The Synergistic Effects of Alkaline, Surfactant, and Polymer on the Emulsification and Destabilization of Oil-in-water Crude Oil Emulsion Produced by Alkaline-surfactant-polymer Flooding

Li, J. X.; Liu, Y.; Wu, Di; Meng, Xiangchun; Zhao, Fu‐Gang

doi:10.1080/10916466.2010.531341

Cited by 26 publications

(8 citation statements)

References 5 publications

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“…It is known that the injection of polar compounds such as surfactants and polymers results in unwanted stable emulsions, which generate operational problems (Deng et al, 2005;Li et al, 2013). The stability of these emulsions are due to their heterogeneous composition and hence the breakage of such stable emulsions is always difficult, adding extra treatment costs (Less and Vilagines, 2012).…”

Section: Introductionmentioning

confidence: 99%

Demulsification of stable emulsions from produced water using a phase separator with inclined parallel arc coalescing plates

Almarouf

Nasser

Al–Marri

et al. 2015

Journal of Petroleum Science and Engineering

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Section: Introductionmentioning

confidence: 99%

Demulsification of stable emulsions from produced water using a phase separator with inclined parallel arc coalescing plates

Almarouf

Nasser

Al–Marri

et al. 2015

Journal of Petroleum Science and Engineering

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“…An X-ray Diffraction (XRD) spectrometer (PANalytical X'Pert 3 Powder, AA Almelo, The Netherlands) is used to determine the crystalline structure of the synthesized material. The XRD patterns of the synthesized TiO 2 nanoparticles was obtained in the range of 20 to 80 • (2θ) using Cu-Kα irradiation (λ = 0.15406 nm) at room temperature with a 0.001 • (2θ) of step size per second.…”

Section: Characterization Of Tio 2 Nanoparticlesmentioning

confidence: 99%

“…A previous study has reported that facility sites of oil fields are experiencing fluid transport problems due to the production of a high amount of crude oil in water, which makes a very stable o/w emulsion in the presence of ASP chemicals [2]. Studies have also reported high stability, higher emulsification, strong interfacial film strength, and a high content of small oil droplets in o/w emulsion [3,4]. Consequently, it is challenging to separate o/w, which significantly hinders the commercialized application of ASP flooding technology.…”

Section: Introductionmentioning

confidence: 99%

De-Emulsification and Gravity Separation of Micro-Emulsion Produced with Enhanced Oil Recovery Chemicals Flooding

Khan

Ullah

et al. 2021

Energies

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The present study investigates the effect of TiO2 nanoparticles on the stability of Enhanced Oil Recovery (EOR)-produced stable emulsion. The chemical precipitation method is used to synthesize TiO2 nanoparticles, and their properties were determined using various analytical characterization techniques such as X-ray Diffraction (XRD), High-Resolution Transmission Electron Microscopy (HRTEM), and Field Emission Scanning Electron Microscopy (FESEM). The effect of TiO2 nanoparticles is evaluated by measuring oil/water (o/w) separation, rag layer formation, oil droplet size, and zeta potential of the residual EOR produced emulsion. The laser scattering technique is used to determine the o/w separation. The results showed that spherical-shaped anatase phase TiO2 nanoparticles were produced with an average particle size of 122 nm. The TiO2 nanoparticles had a positive effect on o/w separation and the clarity of the separated water. The separated aqueous phases’ clarity is 75% and 45% with and without TiO2 nanoparticles, respectively. Laser scattering analysis revealed enhanced light transmission in the presence of TiO2 nanoparticles, suggesting higher o/w separation of the ASP-produced emulsion. The overall increase in the o/w separation was recorded to be 19% in the presence of TiO2 nanoparticles, indicating a decrease in the stability of ASP-produced emulsion. This decrease in the stability can be attributed to the improved coalescence’ action between the adjacent oil droplets and improved behavior of o/w interfacial film. An observable difference was found between the oil droplet size before and after the addition of TiO2 nanoparticles, where the oil droplet size increased from 3 µm to 35 µm. A similar trend of zeta potential is also noticed in the presence of TiO2 nanoparticles. Zeta potential was −13 mV to −7 mV, which is in the unstable emulsion range. Overall, the o/w separation is enhanced by introducing TiO2 nanoparticles into ASP-produced stable emulsion.

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“…At the same time, the existence of residual chemical agents in the ASP flooding produced water will lead to complications in the produced water [8,9]. The produced water has a high salinity, high degree of emulsification, strong interfacial film strength and high content of small oil droplets [10,11,12]. As a result, it is difficult to separate oil and water which greatly limits commercialized ASP flooding technology.…”

Section: Introductionmentioning

confidence: 99%

Study on Demulsification-Flocculation Mechanism of Oil-Water Emulsion in Produced Water from Alkali/Surfactant/Polymer Flooding

Huang

Zhang

et al. 2019

Polymers

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The issue of pipeline scaling and oil-water separation caused by treating produced water in Alkali/Surfactant/Polymer (ASP) flooding greatly limits the wide use of ASP flooding technology. Therefore, this study of the demulsification-flocculation mechanism of oil-water emulsion in ASP flooding produced water is of great importance for ASP produced water treatment and its application. In this paper, the demulsification-flocculation mechanism of produced water is studied by simulating the changes in oil-water interfacial tension, Zeta potential and the size of oil droplets of produced water with an added demulsifier or flocculent by laboratory experiments. The results show that the demulsifier molecules can be adsorbed onto the oil droplets and replace the surfactant absorbed on the surface of oil droplets, reducing interfacial tension and weakening interfacial film strength, resulting in decreased stability of the oil droplets. The demulsifier can also neutralize the negative charge on the surface of oil droplets and reduce the electrostatic repulsion between them which will be beneficial for the accumulation of oil droplets. The flocculent after demulsification of oil droplets by charge neutralization, adsorption bridging, and sweeping all functions together. Thus, the oil droplets form aggregates and the synthetic action by the demulsifier and the flocculent causes the oil drop film to break up and oil droplet coalescence occurs to separate oil water.

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The Synergistic Effects of Alkaline, Surfactant, and Polymer on the Emulsification and Destabilization of Oil-in-water Crude Oil Emulsion Produced by Alkaline-surfactant-polymer Flooding

Cited by 26 publications

References 5 publications

Demulsification of stable emulsions from produced water using a phase separator with inclined parallel arc coalescing plates

Demulsification of stable emulsions from produced water using a phase separator with inclined parallel arc coalescing plates

De-Emulsification and Gravity Separation of Micro-Emulsion Produced with Enhanced Oil Recovery Chemicals Flooding

Study on Demulsification-Flocculation Mechanism of Oil-Water Emulsion in Produced Water from Alkali/Surfactant/Polymer Flooding

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