Screening of microemulsion properties for application in enhanced oil recovery

Bera, Achinta; Kumar, T. Santhosh; Ojha, Keka; Mandal, Ajay

doi:10.1016/j.fuel.2013.12.051

Cited by 165 publications

(69 citation statements)

References 51 publications

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“…After water flooding, a * 0.6 pore volume (PV) surfactant slug was injected followed by * 1.25 PV water injection as chase water flooding. The above-mentioned method has also been described in our previous work in details (Bera et al 2014a). …”

Section: Apparatus and Methods For Surfactant Flooding For Oil Recoverymentioning

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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Section: Apparatus and Methods For Surfactant Flooding For Oil Recoverymentioning

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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“…However, this work aimed to use the microemulsion in the WIV region. Some microemulsions were used for EOR, and the viscosity is an important property to ensure the sweep efficiency and thereby increase the oil recovery factor (Santanna et al, 2009;Santanna et al, 2013;Bera et al, 2014). The fluids used in the oil industry are not always Newtonian, in most cases, are non-Newtonian fluids that exhibit viscoelastic characteristics, depending on the shear rate to which they are submitted.…”

Section: Rheological Behaviormentioning

confidence: 99%

Rheological Properties of Brine/Vegetable Oil/Polyethoxylated Non-Ionic Surfactants Based Microemulsion

Curbelo

Garnica

Sousa

et al. 2018

HOLOS

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This study aimed to develop microemulsion through of ternary system composed of brine (aqueous phase), vegetable oil (oil phase), and non-ionic polyethoxylated surfactants, T20 and T80. From the ternary diagrams obtained, two systems were chosen in the regions of microemulsion (Winsor IV) and, subsequently, were conducted rheological study, at different temperatures, and cloud point studies of these systems. The results showed that the microemulsion of T20/brine/vegetable oil presented thermal stability up to 53° C and microemulsions of T80/brine/vegetable oil up to 72 o C, that could be due a change in micelle morphology and cloud point of each microemulsion system. The rheological results indicated non-Newtonian behavior, adjusted by Herschel -Bulkley model.

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“…After that, 2 ml of emulsion was injected into a glass cuvette and droplet size was measured using Nanoplus. The reading was taken at the region of optimum intensity [10].…”

Section: Measurement Of Droplet Sizementioning

confidence: 99%

Characterisation of crude palm oil O/W emulsion produced with Tween 80 and potential in residual oil recovery of palm pressed mesocarp fibre

Ramly

Zakaria

Naim

2016

IOP Conf. Ser.: Earth Environ. Sci.

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Abstract. Surfactant-assisted aqueous extraction has been proposed as a "green" alternative to hexane extraction for the recovery of oil from plant matters. An efficient aqueous surfactant extraction system usually use an extended type of ionic surfactant with the ability to produce Winsor type III microemulsion, reducing the interfacial tension (IFT) between plant oil and surfactant solution to an ultralow level (10 -3 mN/m). However, the safe used of this surfactant in food processing is uncertain leading to non-food application of the recovered oil. In the present study, the potential of Tween 80, a commercial food-grade non-ionic surfactant, was evaluated in the recovery of residual oil from palm-pressed mesocarp. The emulsion produced between Tween 80 and crude palm oil (CPO) was characterised in terms of IFT, droplet size, viscosity and phase inversion temperature (PIT). The effect of surfactant concentration, electrolyte (NaCl) and temperature were studied to determine whether a Winsor Type III microemulsion can be produced. Results shows that although these parameters were able to reduce the IFT to very low values, Winsor type III microemulsion was not produced with this single surfactant. Emulsion of CPO and Tween 80 solution did not produce a PIT even after heating to 100°C indicating that middle phase emulsion was not able to be formed with increasing temperature. The highest percentage of oil extraction (38.84%) was obtained at the concentration above the critical micelle concentration (CMC) of Tween 80 and CPO, which was at 0.5 wt% Tween 80 with 6% NaCl, and temperature of 60°C. At this concentration, the IFT value is 0.253 mN/m with a droplet size of 4183.8 nm, and a viscosity of 7.38 cp.

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Screening of microemulsion properties for application in enhanced oil recovery

Cited by 165 publications

References 51 publications

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

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

Rheological Properties of Brine/Vegetable Oil/Polyethoxylated Non-Ionic Surfactants Based Microemulsion

Characterisation of crude palm oil O/W emulsion produced with Tween 80 and potential in residual oil recovery of palm pressed mesocarp fibre

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