納米材料對蠕蟲狀膠束溶液流變性改性機理研究
本文關鍵詞:納米材料對蠕蟲狀膠束溶液流變性改性機理研究 出處:《西安石油大學》2017年碩士論文 論文類型:學位論文
【摘要】:表面活性劑單分子一定條件下可以聚集形成三維網(wǎng)狀結構的蠕蟲狀膠束粘彈性流體,本文將六種具有不同性質(zhì)的納米材料通過機械攪拌法和超聲波振蕩法分別均勻分散于濃度同為3%的陽離子表面活性劑十六烷基三甲基氯化銨CTAC和陰離子表面活性劑N-甲基油酰氨基乙基磺酸鈉J-20,靜置一個月后發(fā)現(xiàn)經(jīng)過表面功能化處理過的連接有羥基-OH的納米材料分散穩(wěn)定性良好;利用宏觀流變性實驗和冷凍蝕刻電鏡微觀近距離觀察相結合深入研究了不同種類管狀納米碳對蠕蟲狀膠束粘彈性流體的改性機理。結果表明,適量的碳管較長、表面羥基-OH含量較多的管狀納米碳顯著增大4%CTAC/2%NaSal摩爾比為1:1的蠕蟲狀膠束溶液粘彈性;pH/KCl對陰離子表面活性劑J-20溶液蠕蟲狀膠束的形成有明顯影響,3%J-20溶液pH越趨向于堿性區(qū),體系耐鹽性能越強,且pH對3%J-20/3%KCl體系在中性附近有顯著影響,類似一種pH刺激響應型膠束流體;對于納米-膠束流體,pH/KCl可以明顯影響體系分散穩(wěn)定性,偏堿區(qū)(pH11)和偏酸區(qū)(pH6)分散穩(wěn)定性較差,鹽濃度越小越不利于納米分散,且在偏堿區(qū)納米改善膠束粘彈性越明顯;制備一種納米復合陰離子膠束清潔壓裂液,管狀納米碳對陰離子膠束溶液粘彈性有增效作用且抗濾失性能良好,各項壓裂液性能評價結果優(yōu)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.
【學位授予單位】:西安石油大學
【學位級別】:碩士
【學位授予年份】:2017
【分類號】:TE357.12;TB383.1
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