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Study on Interaction between Ionic Liquids and Surfactants & Application Research in Enhanced Oil Recovery

Author: SongWeiJie
Tutor: LiuHongLai
School: East China University of Science and Technology
Course: Physical and chemical
Keywords: Surfactant Ionic liquids EOR Viscosity Interfacial tension
CLC: TE39
Type: Master's thesis
Year: 2010
Downloads: 172
Quote: 0
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Abstract


The third key to the development of enhanced oil recovery technology is developed to improve oil displacement efficiency Flooding usually improve drive efficiency in the most effective and feasible method is to reduce the interfacial tension between Flooding and crude oil. Gemini Surfactant is a new class of surfactants, join groups, two of the same or similar parent component the alkyl chains photogenic polar groups at or very close from the polar groups are connected Compared with the traditional single head-end of the single-chain surfactants, Gemini Surfactant not only has a much lower critical micelle concentration and higher surface activity. Ionic liquids by anion and cation was near room temperature liquid salts, most of its cation containing an imidazole ring, pyridine ring head group and a relatively long alkyl chain, this structure determines it has a certain amphiphilic long chain ionic liquid surfactant having superior to the conventional surfactant. We envision the two combine to form a complex solution, the use of Complex Systems synergies to further improve the activity of the surface of the solution, in order to meet the performance requirements of the Flooding. More importantly, have adjustable coupling surfactant and ionic liquids molecular structure, it is possible Accordingly, by appropriately adjusting the structure of the two control interface and bulk properties of the complex system, comprising the coupling of surface-active agents and ion The liquid complex system is expected to become a new, efficient flooding system. However, so far these studies reported in the literature. This article explores the Gemini Surfactant and new ionic liquid complex system in the tertiary oil recovery potential applications, the first study of ionic liquid on the nature of the surfactant solution. The study results showed that a small amount of ionic liquid Add can greatly improve the dissolution properties of the surfactant, to act as a cosolvent; ionic liquid can produce a significant synergistic effect between the surfactant, a small amount of ionic liquid Add i.e. water interfacial tension is reduced by more than an order of magnitude than non-ionic liquid system;, ionic liquids can change the micelle morphology of the surfactant solution, and then change the apparent viscosity of the surfactant solution. This paper also discusses the impact of ionic liquids containing polymer viscosity, ionic liquid type, concentration and traditional inorganic salts on the nature of the oil-water interface system, to explore the impact of the law, for the development of new, more efficient drive The oil system provides basic data and theoretical guidance.

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CLC: > Industrial Technology > Oil and gas industry > Oil and gas development and mining > Oil field of Applied Chemistry
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