Article
Chemistry, Physical
Alexey V. Vakhin, Firdavs A. Aliev, Irek I. Mukhamatdinov, Sergey A. Sitnov, Sergey I. Kudryashov, Igor S. Afanasiev, Oleg V. Petrashov, Danis K. Nurgaliev
Summary: The study investigated the catalytic performance of an oil-soluble nickel-based catalyst during aquathermolysis of oil-saturated crushed cores, revealing that the catalytic upgrading at 300 degrees C led to a decrease in resins and asphaltenes content, an increase in saturated hydrocarbon content, and a significant increase in low-molecular alkanes in the saturates fraction. The results suggest that nickel tallate is a promising catalyst for in-situ upgrading of extra-heavy oil during steam injection techniques.
Article
Energy & Fuels
Temurali Kholmurodov, Arash Tajik, Abdolreza Farhadian, Oybek Mirzayev, Pooya Tahay, Alexey V. Vakhin, Alimorad Rashidi
Summary: This study aims to fill the research gap of using aromatic ligands in catalyst synthesis for catalytic aquathermolysis of heavy oil. The developed oil-soluble catalyst (Ni-OSC) using catechol as a novel ligand effectively interacts with heavy oil fractions, reducing the content of resin and asphaltene and increasing the amounts of saturated and aromatic hydrocarbons. GC-MS analysis revealed an increase in low molecular weight hydrocarbons and a higher concentration of alkanes and aromatic hydrocarbons in the presence of Ni-OSC, improving the quality and recovery of heavy oil.
Review
Engineering, Chemical
Firdavs A. Aliev, Irek I. Mukhamatdinov, Sergey A. Sitnov, Mayya R. Ziganshina, Yaroslav Onishchenko, Andrey Sharifullin, Alexey V. Vakhin
Summary: Aquathermolysis process is a promising method for in-situ heavy oil upgrading, with metal ions speeding up reactions, and oil-soluble catalysts and reservoir rock minerals also playing a role. The process starts with breaking C-S bonds, leading to viscosity reduction and other key reactions.
Article
Energy & Fuels
Ameer H. AL-Rubaye, Muneer A. Suwaid, Ameen A. Al-Muntaser, Mikhail A. Varfolomeev, Ilfat Z. Rakhmatullin, Mohammed H. Hakimi, Shadi A. Saeed
Summary: The study demonstrates that bimetallic catalysts based on transition metals can effectively improve the in-situ heavy oil upgrading process by reducing viscosity, increasing saturates content, improving H/C ratio, and removing sulfur and nitrogen compounds. Among the catalysts tested, CoFe2O4 shows the best performance in enhancing the quality of heavy crude oil.
JOURNAL OF PETROLEUM EXPLORATION AND PRODUCTION TECHNOLOGY
(2022)
Article
Energy & Fuels
Alcides Simao, Enrique Dominguez-Alvarez, Chengdong Yuan, Muneer A. Suwaid, Mikhail A. Varfolomeev, Jorge Ancheyta, Omar F. Al-mishaal, Sergey Kudryashov, Igor S. Afanasiev, Dmitry A. Antonenko, Oleg Petrashov, Kirill A. Dubrovin
Summary: This article provides a comprehensive review of the application of different metal-based nanoparticles for upgrading heavy oils. The focus is on the catalysts used for in-situ upgrading, using various thermal treatment methods. Different types of catalysts have been identified, but due to their diversity and variations in evaluation conditions, a direct comparison of their performance is not possible. The literature reviewed indicates the need for further research in order to develop more effective catalysts for increasing recovery factor and permanent upgrading of heavy and extra-heavy oil quality.
Article
Engineering, Environmental
Liwa Ma, Michal Slany, Rui Guo, Weichao Du, Yongfei Li, Gang Chen
Summary: This study focuses on the synergistic effect of external catalysts and in-situ inorganic minerals in aquathermolysis for enhancing heavy oil recovery. The results show that B@Cu(II)L is the most effective catalyst combination, reducing the viscosity of heavy oil at a lower temperature. Additionally, the reaction leads to the cracking of macromolecules in heavy oil into smaller molecules, decreasing the amounts of resin and asphaltene while increasing the saturated and aromatic hydrocarbons.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Environmental
Arash Tajik, Abdolreza Farhadian, Mohammed A. Khelkhal, Morteza Rezaeisadat, Sergey M. Petrov, Alexey A. Eskin, Alexey V. Vakhin, Meisam Babapour Golafshani, Semen E. Lapuk, Alexey E. Buzurov, Airat Kiiamov, Jorge Ancheyta
Summary: In this study, a new ligand was synthesized using sunflower oil as the source material to prepare Fe, Ni, Co and Cu-based oil soluble catalysts. Computational study showed that Cu-based catalyst had the strongest bond energy with the ligand. Experimental results demonstrated the efficiency of the catalysts on heavy oil oxidation process and achieved a maximum temperature shift in the high-temperature oxidation zone.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Rima D. Alharthy, Raghda A. El-Nagar, Alaa Ghanem
Summary: Heavy and extra heavy oil exploitation has gained attention due to the decline in conventional crude oil production. The high viscosity of heavy crude oil poses a major challenge in its extraction. Catalytic aquathermolysis using acidic ionic liquids has shown to effectively reduce the viscosity of heavy crude oil at relatively low temperatures, improving its rheological behavior and chemical composition.
Article
Engineering, Chemical
Alexey V. Vakhin, Mohammed A. Khelkhal, Arash Tajik, Nikita E. Ignashev, Tatiana O. Krapivnitskaya, Nikolay Yu. Peskov, Mikhail Yu. Glyavin, Svetlana A. Bulanova, Olga V. Slavkina, Konstantin A. Schekoldin
Summary: The experiments demonstrated that the iron-magnetite-based nanocatalyst improves the destructive hydrogenation processes of resins and asphaltenes compounds in carbonate oil-containing rock samples. The presence of the catalyst results in a decrease in asphaltene content and molecular weight, increasing the oil fluid's filtration capacity in the reservoir rock porous medium. Additionally, the absence of the catalyst leads to the least increase in non-extractable organic matter content in the rock samples.
Article
Chemistry, Physical
Omar F. Al-Mishaal, Muneer A. Suwaid, Ameen A. Al-Muntaser, Mohammed Amine Khelkhal, Mikhail A. Varfolomeev, Richard Djimasbe, Rustem R. Zairov, Shadi A. Saeed, Natalya A. Vorotnikova, Michael A. Shestopalov, Chengdong Yuan, Mohammed Hail Hakimi
Summary: A molybdenum-based catalyst has been developed for improving the process of heavy oil upgrading at higher temperature in the presence of water. The catalyst showed great efficiency in reducing heavy oil viscosity and enhancing saturates and light hydrocarbon content.
Article
Chemistry, Applied
Yantao Zhou, Qiuyang Zhao, Yan Miao, Xuetao Wang, Yanlong Zhang, Yechun Wang, Liejin Guo
Summary: The development of heavy oil has become increasingly important due to the demand of human society for energy. In-situ upgrading is a technology that uses transition metal catalyst to reduce heavy oil viscosity and enhance oil recovery. This study found that Cu atoms from CuSO4 entered heavy oil molecules and increased viscosity, but NaOH inhibited this effect and improved the catalyst activity of CuSO4. The composite catalyst NaOH/CuSO4 decreased viscosity by 81.43% at 300 degrees C. Further analysis revealed that NaOH's effect was due to competitive reaction mechanism and production of Cu and CuOx. These findings are helpful in understanding the aquathermolysis upgrading mechanism and developing inexpensive and efficient composite catalyst.
FUEL PROCESSING TECHNOLOGY
(2023)
Article
Chemistry, Applied
Hao Shi, Zengqiang Mao, Longchao Ran, Candong Ru, Shengwei Guo, Hua Dong
Summary: The increasing energy consumption has made heavy oil more important in the world energy system, but its exploitation is challenging due to high viscosity. This study develops a Ni-based nanocatalyst for heavy oil aquathermolysis, which effectively reduces the viscosity of heavy oil. The fabricated catalyst shows excellent catalytic performance, resulting in a significant decrease in heavy compositions and increase in light compositions, leading to up to 86.47% reduction in oil viscosity. The magnetic nature of the catalyst allows for easy separation, minimizing its effect on oil refining.
FUEL PROCESSING TECHNOLOGY
(2023)
Article
Chemistry, Physical
Alexey Y. Kirgizov, Baodong Ding, Artur A. Spiridonov, Lei Liu, Artem Laskin, Chang Cao, Il'dar R. Il'yasov, Ameen A. Al-Muntaser, Xiaodong Zhou, Radik A. Zinnatov, Alexander A. Lamberov, Chengdong Yuan, Mikhail A. Varfolomeev
Summary: Co-Mo/gamma-Al2O3 catalysts with different pore shapes were synthesized for the ex situ upgrading of extra heavy oils. Catalysts synthesized on a carrier with cylindrical pores exhibited higher catalytic activity in sulfur, heavy metals, and asphaltenes removal reactions.
Article
Chemistry, Physical
Sergey A. Sitnov, Irek I. Mukhamatdinov, Dmitry A. Feoktistov, Yaroslav V. Onishchenko, Vladislav A. Sudakov, Marat I. Amerkhanov, Alexey V. Vakhin
Summary: This study focuses on enhancing the efficiency of thermal recovery methods by reducing heavy components and improving the quality of heavy oil through catalytic hydrothermal treatment. The introduction of catalyst along with a hydrogen donor has shown to decrease resin content and increase the share of saturated hydrocarbons. These findings suggest that this method is effective for oil reservoirs with high sulfur content.
Article
Energy & Fuels
Nicolas Bueno, Juan M. Mejia
Summary: The laboratory-calibrated numerical model can evaluate the performance of in-situ upgrading technology on heavy oil reservoirs during steamflooding operations and predict an increase in oil recovery factor.
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2021)
Article
Engineering, Chemical
Alexey V. Vakhin, Firdavs A. Aliev, Irek I. Mukhamatdinov, Sergey A. Sitnov, Andrey Sharifullin, Sergey Kudryashov, Igor S. Afanasiev, Oleg Petrashov, Danis K. Nurgaliev
Article
Spectroscopy
A. R. Khaidarova, A. V. Pyataev, I. I. Mukhamatdinov, R. D. Zaripova, A. V. Vakhin
JOURNAL OF APPLIED SPECTROSCOPY
(2020)
Article
Energy & Fuels
Irek I. Mukhamatdinov, Indad S. S. Salih, Mohammed Amine Khelkhal, Alexey V. Vakhin
Summary: The study focused on the effect of various solvents on upgrading heavy oil, with results showing that benzene released the largest amount of gases and toluene had the best effect on reducing viscosity and resin content. Infrared spectral data confirmed that solvents can enhance energy efficiency in thermal steam exposure for heavy oil and natural bitumen deposits.
Review
Engineering, Chemical
Firdavs A. Aliev, Irek I. Mukhamatdinov, Sergey A. Sitnov, Mayya R. Ziganshina, Yaroslav Onishchenko, Andrey Sharifullin, Alexey V. Vakhin
Summary: Aquathermolysis process is a promising method for in-situ heavy oil upgrading, with metal ions speeding up reactions, and oil-soluble catalysts and reservoir rock minerals also playing a role. The process starts with breaking C-S bonds, leading to viscosity reduction and other key reactions.
Article
Chemistry, Physical
Alexey V. Vakhin, Firdavs A. Aliev, Irek I. Mukhamatdinov, Sergey A. Sitnov, Sergey I. Kudryashov, Igor S. Afanasiev, Oleg V. Petrashov, Danis K. Nurgaliev
Summary: The study investigated the catalytic performance of an oil-soluble nickel-based catalyst during aquathermolysis of oil-saturated crushed cores, revealing that the catalytic upgrading at 300 degrees C led to a decrease in resins and asphaltenes content, an increase in saturated hydrocarbon content, and a significant increase in low-molecular alkanes in the saturates fraction. The results suggest that nickel tallate is a promising catalyst for in-situ upgrading of extra-heavy oil during steam injection techniques.
Article
Chemistry, Physical
Irek I. Mukhamatdinov, Indad Sh. S. Salih, Ilfat Z. Rakhmatullin, Nikita N. Sviridenko, Galina S. Pevneva, Rakesh K. Sharma, Alexey V. Vakhin
Summary: This study aimed to investigate the fractional composition of super-viscous oil resins from the Ashalcha field and their catalytic aquathermolysis products. Results showed a decrease in molecular mass and H/C ratio of resin fractions after catalytic treatment, while an increase in aliphatic hydrogen index was observed in specific parts of the resins. Structural group analysis was also conducted to construct hypothetical structures of the initial oil resin molecules and aquathermolysis products.
Article
Chemistry, Physical
Sergey A. Sitnov, Irek I. Mukhamatdinov, Dmitry A. Feoktistov, Yaroslav V. Onishchenko, Vladislav A. Sudakov, Marat I. Amerkhanov, Alexey V. Vakhin
Summary: This study focuses on enhancing the efficiency of thermal recovery methods by reducing heavy components and improving the quality of heavy oil through catalytic hydrothermal treatment. The introduction of catalyst along with a hydrogen donor has shown to decrease resin content and increase the share of saturated hydrocarbons. These findings suggest that this method is effective for oil reservoirs with high sulfur content.
Article
Chemistry, Physical
Mohammed A. Khelkhal, Semen E. Lapuk, Aleksey Buzyurov, Nikita E. Ignashev, Elvira Shmeleva, Irek I. Mukhamatdinov, Alexey V. Vakhin
Summary: This study investigates the effect of iron tallates on the pyrolysis and aquathermolysis of Cuban heavy oil. The results show that aquathermolysis leads to a significant increase in light hydrocarbon content and a decrease in sulfur and oxygen content. Infrared spectrometry confirms the transformation of asphaltene and resin compounds into light hydrocarbons. Additionally, the presence of the catalyst reduces the activation energy of heavy oil pyrolysis and increases the reaction rate.
Article
Chemistry, Physical
Alexey V. Vakhin, Mohammed A. Khelkhal, Irek I. Mukhamatdinov, Rezeda E. Mukhamatdinova, Arash Tajik, Olga Slavkina, Sergey Y. Malaniy, Marat R. Gafurov, Aydar R. Nasybullin, Oleg G. Morozov
Summary: This study investigates the effect of electromagnetic heating on heavy oil upgrading. The use of nanosized magnetite enhances microwave radiation application and catalyzes the breaking of carbon-heteroatom bonds. The transformation of asphaltenes involves the formation of light aromatic compounds.
Article
Chemistry, Physical
Irek I. Mukhamatdinov, Artem Lapin, Rezeda E. Mukhamatdinova, Aydar A. Akhmadiyarov, Boudkhil Affane, Dmitriy A. Emel'yanov, Olga Slavkina, Alexey V. Vakhin
Summary: The synthesis of an oil-soluble iron-based catalyst precursor was conducted in this study and its efficiency was tested in a laboratory simulation of the aquathermolysis process at different temperatures. The results showed that the catalyst significantly increased the content of alkanes and cycloalkanes in the samples, and increasing the concentration of the catalyst led to a decrease in the molecular mass of the oil.
Article
Chemistry, Physical
Khoshim Kh Urazov, Nikita N. Sviridenko, Yuliya A. Iovik, Ekaterina N. Kolobova, Maria Grabchenko, Irina A. Kurzina, Irek I. Mukhamatdinov
Summary: The transformations of oil components from the Zyuzeevskoye field during catalytic aquathermolysis in the presence of a nickel-containing catalyst precursor and hydrogen donors were studied. It was found that the yield of gasoline and diesel fractions increased significantly under catalytic aquathermolysis with the presence of tetralin. The study also explored the relationship between the structure and phase composition of the catalysts and the amount of free hydrogen.
Article
Chemistry, Physical
Ilgiz F. Minkhanov, Vladislav V. Chalin, Aidar R. Tazeev, Alexander V. Bolotov, Irek I. Mukhamatdinov, Sergey A. Sitnov, Alexey V. Vakhin, Mikhail A. Varfolomeev, Sergey I. Kudryashov, Igor S. Afanasiev, Alexey V. Solovyev, Georgiy V. Sansiev, Dmitry A. Antonenko, Kirill A. Dubrovin, Iaroslav O. Simakov
Summary: In order to evaluate the efficiency of the catalytic aquathermolysis process, physical modeling was carried out on bituminous sediments of Paleocene-Miocene carbonate rocks, characterized by the presence of open and closed fractures. Three filtration experiments were performed on an unextracted reservoir model with extra-viscous oil (EVO). The results showed that the efficiency of oil displacement could be significantly increased by using a solvent and the combined use of a solvent and a catalyst, which is associated with the processes of oil refining.
Article
Energy & Fuels
Sergey Sitnov, Irek Mukhamatdinov, Firdavs Aliev, Mohammed Amine Khelkhal, Olga Slavkina, Konstantin Bugaev
PETROLEUM SCIENCE AND TECHNOLOGY
(2020)
