Physical modeling of ultraviscous oil displacement by using solvent on a large model of oil reservoir

Yakubov, M. R.; Borisov, D. N.; Sinyashin, Kirill; Amerkhanov, Marat; Хисамов, Р С

doi:10.1016/j.petrol.2017.02.024

Cited by 7 publications

(7 citation statements)

References 31 publications

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“…Much research work was carried out in ref , where a mixture of solvents hexane (heptane homologue)–toluene was used to fractionate the oil asphaltenes of the Ashalchinskoye field. In addition, studies on the effect of heavy oil mixtures of toluene and nonylphenol have been conducted.…”

Section: Extraction Methods For the Separation Of Asphaltenes And The...mentioning

confidence: 99%

“…Much research work was carried out in ref 58, where a mixture of solvents hexane (heptane homologue)−toluene was used to fractionate the oil asphaltenes of the Ashalchinskoye Scheme 7. Fractionation Procedure The sequential precipitation and fractionation of asphaltene molecules by changing the ratio of pentane to heavy oil was studied in ref 59.…”

Section: Extraction Methods For the Separation Of Asphaltenes And The...mentioning

confidence: 99%

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Simple Methods for the Separation of Various Subfractions from Coal and Petroleum Asphaltenes

et al. 2020

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This review contains some actual information about more interesting and perspective methods of coal and petroleum asphaltenes separation, fractionation, extraction, adsorption, and complexation. These are the most convenient and simple methods for isolating various components of asphaltenes. These methods are based on the electrostatic and donor–acceptor properties of the used reagents and on unique and incompletely understood phenomena. A promising area is the use of ionic liquids as a convenient and mild isolation of asphaltene components. Understanding and identifying the diverse molecular composition of asphaltene components will help one to understand their nature more fully in the future and, more precisely, physicochemical interactions and phenomena.

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Section: Extraction Methods For the Separation Of Asphaltenes And The...mentioning

confidence: 99%

Section: Extraction Methods For the Separation Of Asphaltenes And The...mentioning

confidence: 99%

Simple Methods for the Separation of Various Subfractions from Coal and Petroleum Asphaltenes

et al. 2020

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“…The physical modeling of the oil displacement processes by hydrocarbon solvents was carried out using a laboratory model which was a transparent cell made out of an acrylic glass with the inner chamber dimensions of 450 Â 450 Â 20 mm [40,41].…”

Section: Methodsmentioning

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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“…To improve the steam injection technology, as well as to reduce steam consumption and increase oil production, more efficient technology is being implemented, in which a solvent is injected together with steam. 12,13 The use of solvents from lowboiling aliphatic hydrocarbons can lead to coagulation of asphaltenes and clogging of the pores of oily rocks, which may result in decreasing the displacement efficiency. However, aromatic hydrocarbons such as toluene, xylene, etc.…”

Section: Introductionmentioning

confidence: 99%

“…Enhancing heavy oil conversion during thermal steam injection involves a change in some characteristics of oil, leading to a positive effect on its extraction, transportation, preparation, and processing. − Enhancing and upgrading heavy oils and bitumen requires new and comprehensive methods to take advantage of, for example, the benefits of heat and the efficiency of hydrocarbon solvent injection. To improve the steam injection technology, as well as to reduce steam consumption and increase oil production, more efficient technology is being implemented, in which a solvent is injected together with steam. , The use of solvents from low-boiling aliphatic hydrocarbons can lead to coagulation of asphaltenes and clogging of the pores of oily rocks, which may result in decreasing the displacement efficiency. However, aromatic hydrocarbons such as toluene, xylene, etc.…”

Section: Introductionmentioning

confidence: 99%

Application of Aromatic and Industrial Solvents for Enhancing Heavy Oil Recovery from the Ashalcha Field

et al. 2020

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Nowadays, there is a significant increase in the share of unconventional oil reserves such as heavy and extra-heavy oils as well as natural bitumen among the total balance of extracted petroleum feedstock. In this regard, one of the most important problems is to ensure their rational production and processing and satisfaction of the increasing consumption of energy resources. This paper investigates the effect of various solvents on the upgrading of heavy oil from the Ashalcha field under thermal steam injection by means of aromatic and industrial solvents. The results suggest that the largest amount of gases is released when benzene is added to the oil from aromatic solvents (500 g/t of oil). The results of viscosity dependence on temperature and component composition showed that oil has the lowest viscosity with the addition of toluene compared to the viscosity of the original oil and the control experiment samples, whose viscosities decrease by 4 and 3.5 times, respectively, at 10 °C. The changes in the chemical group composition, especially the significant decrease of resin content in the presence of all solvents (toluene, benzene, their mixture 1:1, as well as Solvesso-150), are explained by the destruction of associated complexes of resin molecules, thereby affecting a decrease in oil viscosity. The calculation of the indices of colloidal instability showed that the control experiment oil has the lowest stability due to the high value of CII. IR spectral data have established that a significant difference between spectra of all oils is the absence of absorption bands at 1710 cm −1 , which corresponds to the vibrations of CO carbonyl groups. The use of solvents for thermal steam exposure helps to ensure a high level of energy efficiency during the application of thermal steam exposure to heavy oil and natural bitumen deposits.

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Physical modeling of ultraviscous oil displacement by using solvent on a large model of oil reservoir

Cited by 7 publications

References 31 publications

Simple Methods for the Separation of Various Subfractions from Coal and Petroleum Asphaltenes

Simple Methods for the Separation of Various Subfractions from Coal and Petroleum Asphaltenes

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

Application of Aromatic and Industrial Solvents for Enhancing Heavy Oil Recovery from the Ashalcha Field

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