Investigation on stabilization of CO 2 foam by ionic and nonionic surfactants in presence of different additives for application in enhanced oil recovery

Kumar, Sunil; Mandal, Ajay

doi:10.1016/j.apsusc.2017.05.126

Cited by 126 publications

(56 citation statements)

References 52 publications

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“…Therefore, the foamability in the synthetic seawater increased compared the foamability in deionized water. Other literature also reports an optimum concentration of salinity for maximum foamability [49]. This also suggests that the compatibility of the surfactant at given condition should be assessed and only compatible surfactants should be used.…”

Section: Resultsmentioning

confidence: 94%

A Novel Approach to Stabilize Foam Using Fluorinated Surfactants

Kamal

2019

Energies

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Selection of surfactants for enhanced oil recovery and other upstream applications is a challenging task. For enhanced oil recovery applications, a surfactant should be thermally stable, compatible with reservoir brine, and have lower adsorption on reservoir rock, have high foamability and foam stability, and should be economically viable. Foam improves the oil recovery by increasing the viscosity of the displacing fluid and by reducing the capillary forces due to a reduction in interfacial tension. In this work, foamability and foam stability of two different surfactants were evaluated using a dynamic foam analyzer. These surfactants were fluorinated zwitterionic, and hydrocarbon zwitterionic surfactants. The effect of various parameters such as surfactant type and structure, temperature, salinity, and type of injected gas was investigated on foamability and foam stability. The foamability was assessed using the volume of foam produced by injecting a constant volume of gas and foam stability was determined by half-life time. The maximum foam generation was obtained using hydrocarbon zwitterionic surfactant. However, the foam generated using fluorinated zwitterionic surfactant was more stable. A mixture of zwitterionic fluorinated and hydrocarbon fluorinated surfactant showed better foam generation and foam stability. The foam generated using CO2 has less stability compared to the foam generated using air injection. Presence of salts increases the foam stability and foam generation. At high temperature, the foamability of the surfactants increased. However, the foam stability was reduced at high temperature for all type of surfactants. This study helps in optimizing the surfactant formulations consisting of a fluorinated and hydrocarbon zwitterionic surfactant for foam injections.

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Section: Resultsmentioning

confidence: 94%

A Novel Approach to Stabilize Foam Using Fluorinated Surfactants

Kamal

2019

Energies

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“…This phenomenon has brought significant advances in both technology and industry, such as the preparation and assembly of new materials including so-called dry water [4], liquid marbles [5], colloidosomes [6], and anisotropic particles [7]. Industrial applications include oil recovery that is actualized by foam produced from the interaction between nanoparticles and mixed surfactant in a brine solution [8][9][10], and the fabrication of the porous ceramics and porous metals is accomplished using a particle-rich foams precursor [11]. The electrostatic interaction between the particles and the surfactant is believed to be a key factor in determining the surface activation of particles in such a system [8][9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Investigation of Surfactant AOT Mediated Charging of PS Particles Dispersed in Aqueous Solutions

Cao

Wang

et al. 2019

Coatings

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Nano/submicron particles can be activated by surfactants and aggregate at the air-water interface to generate and stabilize foams. Such systems have been applied extensively in the food, medicine, and cosmetic industries. Studying particle charging behavior in a particle/surfactant/water system is a fundamental way to understand the activation of the particle surface. This paper presents an investigation of the charging behavior of polystyrene (PS) particles dispersed in aqueous solutions of the surfactant sodium di-2-ethylhexylsulfosuccinate (AOT). The results showed that zeta potential of PS was related to the AOT concentration with two different concentration regions. Below the critical micelle concentration (CMC), the charging of PS particles was effected by AOT ions; while above the CMC, it came from both AOT ions and AOT micelles. This behavior was different from that observed for PS in aqueous salt solutions. Additionally, the particle concentration and size were found to affect the zeta potential differently in the two AOT concentration regions. By analyzing these results, the charging mechanism of the PS/AOT/water system was revealed to be preferential adsorption. In summary, the study disclosed the internal connection between the PS charging in aqueous AOT solution and the activation of PS particles, as well as their influence to foam formation and stability.

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“…A water film surrounds a gas bubble so that the gasphilic part is incorporated into the bubble and the hydrophilic part in the film, which makes the foam stable. This gas bubble separator film is known as foam lamellae (Kumar and Mandal 2017). The height of the foam column was measured since the foam column was filled (at this moment the gas flow was cut off) and based on the surfactant solution-foam joint.…”

Section: Foam Stabilitymentioning

confidence: 99%

Effect of a synthesized anionic fluorinated surfactant on wettability alteration for chemical treatment of near-wellbore zone in carbonate gas condensate reservoirs

2020

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The pressure drop during production in the near-wellbore zone of gas condensate reservoirs causes condensate formation in this area. Condensate blockage in this area causes an additional pressure drop that weakens the effective parameters of production, such as permeability. Reservoir rock wettability alteration to gas-wet through chemical treatment is one of the solutions to produce these condensates and eliminate condensate blockage in the area. In this study, an anionic fluorinated surfactant was synthesized and used for chemical treatment and carbonate rock wettability alteration. The synthesized surfactant was characterized by Fourier transform infrared spectroscopy and thermogravimetric analysis. Then, using surface tension tests, its critical micelle concentration (CMC) was determined. Contact angle experiments on chemically treated sections with surfactant solutions and spontaneous imbibition were performed to investigate the wettability alteration. Surfactant adsorption on porous media was calculated using flooding. Finally, the surfactant foamability was investigated using a Ross–Miles foam generator. According to the results, the synthesized surfactant has suitable thermal stability for use in gas condensate reservoirs. A CMC of 3500 ppm was obtained for the surfactant based on the surface tension experiments. Contact angle experiments show the ability of the surfactant to chemical treatment and wettability alteration of carbonate rocks to gas-wet so that at the constant concentration of CMC and at 373 K, the contact angles at treatment times of 30, 60, 120 and 240 min were obtained 87.94°, 93.50°, 99.79° and 106.03°, respectively. However, this ability varies at different surfactant concentrations and temperatures. The foamability test also shows the suitable stability of the foam generated by the surfactant, and a foam half-life time of 13 min was obtained for the surfactant at CMC.

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Investigation on stabilization of CO 2 foam by ionic and nonionic surfactants in presence of different additives for application in enhanced oil recovery

Cited by 126 publications

References 52 publications

A Novel Approach to Stabilize Foam Using Fluorinated Surfactants

A Novel Approach to Stabilize Foam Using Fluorinated Surfactants

Investigation of Surfactant AOT Mediated Charging of PS Particles Dispersed in Aqueous Solutions

Effect of a synthesized anionic fluorinated surfactant on wettability alteration for chemical treatment of near-wellbore zone in carbonate gas condensate reservoirs

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