应用化学 ›› 2024, Vol. 41 ›› Issue (8): 1175-1183.DOI: 10.19894/j.issn.1000-0518.240046

• 研究论文 • 上一篇    下一篇

中相微乳液形成及特性参数测定方法

张相春1(), 毛恒博2, 罗梓轩3, 魏斌3, 王靖华4   

  1. 1.遵义师范学院生物与农业科技学院,遵义 563006
    2.中国石油天然气集团有限公司长庆油田第十二采油厂,庆阳 745499
    3.西安长庆同欣石油科技有限公司,西安 710016
    4.中国石油天然气集团有限公司长庆油田勘探开发研究院,西安 710018
  • 收稿日期:2024-02-05 接受日期:2024-07-02 出版日期:2024-08-01 发布日期:2024-08-27
  • 通讯作者: 张相春
  • 基金资助:
    中国石油天然气股份有限公司重大专项(2021DJ1607)

Method for the Formation and Determination of Characteristic Parameters of Medium Phase Microemulsion

Xiang-Chun ZHANG1(), Heng-Bo MAO2, Zi-Xuan LUO3, Bin WEI3, Jing-Hua WANG4   

  1. 1.Zunyi Normal University College of Biology and Agriculture,Zunyi 563006,China
    2.The Twelfth Oil Production Plant,PetroChina Changqing Oilfield Company,Qingyang 745499,China
    3.Xi'an Changqing Tongxin Petroleum Technology Co. ,Ltd. ,Xi'an 710016,China
    4.Research Institute of Petroleum Exploration & Development,Petro China Changqing Oilfield Company,Xi'an 710018,China
  • Received:2024-02-05 Accepted:2024-07-02 Published:2024-08-01 Online:2024-08-27
  • Contact: Xiang-Chun ZHANG
  • About author:zxc54875@yeah.net
  • Supported by:
    the Major Special Project of China National Petroleum Corporation(2021DJ1607)

摘要:

中相微乳液是一种特殊的稳定分散体系,其组分主要包括表面活性剂、水和油。这种微乳液体系具有独特的三相共存特性,即能同时与剩余水相和剩余油相存在,形成复杂的相态结构,对于污染物的去除和处理具有潜在的应用价值。为了进一步指导工业生产中的微乳液配制和优化,为设计和开发新型、高效的表面活性剂提供指导,提出中相微乳液形成及特性参数测定方法。将油藏水溶液、固体碳酸钠、表面活性剂与聚合物碱水溶液及蒸馏水按照一定比例配制为成5种基础水样和4种工作水样,自制结构不同的6种烷基芳基磷酸盐,测定不同烷基链长、不同芳环位置以及不同温度影响下,中相微乳液特性参数。通过实验分析可知: 该工作水样中存在纳米级中相微乳液液珠和纳米级细小中相微乳状液液珠的2个粒径分散群,在不加碱或者加碱浓度较低时由于工作水样接触原油进而形成了中相微乳液; 水样时间为7~91 d时,原油与工作水样U0D3形成的中相微乳液液珠累计由97%降至87%,证明中相微乳液存在不稳定性; 中相微乳液耐盐能力与烷基链长、芳基位置负相关,与温度变化正相关; 增溶能力与烷基链长、芳基位置正相关,与温度变化负相关。

关键词: 石油, 磷酸盐, 中相微乳液, 特性参数

Abstract:

Mesophase micro lotion is a special stable dispersion system, whose components mainly include surfactant, water and oil. This microemulsion system has a unique three-phase coexistence characteristic, that is, it can exist with the remaining water phase and the remaining oil phase at the same time, forming a complex phase structure, which has potential application value for the removal and treatment of pollutants. In order to further guide the preparation and optimization of micro lotion in industrial production and provide guidance for the design and development of new and efficient surfactants, a method for the formation of mid phase micro lotion and the determination of its characteristic parameters was proposed. The reservoir water solution, solid sodium carbonate, surfactant, polymer alkaline water solution and distilled water were prepared into five basic water samples and four working water samples in a certain proportion, and six alkyl aryl phosphates with different structures were prepared. The characteristic parameters of mesophase micro lotion under the influence of different alkyl chain lengths, different aromatic ring positions and different temperatures were measured. It can be seen from the experimental analysis that there are two particle size dispersion groups in the working water sample, namely, the nanometer sized mesophase micro lotion liquid bead and the nanometer sized fine mesophase micro emulsion liquid bead. When no alkali is added or the concentration of alkali is low, the working water sample contacts the crude oil to form the mesophase micro lotion; When the water sample time is from 7 d to 91 d, the accumulated liquid droplets of mesophase micro lotion formed by crude oil and working water sample U0D3 are reduced from 97% to 87%, which proves that there is instability in the mesophase micro lotion, and the salt resistance of the mesophase micro lotion is negatively related to the alkyl chain length and the aryl position, and positively related to the temperature change; The solubilization ability is positively correlated with alkyl chain length and aryl position, and negatively correlated with temperature changes.

Key words: Petroleum, Phosphate, Medium phase microemulsion, Characteristic parameters

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