Composition of Hydrothermal–Catalytic Conversion Products of Asphaltite from the Spiridonovskoe Oilfield

Antipenko, V. R.; Kayukova, G. P.; Abdrafikova, Ilmira Maratovna

doi:10.1134/s0965544119010043

Cited by 6 publications

(5 citation statements)

References 22 publications

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“…Probably, this occurs as a result of the aliphatic solvent effect on asphaltenes, while the associated highmolecular oil components that are part of the maltenic fractions of bitumen-saturated and aromatic hydrocarbons, as well as resins, are removed, which leads to the destruction of the supramolecular structures of asphaltenes and increase the degree of their aromatization. 38 The addition of white spirit in various percentages (3 and 5%) leads to an increase in saturated hydrocarbons by 19 and 24%, respectively, and also a decrease in the amount of resins by 23 and 14%, respectively, compared to the original oil.…”

Section: Resultsmentioning

confidence: 99%

“…In the presence of petroleum ether, a significant decrease in resin components (by 38%) was observed; however, there were no changes in the composition of asphaltenes compared to the original oil. Probably, this occurs as a result of the aliphatic solvent effect on asphaltenes, while the associated high-molecular oil components that are part of the maltenic fractions of bitumen-saturated and aromatic hydrocarbons, as well as resins, are removed, which leads to the destruction of the supramolecular structures of asphaltenes and increase the degree of their aromatization …”

Section: Resultsmentioning

confidence: 99%

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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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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

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

et al. 2020

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“…All samples were diluted in carbon tetrachloride at a concentration of 10 −3 g/µL before being introduced into the device. Chromatograms were recorded, according to the total ionic current (TIC), followed by reconstruction of the molecular weight distribution of various types of compounds by characteristic ions: n-alkanes and acyclic isoprenoids (m/z 57 + 113), alkyltrimethylbenzenes (m/z 133 + 134), triterpanes ( m/z 191), steranes (m/z 217 + 259) and monoaromatic steroids (m/z 253) in saturated fractions; naphthalenes (m/z 128 + 142 + 156 + 170), phenanthrenes (m/z 178 + 192 + 206), benzothiophenes (m/z 147 + 161 + 175) and dibenzothiophenes (m/z 184 + 198 + 212) in aromatic fractions [39][40][41][42][43][44][45][46][47][48][49]. The processing of mass spectral data was carried out, using the Xcalibur program.…”

Section: Methodsmentioning

confidence: 99%

“…At 350 • C, the total destruction of kerogen with the formation of significant amount of carbenes and carboids, in the case of the carbonate rock sample from the Zelenogorskaya area, is observed (Table 1). However, the content of resins and asphaltenes in such shale oil is reduced due to the transformation into insoluble carbenes and carboids under the hydrothermal impact [46,47]. As the result, asphaltenes with more aliphatic structure remains in the oil system.…”

Section: Zelenogorskaya Area Berezovskaya Areamentioning

confidence: 99%

“…Hydrocarbon composition of aromatic fractions of shale oil. The relative content of different hydrocarbon groups considering trimethyl benzene, naphthalene, phenanthrene, benzthiophene, dibenzothiophene (DBT) in aromatic fractions of shale oil from Zelenogorskaya and Berezovskaya rock samples are presented in Table 5, and the TIC of aromatic fractions are presented in Figure 5 [43,[46][47][48][49].…”

Section: Zelenogorskaya Area Berezovskaya Areamentioning

confidence: 99%

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Composition of Oil after Hydrothermal Treatment of Cabonate-Siliceous and Carbonate Domanic Shale Rocks

et al. 2021

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The hydrocarbon compositions of shale oils, generated from two different lithological–facial Domanic deposits of the Tatarstan Republic (Russia), were studied under hydrothermal impact with 30% of water addition in a 350 °С and CO2 environment. The samples were extracted from carbonate–siliceous rocks of the Semiluky–Mendym deposits of the Berezovskaya area, and carbonate deposits of the Dankovo–Lebedyan horizon of the Zelenogorskaya area of the Romashkino oil field. The distinctive features of rocks are in the composition and content of organic matter (OM), its thermal stability, as well as the structural-group composition of the shale oil products. The hydrothermal treatment of the rock samples increased the content of saturates and decreased the content of aromatics, resins and asphaltenes in the composition of crude oil. The decomposition of the polymer-like kerogen structure and destruction processes of high-molecular compounds, such as resins and asphaltenes, are accompanied with the formation of substances highly rich in carbons—carbenes and carboids. The contents of n-alkanes and acyclic isoprenoids increase in the composition of saturated hydrocarbons. According to the chemical classification of Al. A. Petrov, the character of the molecular mass distribution of such substances corresponds to oil type A1, which is considered paraffinic. The contents of dibenzothiophene, naphthalene and phenanthrene are increased in the composition of aromatic hydrocarbons, while the contents of tri-methyl-alkyl-benzene and benzothiophene are decreased. The increase in the aryl isoprenoid ratio (AIR = С13–С17/С18–С22) and maturity parameter (4-MDBT/1-MDBT) under the influences of hydrothermal factors indicates the increasing thermal maturity degree of the hydrocarbon system. The differences in the distribution behavior of saturated and aromatic hydrocarbons—biomarkers in rocks of various lithological-facies types, which are reasoned by different conditions of initial organic matter transformation as well as under the impact of hydrothermal factors—were revealed.

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Optimization of thermal steam treatment technology applied to Strelovskoye field using aquathermolysis catalysts

Mukhamatdinov,

Ali,

Mukhamatdinova

et al. 2024

Fuel

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Composition of Hydrothermal–Catalytic Conversion Products of Asphaltite from the Spiridonovskoe Oilfield

Cited by 6 publications

References 22 publications

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

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

Composition of Oil after Hydrothermal Treatment of Cabonate-Siliceous and Carbonate Domanic Shale Rocks

Optimization of thermal steam treatment technology applied to Strelovskoye field using aquathermolysis catalysts

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