Preparation and performance evaluation of sulfate-quaternary ammonium Gemini surfactant

Gu, Yue; Zhou, Ming; Wang, Xia; Tu, Hongjun; Yang, Yongzhao; Zhao, Yanfeng

doi:10.1016/j.molliq.2021.117665

Cited by 11 publications

(2 citation statements)

References 56 publications

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“…Gemini surfactants have attracted increasing attention due to their unique structure, high surface/interface activity, better wettability, lower critical micelle concentration, and unusual rheological behaviors. − It is due to these characteristics that Gemini surfactants have gained potential applications in many fields, including EOR. − Mpelwa et al prepared the new Gemini surfactants EGSs, and they found that the surfactants could reduce the interfacial tension (IFT) to ultralow values (10 –3 mN/m) at a low concentration of 0.5 wt %, and core flooding experiments showed that the EGS1 could result in at least 12.3% of additional oil recovery after water flooding in the reservoir with high salinity. Liu et al synthesized a series of Gemini surfactants BA-n for the oilfield with high salinity.…”

Section: Introductionmentioning

confidence: 99%

Properties and Aggregation Behavior of Gemini Surfactants for Heavy Oil Recovery in High Temperature and Salinity Conditions

Wang,

Zheng,

Shi

et al. 2023

Energy Fuels

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In this paper, the thermal stability of the surfactant CEA-n molecules with different structures was determined by thermal gravimetric analysis. The aggregation behavior in aqueous solution was studied by dynamic light scattering and transmission electron microscopy (TEM). The interfacial behavior, emulsification performance, and heavy oil universality of the surfactants under high temperature and high salinity conditions were evaluated by interfacial tension (IFT), viscosity reduction rate (VRR), and multiple light scattering. Also, microscopic oil displacement experiments were performed to investigate the oil displacement mechanism of the surfactant. Results indicated that the surfactant molecules had good thermal stability. The initial decomposition temperature (T i ) of surfactants CEA-n was greater than 280 °C. The average hydrodynamic radius (R h ) of the surfactant CEA-2 system after aging was larger than that of the unaged system, and the aggregation of CEA-2 molecules was promoted by the addition of NaCl. Moreover, the IFT of surfactant CEA-2 had a small change with the increase of aging temperature (100−300 °C), which could be maintained on the order of 10 −1 mN/m. And the VRR of the surfactants was higher than 95.0%, showing good emulsifying and viscosity reduction effects. Although the turbiscan stability index (TSI) value of the oil LD2-1 emulsion system was the lowest and had the best emulsion stability, the VRR between the surfactant and oil NB35-2 could reach more than 99.0%, indicating that CEA-2 had good heavy oil universality. Furthermore, the sand-pack flooding experiments were also carried out to confirm the great potential of the Gemini surfactant systems for heavy oil recovery.

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Section: Introductionmentioning

confidence: 99%

Properties and Aggregation Behavior of Gemini Surfactants for Heavy Oil Recovery in High Temperature and Salinity Conditions

Wang,

Zheng,

Shi

et al. 2023

Energy Fuels

View full text Add to dashboard Cite

show abstract

“…Anionic nonionic carboxylate surfactants and Gemini quaternary ammonium surfactants all have shown excellent surface activity and excellent salt resistance in some research studies. 21,[28][29][30][31][32][33] Our research group has explored the compound properties of AE 7 C-Na and ADQ-12 in previous studies. 34 The mixed system has strong interaction and high surface activity.…”

Section: Introductionmentioning

confidence: 99%

Effects of inorganic metal ions on the mixture of single polyoxyethylene chain carboxylate surfactant and Gemini quaternary ammonium surfactant

Tai

Wang

et al. 2022

New J. Chem.

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Effect of Gemini surfactant structure on water/oil interfacial properties: A dissipative particle dynamics study

Wen

Xiao

Wang

et al. 2022

Chemical Engineering Science

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Preparation and performance evaluation of sulfate-quaternary ammonium Gemini surfactant

Cited by 11 publications

References 56 publications

Properties and Aggregation Behavior of Gemini Surfactants for Heavy Oil Recovery in High Temperature and Salinity Conditions

Properties and Aggregation Behavior of Gemini Surfactants for Heavy Oil Recovery in High Temperature and Salinity Conditions

Effects of inorganic metal ions on the mixture of single polyoxyethylene chain carboxylate surfactant and Gemini quaternary ammonium surfactant

Effect of Gemini surfactant structure on water/oil interfacial properties: A dissipative particle dynamics study

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