The effect of mixed surfactants on enhancing oil recovery

El-Batanoney, M. H.; Abdel‐Moghny, Th.; Ramzi, M.

doi:10.1007/s11743-999-0074-7

Cited by 62 publications

(42 citation statements)

References 20 publications

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“…Such synergistic phenomena have been reported in literature and have shown to accomplish formulations able to reduce the interfacial tension down to ultralow values (El-Batanoney et al, 1999;Comelles, Sánchez-Leal & González, 2007;Wu et al, 2005;Gregersen, Kazempour & Alvarado, 2013 An optimal formulation is defined as the state in which, the conjunction of external and compositional variables is such that a minimum of interfacial tension is produced. Among the characteristic properties of an optimal formulation, the tri-phasic behavior, a Winsor's R = 1 (Winsor III system behavior), a similar solubilization of water and oil by action of the surfactant in the middle phase microemulsion, are the essential.…”

Section: Evaluation Of the Petroleum Sulfonates Obtained As Potentialmentioning

confidence: 84%

Petroleum sulfonates preparation and evaluation for chemical enhanced oil recovery in Colombian oil fields

Pachón-Contreras

Rojas-Ruíz²,

Rondón-Antón³

et al. 2014

CT&F Cienc. Tecnol. Futuro

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A n efficient method for preparing petroleum sulfonates is described in this article. Petroleum sulfonates were prepared from five different refinery cuts and characterized by infrarred and ultra-violet spectroscopy. Their hydrophilic-lipophilic relative afinity was assessed by performing phase behavior scans. The prepared surfactants were evaluated in formulations for Chemical Enhanced Oil Recovery (CEOR), showing that, under the evaluation conditions, the solubilization ratios increase with the structural similarity between the crude oil and the surfactant molecules. It was confirmed that, when used as secondary surfactants, the petroleum sulfonates here prepared allow to achieve relatively high solubilization parameters. ABSTRACT PREPARACIÓN DE SULFONATOS DE PETRÓLEO Y EVALUACIÓN PARA RECOBRO QUÍMICO MEJORADO EN CAMPOS DE PETRÓLEO COLOMBIANOS 56N o presente trabalho é descrito um método eficiente para a preparação de sulfonatos de petróleo. Os sulfonatos de petróleo são preparados a partir de cinco cortes de refinaria diferentes e são caracterizados por espectroscopia de infravermelho e ultravioleta. Sua afinidade relativa hidrófilica lipófilica foi avaliada mediante a realização de comportamentos de fase. Os tensoativos preparados foram avaliados em formulações para Recuperação Química Melhorada demonstrando que, sob as condições de avaliação, as relações de solubilização aumentam com a semelhança estrutural que existe entre o petróleo cru e as moléculas do surfactante utilizado. Confirma-se que, quando são utilizados como surfactantes secundários, os sulfonatos de petróleo aqui preparados permitem atingir parâmetros de solubilização relativamente elevados. E n el presente trabajo se describe un método eficiente para la preparación de sulfonatos de petróleo. Los sulfonatos de petróleo se prepararon a partir de cinco cortes de refinería diferentes y se caracterizaron por espectroscopía de infrarrojo y ultravioleta. Su afinidad relativa hidrófilica lipófilica se evaluó mediante la realización de comportamientos de fase. Los tensoactivos preparados se evaluaron en formulaciones para Recobro Químico Mejorado demostrando que, bajo las condiciones de evaluación, las relaciones de solubilización aumentan con la similitud estructural que existe entre el petróleo crudo y las moléculas del surfactante utilizado. Se confirma que, cuando se utilizan como surfactantes secundarios, los sulfonatos de petróleo aquí preparados permiten alcanzar parámetros de solubilización relativamente elevados.Palabras clave: Surfactantes, Sulfonación, Síntesis química, Reacción de sulfonación, Recobro mejorado de petróleo, Caracterización, Espectroscopia infrarroja, Espectroscopia de luz ultravioleta.Palavras-chave: Surfactante, Sulfonação, Síntese química, Reação de sulfonação, Recuperação melhorada de petróleo, Caracterização, Espectropia de infravermelho, Espectropia de luz ultravioleta.

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Section: Evaluation Of the Petroleum Sulfonates Obtained As Potentialmentioning

confidence: 84%

Petroleum sulfonates preparation and evaluation for chemical enhanced oil recovery in Colombian oil fields

Pachón-Contreras

Rojas-Ruíz²,

Rondón-Antón³

et al. 2014

CT&F Cienc. Tecnol. Futuro

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“…This minimum may be explained in terms of the complex crude oil composition. The effect of temperature (20) on the IFT between standard paraffinic, aromatic, and naphthenic oils and surfactant solutions showed three different IFT-temperature behaviors. Naphthenic oil displayed a continuous decrease of the IFT with temperature.…”

Section: Resultsmentioning

confidence: 99%

Novel surfactants for ultralow interfacial tension in a wide range of surfactant concentration and temperature

Aoudia

Al-Shibli

Al-Kasimi

et al. 2006

J Surfact & Detergents

114

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This work investigates the possibility of injecting dilute aqueous solutions of novel surfactants into the Yibal field (Sultanate of Oman). This was accomplished through an experimental protocol based on the following criteria: (i) compatibility of the surfactants with the high-saline reservoir water (~200 g/L); (ii) low interfacial tension (IFT) between crude oil and reservoir water (less than 10 -2 mN m -1 ); and (iii) maintaining the low IFT behavior during the entire surfactant flooding. Novel surfactants selected in this study consist of a series of ether sulfonates and an amphoteric surfactant (6-105). These surfactants were found to be compatible with reservoir water up to 0.1% surfactant concentration, whereas 6-105 and 7-58 showed compatibility within the full range of surfactant concentration investigated (0.001-0.5%). All surfactant systems displayed dynamic IFT behavior, in which ultralow transient minima were observed in the range 10 -4 -10 -3 mN m -1 , followed by an increase in the IFT to equilibrium values in the range 10 -3 -10 -1 mN m -1 . The results also showed that with respect to concentration (0.05-0.5 %) and temperature (45-80°C), AES-205 and 7-58 surfactants exhibit a wide range of applicability, with the IFT remaining below 10 -2 mN m -1 , as required for substantial residual oil recovery. In addition, ultralow IFT were obtained at surfactant concentrations as low as 0.001%, making the use of these surfactants in enhanced oil recovery extremely cost-effective.Paper no. S1524 in JSD 9, 287-293 (Qtr. 3, 2006). KEY WORDS: Compatibility, dynamic interfacial tension, surfactants, ultralow transient interfacial tension.Approximately 60% of the original oil in place (OOIP) will remain in an average oil reservoir after primary and secondary (water flooding in most cases) production. The residual oil is trapped in the reservoir pore structures by capillary forces and cannot be recovered by conventional means. Among the non-conventional techniques (known as enhanced oil recovery [EOR]) used to enhance oil production, surfactant flooding is one of the most appealing methods to enhance oil recovery from depleted reservoirs. In this technique, surfactants are added to the oil/water system to reduce the interfacial tension (IFT) from about 20-30 mN m -1 to less than 10 -2 mN m -1 (1,2). This seems to be a very simple method for recovering residual oil from reservoirs. However, from a technical point of view, there are some adverse conditions that prevent this technique from being successful in the field. The environment of an oil reservoir is often such that surfactants cannot generate this considerable reduction in surface tension as simply as described. One crucial aspect is that the water in these reservoirs is very salty (up to 200 g/L)-salinities above the solubility limits of most conventional surfactants used in EOR. Clearly, the compatibility of surfactants with reservoir brine is essential to avoid plugging of the porous medium, especially in reservoirs of low permeability. The other importa...

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“…Due to the interrelationship between IFT and capillary number, interfacial phenomena of surfactants are studied in laboratory to screen the surfactants with respect to their activities. It has been reported the surface activities of several surface active agents and their mixtures play an important role in EOR (Babadagli 2005;Babadagli and Boluk 2005;El-Batanoney et al 1999;Gong et al 2005;Zhang et al 2006).…”

Section: Introductionmentioning

confidence: 99%

Enhanced oil recovery by nonionic surfactants considering micellization, surface, and foaming properties

Bera¹,

Mandal

Belhaj³

et al. 2017

Pet. Sci.

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Surfactants for enhanced oil recovery are important to study due to their special characteristics like foam generation, lowering interfacial tension between oleic and aqueous phases, and wettability alteration of reservoir rock surfaces. Foam is a good mobility control agent in enhanced oil recovery for improving the mobility ratio. In the present work, the foaming behavior of three nonionic ethoxylated surfactants, namely Tergitol 15-S-7, Tergitol 15-S-9, and Tergitol 15-S-12, was studied experimentally. Among the surfactants, Tergitol 15-S-12 shows the highest foamability. The effect of NaCl concentration and synthetic seawater on foaming behavior of the surfactants was investigated by the test-tube shaking method. The critical micelle concentrations of aqueous solutions of the different nonionic surfactants were measured at 300 K. It was found that the critical micelle concentrations of all surfactants also increased with increasing ethylene oxide number. Dynamic light scattering experiments were performed to investigate the micelle sizes of the surfactants at their respective critical micelle concentrations. Core flooding experiments were carried out in sand packs using the surfactant solutions. It was found that 22% additional oil was recovered in the case of all the surfactants over secondary water flooding. Tergitol 15-S-12 exhibited the maximum additional oil recovery which is more than 26% after water injection.

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The effect of mixed surfactants on enhancing oil recovery

Cited by 62 publications

References 20 publications

Petroleum sulfonates preparation and evaluation for chemical enhanced oil recovery in Colombian oil fields

Petroleum sulfonates preparation and evaluation for chemical enhanced oil recovery in Colombian oil fields

Novel surfactants for ultralow interfacial tension in a wide range of surfactant concentration and temperature

Enhanced oil recovery by nonionic surfactants considering micellization, surface, and foaming properties

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