Effects of branching in hexadecylbenzene sulfonate isomers on interfacial tension behavior in oil/alkali systems

Yang, Jean; Qiao, Weihong; Li, Zongshi; Liu, Cheng

doi:10.1016/j.fuel.2005.01.014

Cited by 40 publications

(51 citation statements)

References 15 publications

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“…Chemical methods are generally used to decrease the IFT between oil and used water, and after water flooding to increase the oil recovery (Yang et al 2005). Chemical recovery methods include polymer flooding, surfactant flooding, alkaline flooding, and the composite, alkali-surfactant-polymer (ASP) flooding.…”

Section: Chemical Eormentioning

confidence: 99%

“…These surfactants also helps to reverse the rock wettability by changing the oil-wet rock to water-wet, emulsify the oil and help the oil to come out of the rock and mobilize the entrapped oil in porous rock (Taylor and Nasr-El-din 1996;Li et al 2000;Nedjhioui et al 2005;Mandal and Ohja 2008). Explicitly, surfactants of specific structure and high purity are required (Yang et al 2005). Due to versatility, currently Gemini surfactants have acquired more attention.…”

Section: Chemical Eormentioning

confidence: 99%

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Enhanced Oil Recovery Techniques for Indian Reservoirs

2015

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The overall oil production worldwide has declined due to the increase in maturity of the oil reservoirs. In developing countries like India, the oil production and demand plays a crucial role for the development of economy of the country. However, the domestic crude oil production is insufficient to meet the requirement for energy. Thus, there is a big challenge to minimize the gap between the demand and supply for crude oil. Several methods to enhance oil recovery have been developed to increase the production from matured reservoirs and are referred to as enhanced oil recovery (EOR) methods. This chapter discusses in detail about the various EOR methods, their applicability, and the screening criteria for various reservoir types. The EOR methods are further discussed in Indian contexts. This chapter also summarizes the details of various oilfields in India. The chapter will in general, help to understand the recent trends and the need of EOR for Indian oil reservoirs.

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Section: Chemical Eormentioning

confidence: 99%

Section: Chemical Eormentioning

confidence: 99%

Enhanced Oil Recovery Techniques for Indian Reservoirs

2015

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“…Many researchers have reported its usage in the oil recovery (Chen et al 2012;Hou et al 2001). It was found that (Yang et al 2005) hexadecylbenzene sulfonate could reduce the interfacial tension ultra-low values at low alkali concentrations when a phenyl group is located near the center of the alkyl chain.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of hexadecylbenzene sulfonate and its application in alkali-free flooding systems

Shi

Liao

Liu

2013

J Petrol Explor Prod Technol

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Hexadecylbenzene sulfonate was synthesized using aluminum trichloride catalyzed Friedel-Crafts reaction with hexadecyl linear internal olefin to benzene, sulfonated by chlorosulfonic acid, and neutralized with sodium hydroxide. The structure of the synthesized hexadecylbenzene sulfonate was characterized by infrared spectroscopy and mass spectroscopy. Surfactant mixtures were formulated by the synthesized hexadecylbenzene sulfonate and Kelamayi petroleum sulfonate. The results showed that the surfactant mixtures could reduce the interfacial tension to ultra-low values in the presence as well as the absence of polymer, at a very low concentration. The surfactant/polymer systems had a good thermal stability. The recovery factor was 59.85 % of original oil in place when the surfactant/polymer slug size was 0.3 pore volume of the core, compared with 45.59 % in case of water flood.

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“…They found that when the benzene ring point of attachment is shifted to the center of the n-hexadecane chain, the surfactant becomes more hydrophobic, although it is also more water soluble, an apparently paradoxical association of properties. In recent years, Yang [8,9] and Zhao [10] synthesized a series of the hexadecyl benzene sulfonates. Zhang [11] synthesized multi-n-alkyl benzene sulfonates and reported characteristic parameters such as the critical micellar concentration (CMC), and the surface and interfacial tension at CMC.…”

Section: Introductionmentioning

confidence: 99%

Synthesis, Characterization and Surface Activity of Hexadecyl o‐Xylene Sulfonate Isomers

Ding

Tao

et al. 2009

J Surfact & Detergents

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This paper deals with the synthesis of a series of hexadecyl o-xylene sulfonate isomers (with the o-xylene ring located at different positions along the n-hexadecyl chain) by a Friedel-Crafts reaction, and the Grignard reaction followed by a hydrogenation. The structure was confirmed by 1 H NMR. All analytical methods indicated high levels of purities of the isomers with the orthoxylene ring located at the first, third, fifth and seventh carbon atom on the n-hexadecane chain. The critical micelle concentration (CMC), surface tension and maximum surface excess concentration at CMC and area per molecule at the interface were determined. As the o-xylene sulfonate group is shifted toward the center of the hexadecyl chain, the branching degree is enhanced and the surfactant molecule tends to produce a much looser packing at the gas-liquid interface. Accordingly, at CMC, the adsorption density decreases, the CMC increases and the tension reduction is weakened.

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Effects of branching in hexadecylbenzene sulfonate isomers on interfacial tension behavior in oil/alkali systems

Cited by 40 publications

References 15 publications

Enhanced Oil Recovery Techniques for Indian Reservoirs

Enhanced Oil Recovery Techniques for Indian Reservoirs

Synthesis of hexadecylbenzene sulfonate and its application in alkali-free flooding systems

Synthesis, Characterization and Surface Activity of Hexadecyl o‐Xylene Sulfonate Isomers

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