纳米材料对蠕虫状胶束溶液流变性改性机理研究

发布时间：2018-01-17 01:10

本文关键词：纳米材料对蠕虫状胶束溶液流变性改性机理研究　出处：《西安石油大学》2017年硕士论文　论文类型：学位论文

【摘要】：表面活性剂单分子一定条件下可以聚集形成三维网状结构的蠕虫状胶束粘弹性流体,本文将六种具有不同性质的纳米材料通过机械搅拌法和超声波振荡法分别均匀分散于浓度同为3%的阳离子表面活性剂十六烷基三甲基氯化铵CTAC和阴离子表面活性剂N-甲基油酰氨基乙基磺酸钠J-20,静置一个月后发现经过表面功能化处理过的连接有羟基-OH的纳米材料分散稳定性良好;利用宏观流变性实验和冷冻蚀刻电镜微观近距离观察相结合深入研究了不同种类管状纳米碳对蠕虫状胶束粘弹性流体的改性机理。结果表明,适量的碳管较长、表面羟基-OH含量较多的管状纳米碳显著增大4%CTAC/2%NaSal摩尔比为1:1的蠕虫状胶束溶液粘弹性;pH/KCl对阴离子表面活性剂J-20溶液蠕虫状胶束的形成有明显影响,3%J-20溶液pH越趋向于碱性区,体系耐盐性能越强,且pH对3%J-20/3%KCl体系在中性附近有显著影响,类似一种pH刺激响应型胶束流体;对于纳米-胶束流体,pH/KCl可以明显影响体系分散稳定性,偏碱区(pH11)和偏酸区(pH6)分散稳定性较差,盐浓度越小越不利于纳米分散,且在偏碱区纳米改善胶束粘弹性越明显;制备一种纳米复合阴离子胶束清洁压裂液,管状纳米碳对阴离子胶束溶液粘弹性有增效作用且抗滤失性能良好,各项压裂液性能评价结果优良。
[Abstract]:Accumulation of wormlike micelles of viscoelastic fluid in a three-dimensional network structure can surfactant monomer under certain conditions, the six kinds of different nano materials by mechanical stirring and ultrasonic oscillation were uniformly dispersed in the same concentration as 3% of cationic surfactant was sixteen alkyl three methyl ammonium chloride CTAC and anionic surfactant N- oil methyl amido ethyl sulfonate J-20, standing for a month after the discovery of nanomaterials after surface functionalization of treated with hydroxyl -OH good dispersion stability; using rheology experiment and freeze etching depth study of the mechanism of modification of different kinds of carbon nano tube wormlike micelles of viscoelastic fluid in micro electron microscope from the observation of combination. The results show that the longer the amount of carbon nanotubes, carbon nano tube -OH more surface hydroxyl groups increased significantly 4%CTAC/2%NaSal The molar ratio of viscoelastic wormlike micellar solution of 1:1; pH/KCl has obvious influence on the formation of anionic surfactant J-20 solution of wormlike micelle solution, 3%J-20 pH tend to alkaline salt tolerance zone, the system is stronger, and the pH of the 3%J-20/3%KCl system have a significant impact in the near neutral, similar to a pH stimulus responsive micelle fluid for nano - micelles; fluid, pH/KCl can significantly affect the dispersion stability, alkali area (pH11) and partial acid region (pH6) dispersion stability is poor, the salt concentration is smaller for the nano dispersion, and in the alkaline region to improve the nano micelle viscoelasticity is obvious; the preparation of a nano composite anion micelle cleaning fracturing fluid, tubular carbon nano synergism and anti filtration good performance of anionic micellar solution of viscoelastic properties of the fracturing fluid, the evaluation results are excellent.

【学位授予单位】：西安石油大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TE357.12;TB383.1

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