一种两性离子型分子膜驱油剂的合成与渗吸驱油机理研究

发布时间：2018-01-29 17:16

本文关键词： 驱油剂分子膜渗吸驱油效率　出处：《应用化工》2017年04期 　论文类型：期刊论文

【摘要】：以氯乙酸、二甲胺和氯乙醇等为原料,合成了一种两性离子型分子膜驱油剂。通过红外光谱、核磁共振、质谱,对分子膜驱油剂的结构进行了表征。考察了分子膜驱油剂的渗吸驱油机理,并利用核磁岩心技术测试了驱油剂的渗吸驱油效率。结果表明,合成的分子膜驱油分子结构表征与设计的两性离子分子式一致;渗吸实验表明,分子膜驱油剂更有利于低渗透油藏的开发,低渗透油藏渗吸速率、渗吸效率更高;渗吸机理研究表明随着分子膜驱油剂的加入,润湿指数提高,岩心表面向亲水性转变。核磁共振岩心测试表明,驱油剂在低渗透油藏驱油效率14.5%。
[Abstract]:Using chloroacetic acid, dimethylamine and chloroethanol as raw materials, an amphoteric molecular membrane oil remover was synthesized by IR, NMR and MS. The structure of molecular film flooding agent was characterized, the mechanism of oil permeation and displacement of molecular film flooding agent was investigated, and the permeability and oil displacement efficiency of oil displacement agent was tested by nuclear magnetic core technique. The molecular structure of the synthesized molecular membrane flooding oil is consistent with the designed amphoteric molecular formula. The permeation experiments show that the molecular membrane flooding agent is more favorable to the development of low permeability reservoirs, and the permeability rate and permeability efficiency are higher in low permeability reservoirs. The study of permeation mechanism shows that with the addition of molecular film flooding agent, the wetting index increases and the core surface changes to hydrophilicity. Nuclear magnetic resonance core test shows that the oil displacement efficiency of oil displacement agent in low permeability reservoir is 14.5%.
【作者单位】：中国石油大学(北京)理学院;西安石油大学化学化工学院;
【基金】：国家科技支撑计划项目(2012BAC26B00)
【分类号】：TE39
【正文快照】： 分子膜驱油剂是一种新型的油田用驱油剂,通过新的作用方式提高洗油效率[1]。在石油开发中,分子膜驱油剂通过改变储层表面润湿性,表现出更突出的提高采收率的性能[2]。本文研究合成一种应用于低渗透油藏的两性离子分子膜驱油剂(MD),测试分子膜的分子结构,考察了分子膜在岩心中

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