Mechanisms for lowering of interfacial tension in alkali/acidic oil systems: effect of added surfactant

Rudin, Jeff; Wasan, Darsh T.

doi:10.1021/ie00008a010

Cited by 97 publications

(65 citation statements)

References 10 publications

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“…However, it is worth pointing out that the interfacial tension arising from the crude oil/caustic interactions is greatly affected by the nature of the crude oil, the effective caustic concentration at the interface, the type of caustic agent, the presence of electrolytes, the temperature, and so forth (12,13). The effectiveness of a synergetic effect between natural surfactants and synthetic surfactants on the efficiency of the enhanced oil recovery processes has also been studied (14).…”

Section: Introductionmentioning

confidence: 99%

Bitumen-in-Water Emulsions Stabilized with Natural Surfactants

Acevedo

Gutiérrez

Rivas

2001

Journal of Colloid and Interface Science

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Section: Introductionmentioning

confidence: 99%

Bitumen-in-Water Emulsions Stabilized with Natural Surfactants

Acevedo

Gutiérrez

Rivas

2001

Journal of Colloid and Interface Science

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“…Surfactant often used together with alkali, or alkali and polymer in oil recovery (Deborah and Philip 1990;Ball and Surkalo 1990;Kang et al 2000;Samanta et al 2010). The reason is that the reaction between the alkali and naphthenic acids in the crude oil could generate soap; the soap and the added surfactants usually showed synergistic effects in reducing the interfacial tension (Rudin and Wasan 1992). On the other hand, the addition of the alkali could reduce the adsorption of the surfactant, sequester divalent ions, and alter wettability (Hirasak et al 2011).…”

Section: Introductionmentioning

confidence: 99%

Synthesis of didodecylmethyl hydroxyl sulfobetaine and its evaluation for alkali-free flooding

Shi

Song²,

Ren

et al. 2014

J Petrol Explor Prod Technol

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In this paper, didodecylmethyl hydroxyl sulfobetaine was synthesized by reaction of didodecylmethyl amine with sodium 2-hydroxy-3-chloro propanesulfate. The interfacial tensions between Dagang crude oil and solution of the surfactants, solution of surfactant-polymer mixtures were measured. The effects of surfactant concentration and aging time on the interfacial tension were investigated. It is found that the synthesized betaine surfactant could reduce the interfacial tension to ultra-low without alkali, alcohol and the other additives in the absence of or presence of polymer. The surfactant-polymer system could lower the interfacial tension to ultra-low, even was aged for more than 2 weeks. The sand-pack flooding tests indicated that, with 0.2 wt% of the betaine and with 1,500 mg/L of polymer, 16.89 % of an additional OOIP (original oil in place) was recovered from a sand pack. This result suggested that the didodecylmethyl hydroxyl sulfobetaine might be a good surfactant candidate for enhanced oil recovery.

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“…This increases the surface pressure and decreases both the interfacial energy and the IFT. Rudin & Wasan (1992) concluded that the dominant mechanism of the synergistic effect is the formation of mixed micelles of the surfactants and the generated in situ surfactant. The mixed micelles cause the IFT to drop significantly (Nelson et al, 1984).…”

Section: Surfactant In Enhanced Oil Recoverymentioning

confidence: 99%