油中的应用。 相似文献
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高含量粉状烷基苯磺本钠的生产和应用 总被引:1,自引:0,他引:1
介绍了高含量粉状烷基苯磺酸钠(国家工业性试验项目)的生产工艺,特别分析了磺酸中和制备浓度为65% ̄72%单体的难点和解决办法,以及真空干燥,研磨和沸腾干燥成型等的要点和操作关键。还介绍了有效物含量≥90%的粉状烷基苯磺酸钠产品的性能,并对其在粉状,液体和膏状等洗涤用品中的应用进行了研究,使用效果良好。 相似文献
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A sugar amine sulfonate surfactant (SAS) was used to enhance oil recovery by chemical flooding. The interfacial tension between an SAS solution and four kinds of crude oil was determined. Oil (4) containing the largest amount of medium chain length components was the most suitable candidate because the IFT could be reduced to an ultralow range (10?3 mN/m) at optimum NaCl concentration. Emulsions consisting of oil (4) and SAS solution and the adsorption density of SAS on sandstone were studied. Compared with A37 (alkyl ether sulfate), SAS ws able to form more stable emulsions and the adsorption density was equivalent in the typical concentration range of chemical flooding. Both SAS and A37 adsorption data on sandstone followed the Langmuir isotherm model. SAS increased the apparent viscosity of KY-1500 (modified polyacrylamide) in a low concentration range and improve the viscoelasticity. A combination of SAS and KY-1500 (SP) enhanced oil recovery by 16.05 versus 14.31% (using KY-1500 alone). 相似文献
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在当前的油田开采过程中,使用到的一些化学试剂与工作的质量之间具有直接的联系。基于此,针对油田三采表活剂重烷基苯磺酸盐原料与表面活性剂合成进行分析,并且从界面张力性能评价、复配性能评价、吸附滞留性能评价以及乳化性能评价等方面了解油田三采表活剂重烷基苯磺酸盐的市场应用,为相关的调查研究提供参考。 相似文献
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George A. Smith Alicia Huggett Christian Jones Gabe Ortego 《Journal of surfactants and detergents》2021,24(6):563-574
Gemini salts of linear alkylbenzene sulfonate (LABS) were prepared by neutralization of sulfonic acid with a series of low-molecular-weight diamines in aqueous solution. The equilibrium surface activity of Gemini salts of LABS was determined by measuring the surface tension as a function of surfactant concentration to determine the critical micelle concentration (CMC), surface tension at the CMC (γCMC), and the area per molecule at the air-water interface (Å2). Electrical conductivity was measured as a function of surfactant concentration to determine the CMC and counterion binding. Dynamic surface tension was measured using a bubble pressure tensiometer to infer the rate at which the surfactant migrates to the air-water interface. Equilibrium interfacial tension against mineral oil was measured using a spinning drop tensiometer. Dynamic interfacial tension was measured using a drop volume tensiometer. The surface tension, CMC, and interfacial tension of Gemini salts of LABS decreased compared to monovalent organic and inorganic salts. The CMC decreases with increasing molecular weight of the diamine spacer group. Dynamic surface and interfacial tension of Gemini salts of LABS are lower than monovalent salts. The foam volume of Gemini salts of LABS was determined using a high shear blender test. The foam volume of Gemini salts of LABS is lower than monovalent salts and depends on the size of the spacer group. Hard-surface cleaning was measured using artificial soil applied to white Formica tiles. Soil removal was determined by optical reflectance as a function of abrasion cycles. Gemini salts of LABS show reduced hard-surface cleaning performance compared to monovalent salts. Detergency of different types of soils on cotton and polyester/cotton fabric was determined by optical reflectance measurements. Gemini salts of LABS show improved cleaning performance compared to monovalent salts. Cleaning performance increases with increasing molecular weight of the diamine spacer group. In situ neutralization of LABS with organic diamines is a simple and efficient way to prepare anionic Gemini surfactants for industrial scale applications. 相似文献
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驱油用磺酸盐型Gemini表面活性剂具有水溶性好、表面活性高、流变性能好、高增溶能力等优点,在三次采油中应用效果好。从磺化前合成材料的不同,探讨了磺酸盐型Gemini表面活性剂的合成方法。 相似文献