The Solubility of Asphaltenes in Different Hydrocarbon Liquids

Miadonye, Adango; Evans, L.

doi:10.1080/10916460902936960

Cited by 39 publications

(15 citation statements)

References 8 publications

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“…Asphaltene is usually highly polar in nature and thus cannot be homogenized or solubilized in the crude oil on its own, since it is against its nature. Resins are characterized by having both a polar side and a nonpolar side and thus function as a bridging material that connects the nonpolar hydrocarbon compounds to the highly polar asphaltene (Miadonye and Evans 2010).…”

Section: Resinsmentioning

confidence: 99%

“…At equilibrium conditions, the asphaltene will remain stable in the crude oil. However, once any disturbance, such as Jewell et al (1972) Anion-cation exchange chromatography Lichaa and Herrera (1975) Asphaltene precipitation tests Hernandez et al (1983) SARA analysis Pearson and Gharfeh (1986) Liquid chromatography with flame ionization detector Karlsen and Larter (1991) Thin-layer chromatography with flame ionization detector Martinez et al (1997) Thermal cracking Kok et al (1998) Oxidation reaction and SARA analysis Groenzin and Mullins (2000) Fluorescence depolarization Yarranton et al (2000) Vapor pressure osmometry Fan et al (2002) Clay-gel adsorption chromatography, thin-layer chromatography, and high-pressure liquid chromatography Islas-Flores et al (2005) Open-column chromatography and high-pressure liquid chromatography SARA analysis Hannisdal et al (2006) Infrared analysis Goual and Abudu (2009) Adsorption using microbalance Miadonye and Evans (2010) Calorimetry and filtration Bahzad et al (2010) Hydrodemetallization Angle and Hua (2012) Dynamic light scattering microscopy Cho et al (2012) Fourier transform ion cyclotron resonance mass spectrometry with atmospheric pressure photoionization Keshmirizadeh et al (2013) Open-column, thin-layer, and gas chromatography coupled with flame ionization detector Kharrat et al (2013) Optical spectroscopy method Seifried et al (2013) Confocal laser scanning microscope Cendejasa et al (2013) Nuclear magnetic resonance Fakher et al (2018) SARA analysis using chemical methods based on heptane separation Fakher and Imqam (2018a, b) Filtration based on heptane Fakher and Imqam (2018a, b) SARA analysis and gas chromatography production or solvent injection occurs to the oil, the asphaltene will begin to precipitate from the oil solution. Precipitation involves the asphaltene solid coming out of solution and forming visible asphaltene particles that are suspended in the oil.…”

Section: Asphaltene Precipitationmentioning

confidence: 99%

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Critical review of asphaltene properties and factors impacting its stability in crude oil

Fakher

Ahdaya

Elturki

et al. 2019

J Petrol Explor Prod Technol

163

111

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Asphaltene is a component of crude oil that has been reported to cause severe problems during production and transportation of the oil from the reservoir. It is a solid component of the oil that has different structures and molecular makeup which makes it one of the most complex components of the oil. This research provides a detailed review of asphaltene properties, characteristics, and previous studies to construct a guideline to asphaltene and its impact on oil recovery. The research begins with an explanation of the main components of crude oil and their relation to asphaltene. The method by which asphaltene is quantified in the crude oil is then explained. Due to its different structures, asphaltene has been modeled using different models all of which are then discussed. All chemical analysis methods that have been used to characterize and study asphaltene are then mentioned and the most commonly used method is shown. Asphaltene will pass through several phases in the reservoir beginning from its stability phase up to its deposition in the pores, wellbore, and facilities. All these phases are explained, and the reason they may occur is mentioned. Following this, the methods by which asphaltene can damage oil recovery are presented. Asphaltene rheology and flow mechanism in the reservoir are then explained in detail including asphaltene onset pressure determination and significance and the use of micro-and nanofluidics to model asphaltene. Finally, the mathematical models, previous laboratory, and oilfield studies conducted to evaluate asphaltene are discussed. This research will help increase the understanding of asphaltene and provide a guideline to properly study and model asphaltene in future studies.

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Section: Resinsmentioning

confidence: 99%

Section: Asphaltene Precipitationmentioning

confidence: 99%

Critical review of asphaltene properties and factors impacting its stability in crude oil

Fakher

Ahdaya

Elturki

et al. 2019

J Petrol Explor Prod Technol

163

111

View full text Add to dashboard Cite

show abstract

“…It has been noted that high molecular weight components in the reservoir oil, such as asphaltene and resins, are not mobilized by the CO 2 during flooding, and hence the components precipitate from the oil phase and deposit into the pore spaces, which in turn results in pore plugging and a lower-than-expected oil recovery (Wang et al 2016;Al-Ghazi and Lawson 2007;Forte and Taylor 2014;Goual and Abudu 2009;Mendoza De La Cruz et al 2009;Escobedo and Mansoori 1997). The main reason behind the inability of the CO 2 to mobilize the asphaltene is linked to its stability conditions in the crude oil at the reservoir pressure and temperature (Kalantari-Dahagi et al 2006;Goual 2012;Kord et al 2012;Lichaa and Herrera 1975;Miadonye and Evans 2010). Asphaltenes are present in the crude oil as micelles, which are stabilized by resins, and maltenes, which surround the asphaltene molecules, while their aliphatic tails are comingled in the oil phase (Thomas et al 1995;Groenzin and Mullins 2000;Hernandez 1983; Leontaritis and Mansoori 1987;Punase et al 2016;Mannistu et al 1997).…”

Section: Introductionmentioning

confidence: 99%

An experimental investigation of asphaltene stability in heavy crude oil during carbon dioxide injection

Fakher

Ahdaya

Elturki

et al. 2019

J Petrol Explor Prod Technol

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Carbon dioxide (CO 2) injection is one of the most applied enhanced oil recovery methods in the hydrocarbon industry, since it has the potential to increase oil recovery significantly and can help reduce greenhouse gases through carbon storage in hydrocarbon reservoirs. Carbon dioxide injection has a severe drawback, however, since it induces asphaltene precipitation by disrupting the asphaltene stability in crude oil that bears even the slightest asphaltene concentration. This can result in severe operational problems, such as reservoir pore plugging and wellbore plugging. This research investigates some of the main factors that impact asphaltene stability in crude oil during CO 2 injection. Initially, asphaltene precipitation, flocculation, and deposition were tested using visual tests without CO 2 in order to evaluate the effect of oil viscosity and temperature on asphaltene stability and content in the crude oil. The results obtained from the visualization experiments were correlated to the Yen-Mullins asphaltene model and were used to select the proper chemical to alter the oil's viscosity without strongly affecting asphaltene stability. After performing the visual asphaltene tests, a specially designed filtration vessel was used to perform the oil filtration experiments using filter membranes with a micron and nanometer pore size. The effect of varying CO 2 injection pressure, oil viscosity, filter membrane pore size, and filter membrane thickness on asphaltene stability in crude oil was investigated. The results were then correlated with the Yen-Mullins asphaltene model to characterize the asphaltene size within the oil as well. Results showed that as the oil viscosity increased, the asphaltene concentration in the oil also increased. Also, the asphaltene concentration and filter cake thickness increased with the decrease in filter membrane pore size, since the asphaltene particles either plugged up the smaller pores, or the asphaltene nanoaggregates were larger than the pore sizes, and thus the majority of them could not pass. This research studies asphaltene instability in crude oil during CO 2 injection in different pore sizes, and correlates the results to the principle of the Yen-Mullins model for asphaltenes. The results from this research can help emphasize the factors that will impact asphaltene stability during CO 2 injection in different pore sizes in order to help reduce asphaltene-related problems that arise during CO 2 injection in hydrocarbon reservoirs.

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“…Hexane alters the solubility of asphaltenes in oil because light saturated hydrocarbons affect the interaction of asphaltenes and resins destabilizing the asphaltenes [28,29]. Introduction of aromatic compounds in the system may positively affect the stability of asphaltenes in the system [20,[23][24][25][26] because the asphaltenes have a polyaromatic structure.…”

Section: Recent Insights In Petroleum Science and Engineeringmentioning

confidence: 99%

“…The possible methods of preventing asphaltene precipitation are the addition of aromatic compounds or use of asphaltene stabilizers (inhibitors). In various periods many investigators have analyzed the in vitro effect of the various chemical compounds on precipitation of asphaltenes in oils and model asphaltene systems [15][16][17][18][19][20]. For example, in the paper [21] the effect of three groups of additives on asphaltene precipitation was studied: aromatic compounds, heteroatom compounds (O, S, N) and hydrogen donor solvents (tetraline, decaline).…”

Section: Introductionmentioning

confidence: 99%

Experimental Study of the Effect of Composite Solvent and Asphaltenes Contents on Efficiency of Heavy Oil Recovery Processes at Injection of Light Hydrocarbons

Borisov¹,

Milordov²,

Yakubova³

et al. 2018

Recent Insights in Petroleum Science and Engineering

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The current state of research in the field of solvent injection techniques for increase of heavy oil production efficiency is discussed in the chapter. As a result of a series of experiments on the physical modeling of oil displacement processes in a porous medium in large-sized model, features of asphaltene precipitation and the formation of fixed residual oil upon injection of solvent based on light alkanes are revealed. The oil displacement by n-hexane was studied and the difference in the composition of residual oil in the zones of dispersion and diffusion has been shown. The influence of the composition of asphaltenes peculiarities on the dynamics of oil recovery and on the accumulated oil recovery during the injection of n-hexane, as well as the composition and quantity of asphaltenes precipitated in the porous medium, has been estimated. The effect of toluene and nonylphenol additives on the proportion of asphaltenes in the residual oil and cumulative oil recovery has been evaluated using the Ashalchinskoye field oil as an example of heavy oil in the physical modeling of injection of n-hexane as the base solvent.

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The Solubility of Asphaltenes in Different Hydrocarbon Liquids

Cited by 39 publications

References 8 publications

Critical review of asphaltene properties and factors impacting its stability in crude oil

Critical review of asphaltene properties and factors impacting its stability in crude oil

An experimental investigation of asphaltene stability in heavy crude oil during carbon dioxide injection

Experimental Study of the Effect of Composite Solvent and Asphaltenes Contents on Efficiency of Heavy Oil Recovery Processes at Injection of Light Hydrocarbons

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