Thermocatalytic upgrading of heavy oil by iron oxides nanoparticles synthesized by oil-soluble precursors

Akhmadiyarov, Aydar A.; Rakipov, Ilnaz T.; Khachatrian, Artashes A.; Petrov, Аrtem А.; Ситнов, С. А.; Gerasimov, Alexander V.; Osin, Yu. N.; Varfolomeev, Mikhail A.

doi:10.1016/j.petrol.2018.04.066

Cited by 7 publications

(3 citation statements)

References 25 publications

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“…The content of sulfuric compounds (-SO) in resins and asphaltenes sharply dropped due to the reduction of sulfoxide to sulfide and hydrogen sulfide. The efficiency of catalytic aquathermolysis even at low temperatures was enough to crack the most macromolecular components and increase the content of light fractions of heavy oil [62,63]. Application of biogenic magnetite in the Toe-to-Heel Air Injection and its add-on CAtalytic upgrading PRocess In-situ (THAI-CAPRI) process is described in article [64].…”

Section: Nanocatalystsmentioning

confidence: 99%

In-Situ Heavy Oil Aquathermolysis in the Presence of Nanodispersed Catalysts Based on Transition Metals

et al. 2021

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The aquathermolysis process is widely considered to be one of the most promising approaches of in-situ upgrading of heavy oil. It is well known that introduction of metal ions speeds up the aquathermolysis reactions. There are several types of catalysts such as dispersed (heterogeneous), water-soluble and oil soluble catalysts, among which oil-soluble catalysts are attracting considerable interest in terms of efficiency and industrial scale implementation. However, the rock minerals of reservoir rocks behave like catalysts; their influence is small in contrast to the introduced metal ions. It is believed that catalytic aquathermolysis process initiates with the destruction of C-S bonds, which are very heat-sensitive and behave like a trigger for the following reactions such as ring opening, hydrogenation, reforming, water–gas shift and desulfurization reactions. Hence, the asphaltenes are hydrocracked and the viscosity of heavy oil is reduced significantly. Application of different hydrogen donors in combination with catalysts (catalytic complexes) provides a synergetic effect on viscosity reduction. The use of catalytic complexes in pilot and field tests showed the heavy oil viscosity reduction, increase in the content of light hydrocarbons and decrease in heavy fractions, as well as sulfur content. Hence, the catalytic aquathermolysis process as a distinct process can be applied as a successful method to enhance oil recovery. The objective of this study is to review all previously published lab scale and pilot experimental data, various reaction schemes and field observations on the in-situ catalytic aquathermolysis process.

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Section: Nanocatalystsmentioning

confidence: 99%

In-Situ Heavy Oil Aquathermolysis in the Presence of Nanodispersed Catalysts Based on Transition Metals

et al. 2021

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“…In traditional thermal recovery methods, during the process, the introduced high-temperature steam acts as a heat source to reduce the viscosity of the heavy oil contact layer in order to improve its fluidity, requiring increased energy input [ 10 ]. When the temperature is lowered, the viscosity of heavy oil returns to its previous value.…”

Section: Introductionmentioning

confidence: 99%

“…During the heat transfer process, the heavy oil is under high-temperature conditions; the large molecules are thermally cracked into smaller-sized lighter hydrocarbon molecules, which, in turn, reduce the viscosity of the heavy oil [ 11 , 12 ]. However, the degree of cracking is very low, and it is difficult to achieve the desired effect without the presence of a catalyst [ 10 ]. Nowadays, the catalysts used for the aquathermolysis of heavy oil can be divided into six categories: water-soluble catalysts, oil-soluble catalysts, amphiphilic catalysts, minerals and zeolites, solid superacids, and dispersed nanoparticles [ 13 , 14 , 15 , 16 ].…”

Section: Introductionmentioning

confidence: 99%

The Effect of Sodium Bentonite in the Thermo-Catalytic Reduction of Viscosity of Heavy Oils

Zhou

Zhang

et al. 2023

Molecules

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To study the synergistic catalysis of an ex situ catalyst and in situ clay in the aquathermolysis of heavy oil, in this paper, a series of bentonite-supported catechol-metal complexes were prepared, and the catalytic viscosity reduction performance in the aquathermolysis of heavy oil was investigated. Under the optimized conditions, the viscosity can be reduced by 73%, and the pour point can be lowered by 15.0 °C at most, showing the synergistic catalysis of the ex situ catalyst and in situ clay in this aquathermolytic reaction. Thermogravimetry, physical adsorption-desorption, and scanning electron microscopy were conducted to characterize the thermal stability and microstructure of the ex situ catalyst. The components of the heavy oil before and after the reaction were fully characterized. Six model compounds were used to simulate the aquathermolysis reaction process. In order to study the mechanism of viscosity reduction after the catalytic aquathermolysis reaction, the compounds were analyzed by GC-MS. It is believed that these results will be beneficial in the future for related research in this field.

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Effect of Pressure on Thermo-oxidation and Thermocatalytic Oxidation of n-C7 Asphaltenes

Medina

Gallego

Cortés

et al. 2021

Lecture Notes in Nanoscale Science and Technology

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Thermocatalytic upgrading of heavy oil by iron oxides nanoparticles synthesized by oil-soluble precursors

Cited by 7 publications

References 25 publications

In-Situ Heavy Oil Aquathermolysis in the Presence of Nanodispersed Catalysts Based on Transition Metals

In-Situ Heavy Oil Aquathermolysis in the Presence of Nanodispersed Catalysts Based on Transition Metals

The Effect of Sodium Bentonite in the Thermo-Catalytic Reduction of Viscosity of Heavy Oils

Effect of Pressure on Thermo-oxidation and Thermocatalytic Oxidation of n-C7 Asphaltenes

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