Visual study of TiO2 nanofluid stabilization methods on inhibition of asphaltene precipitation in porous media

Kafashi, Sahar; Rasaei, Mohammad Reza; Eshraghi, Ehsan; Kuhar, Laura; Bóna, Andrej; Nikoloski, Aleksandar N.

doi:10.1016/j.mineng.2021.106953

Cited by 10 publications

(4 citation statements)

References 27 publications

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“…Kafashi et al used a porous micromodel to study how different nanofluid stabilization methods, such as ultrasonic waves, alkaline addition, and UV-radiation, inhibit asphaltene deposition with TiO 2 nanoparticles. 172 The effectiveness of each method was evaluated based on the oil recovery percentage using nanofluid, as well as the nanofluid's breakthrough time. The precipitation, absorption, and adsorption of asphaltenes within the porous media were also monitored using optical microscopy.…”

Section: Influence Of Surface Coatingsmentioning

confidence: 99%

“…The use of the microfluidic platform has been particularly advantageous to the study of nanoparticles related to asphaltene mitigation due to the relevance in scale. Kafashi et al used a porous micromodel to study how different nanofluid stabilization methods, such as ultrasonic waves, alkaline addition, and UV-radiation, inhibit asphaltene deposition with TiO 2 nanoparticles . The effectiveness of each method was evaluated based on the oil recovery percentage using nanofluid, as well as the nanofluid’s breakthrough time.…”

Section: Inhibition and Remediation Of Asphaltene Deposition In Micro...mentioning

confidence: 99%

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Physicochemical Characterization of Asphaltenes Using Microfluidic Analysis

et al. 2022

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Crude oils are complex mixtures of organic molecules, of which asphaltenes are the heaviest component. Asphaltene precipitation and deposition have been recognized to be a significant problem in oil production, transmission, and processing facilities. These macromolecular aromatics are challenging to characterize due to their heterogeneity and complex molecular structure. Microfluidic devices are able to capture key characteristics of reservoir rocks and provide new insights into the transport, reactions, and chemical interactions governing fluids used in the oil and gas industry. Understanding the microscale phenomena has led to better design of macroscale processes used by the industry. One area that has seen significant growth is in the area of chemical analysis under flowing conditions. Microfluidics and microscale analysis have advanced the understanding of complex mixtures by providing in situ imaging that can be combined with other chemical characterization methods to give details of how oil, water, and added chemicals interface with pore-scale detail. This review article aims to showcase how microfluidic devices offer new physical, chemical, and dynamic information on the behavior of asphaltenes. Specifically, asphaltene deposition and related flow assurance problems, interfacial properties and rheology, and evaluation of remediation strategies studied in microchannels and microfluidic porous media are presented. Examples of successful applications that address key asphaltene-related problems highlight the advances of microscale systems as a tool for advancing the physicochemical characterization of complex fluids for the oil and gas industry.

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Section: Influence Of Surface Coatingsmentioning

confidence: 99%

Section: Inhibition and Remediation Of Asphaltene Deposition In Micro...mentioning

confidence: 99%

Physicochemical Characterization of Asphaltenes Using Microfluidic Analysis

et al. 2022

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“…49 Other chemical reactions are possible with chemicals such as sodium carbonate to recover gallium from LEDs. 50 Fracturing techniques are used in the mining industry to process rocks 51 and could be adapted to process end-of-life materials. Microwave heating, 52 cryo-milling 53 and highvoltage pulses 54,55 were reported, mainly to remove inorganics and organics fractions and to liberate the metals.…”

Section: State Of the Art Of The Recycling Techniquesmentioning

confidence: 99%

A toolbox for improved recycling of critical metals and materials in low-carbon technologies

Zante,

Elgar,

Hartley

et al. 2024

RSC Sustain.

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“…However, the first method is too expensive and time-consuming. Thus, stabilizing asphaltene in oil reservoirs has been considered by many scientists 9 , 10 .…”

Section: Introductionmentioning

confidence: 99%

Mechanistic understanding of asphaltene precipitation and oil recovery enhancement using SiO2 and CaCO3 nano-inhibitors

Shadervan,

Jafari,

Teimouri

et al. 2024

Sci Rep

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Asphaltene precipitation in oil reservoirs, well equipment, and pipelines reduces production, causing pore blockage, wettability changes, and decreased efficiency. Asphaltenes, with their unique chemical structure, self-assemble via acid–base interactions and hydrogen bonding. Nano-inhibitors prevent asphaltene aggregation at the nanoscale under reservoir conditions. This study investigates the effect of two surface-modified nanoparticles, silica, and calcium carbonate, as asphaltene inhibitors and oil production agents. The impacts of these nano-inhibitors on asphaltene content, onset point, wettability, surface tension, and oil recovery factor were determined to understand their mechanism on asphaltene precipitation and oil production. Results demonstrate that these nano-inhibitors can significantly postpone the onset point of asphaltene precipitation, with varying performance. Calcium carbonate nano-inhibitor exhibits better efficiency at low concentrations, suspending asphaltene molecules in crude oil. In contrast, silica nano-inhibitor performs better at high concentrations. Wettability alteration and IFT reduction tests reveal that each nano-inhibitor performs optimally at specific concentrations. Silica nano-inhibitors exhibit better colloidal stability and improve oil recovery more than calcium carbonate nano-inhibitors, with maximum oil recovery factors of 33% at 0.1 wt.% for silica and 25% at 0.01 wt.% for calcium carbonate nano-inhibitors.

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Visual study of TiO2 nanofluid stabilization methods on inhibition of asphaltene precipitation in porous media

Cited by 10 publications

References 27 publications

Physicochemical Characterization of Asphaltenes Using Microfluidic Analysis

Physicochemical Characterization of Asphaltenes Using Microfluidic Analysis

A toolbox for improved recycling of critical metals and materials in low-carbon technologies

Mechanistic understanding of asphaltene precipitation and oil recovery enhancement using SiO2 and CaCO3 nano-inhibitors

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