Experimental study for the impacts of flow rate and concentration of asphaltene precipitant on dynamic asphaltene deposition in microcapillary medium

Li, Xingxun; Guo, Yunmei; Sun, Qiang; Lan, Wenjie; Liu, Aixian; Guo, Xuqiang

doi:10.1016/j.petrol.2017.12.031

Cited by 30 publications

(31 citation statements)

References 66 publications

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“…They cannot provide direct information on the impact of nanoparticle on the asphaltene precipitation in micropores. Our recent studies have proved that the experimental data in confined micropores can represent the transport phenomena of reservoir fluids within porous medium more appropriately than the data measured on planar surfaces in an open space. , Recently, we have made direct pore-scale visualization on the growth kinetics of asphaltene particles in a microsized pore and compared the results with the ones obtained on a flat surface in an open space. , Xu et al (2017) used microchannel devices to study the dynamic stability of emulsion by investigating the influence of surfactants and nanoparticles . In this study, impact of metal oxide nanoparticles on asphaltene aggregation in a microsized pore was investigated.…”

Section: Introductionmentioning

confidence: 92%

“…In this study, impact of metal oxide nanoparticles on asphaltene aggregation in a microsized pore was investigated. We used the technique recently developed in our lab , to perform direct pore-scale visualization on the kinetics of asphaltene aggregation and examine the effect of nanoparticles on inhibition of asphaltene aggregation in a microsized pore.…”

Section: Introductionmentioning

confidence: 99%

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Effect of Nanoparticles on Asphaltene Aggregation in a Microsized Pore

Guo

Sun

et al. 2018

Ind. Eng. Chem. Res.

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During oil recovery process, the equilibrium state of asphaltene−oil solution system and colloidal system in porous media is altered, which could cause asphaltene to precipitate from crude oil in rock pores. This severely results in the alteration of wettability, permeability, and porosity of formation and damages oil reservoir formation. Nanoparticles have recently been considered as effective asphaltene inhibitors. Several experimental works were carried out to study the impact of nanoparticles on asphaltene precipitation. The majority of these studies were performed using coreflooding experiments in bulk phase. However, few experimental investigations were performed to directly reveal the impact of nanoparticles on asphaltene aggregation based on the direct pore-scale visual evidence. In this work, a novel method was employed to make direct visualization and measurement on the kinetics of asphaltene aggregation in the presence of nanoparticles in a microcapillary. NiO, SiO 2 , and Fe 3 O 4 nanoparticles were used. We directly measured the diameter and number and analyze size distribution of asphaltene aggregate particles in a microsized pore. The results indicate that the nanoparticles can significantly inhibit the aggregation of asphaltene particles in a microsized pore due to adsorption of asphaltene particles onto nanoparticle surfaces. The effect of nanoparticle concentration was investigated. Higher concentration of nanoparticles could contribute to the inhibition of aggregation of asphaltene particles. The asphaltene precipitation and aggregation can be prevented more effectively at higher concentration of asphaltene precipitant in the presence of nanoparticles.

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Section: Introductionmentioning

confidence: 92%

Section: Introductionmentioning

confidence: 99%

Effect of Nanoparticles on Asphaltene Aggregation in a Microsized Pore

Guo

Sun

et al. 2018

Ind. Eng. Chem. Res.

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“…); channel inner surface coating with other material can also be used [10]. For example, the interaction of asphaltenes with glass surface have been considered as an indirect factor of their deposition in the pores of an oil reservoir basing on the results of the experiments on deposition of asphaltenes in a glass microcapillary [11,12]. Simultaneous application of microfluidic methods and optical fluorescent microscopy has demonstrated the prospects of microfluidic technologies for the determination of solubility and diffusivity of toluene, CO 2 , and propane in bitumen [13][14][15].…”

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confidence: 99%

Chemical Heterogeneity of Deposits Formed in the Flocculant Flow From Crude Oil, According to FTIR Microscopy and Chemical Imaging

et al. 2021

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Asphaltene-containing deposits formed on the CaF2 window induced by n-heptane flow in a microfluidic device have been investigated using an IR microscope and an imaging macro chamber (IMAC) with FPA detection. This is the first example of the ex situ infrared imaging of the deposits from crude oil formed under dynamic conditions of flocculant flow. It has been shown that fast aggregation of asphaltenes in n-heptane flow leads to the formation of deposit rich in heteroatom-containing functional groups: (О–Н, N–H, C=O, C–O, and S=O).

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“…The can be mainly attributed to the absorption of the heavy components of bitumen by the nanoparticles, particularly asphaltene, and the consequent decrease in the aggregation of asphaltene. [45][46][47] With the increase in the nanoparticle concentration, the amount of asphaltene adsorbed increases, and the bitumen viscosity decreases. However, for the TiO 2 nanoparticles, the optimal concentration is 2500 mg L À1 ( Fig.…”

Section: Effect Of Sara Componentsmentioning

confidence: 99%