Combustion behavior of aromatics and their interaction with n-alkane in in-situ combustion enhanced oil recovery process: Thermochemistry

Yuan, Chengdong; Emelianov, Dmitrii A.; Varfolomeev, Mikhail A.; Abaas, Mustafa

doi:10.1016/j.jiec.2019.04.014

Cited by 21 publications

(11 citation statements)

References 31 publications

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“…Heavy oil production is more challenging because of its high viscosity and density in comparison with conventional light oil. 1 Thermal enhanced oil recovery (ThEOR) methods are generally applied for heavy and extra heavy oil extraction, including steam injection, hot water flooding, in situ combustion (ISC), and so forth. 2 The ISC technique has been given much attention recently for heavy oil recovery.…”

Section: Introductionmentioning

confidence: 99%

Oil-Dispersed α-Fe₂O₃ Nanoparticles as a Catalyst for Improving Heavy Oil Oxidation

et al. 2021

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Oil-dispersed α-Fe2O3 nanocatalysts were prepared by coating α-Fe2O3 nanoparticles with oleic acid (OA). Mössbauer spectroscopy, X-ray diffraction, and field emission scanning electron microscopy were used to characterize α-Fe2O3 and α-Fe2O3@OA. Their impact on the oxidation process of heavy oil was evaluated using a porous medium thermo-effect cell and thermogravimetry–infrared spectroscopy coupled with isoconversional kinetic analysis. Compared with α-Fe2O3, α-Fe2O3@OA more efficiently catalyzed the combustion of heavy oil due to its good dispersion in heavy oil. α-Fe2O3 was found to be transformed into smaller size magnetite (Fe3O4), maghemite (γ-Fe2O3), and α-Fe2O3 during heavy oil combustion. Fe2O3@OA reduced the activation energy from a maximum of 537 to 246 kJ/mol, which considerably facilitates fuel formation and makes an easier transition from fuel formation to its combustion in the high-temperature oxidation (HTO) stage, thus shifting HTO into lower temperatures. These enhanced performances in the heavy oil combustion by α-Fe2O3@OA could be favorable for improving the efficiency of the in situ combustion (ISC) technique in oilfields.

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Section: Introductionmentioning

confidence: 99%

Oil-Dispersed α-Fe₂O₃ Nanoparticles as a Catalyst for Improving Heavy Oil Oxidation

et al. 2021

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“…It should be noted that with the same carbon number, alkanes showed much lower initiation temperatures of exothermic reactions with higher HR in LTO than aromatics. 48,66 This shows that the oxidation of saturates is of great importance for the ignition of oils in ISC processes. The acceleration effect of these organometallics for the initial oxidation of alkanes, especially Co(OA) 2 , makes them promising catalysts for promoting the ignition of crude oil in the field.…”

Section: Catalytic Oxidation Behavior Of N-hexadecanementioning

confidence: 94%

“…The construction of reaction models relies on the oxidation and catalytic oxidation kinetics of each fraction, including saturate, aromatic, resin, and asphaltene, which are called SARA fractions. In our previous works, we studied the oxidation behavior and kinetics of different pure alkanes, aromatics, and their interaction during co-combustion. ,− It was found that alkanes, uncondensed aromatics, and condensed aromatics showed a very different exothermic behaviors from each other during their oxidation process. Alkanes display only low-temperature oxidation (LTO), and condensed aromatic pyrene exhibits a special middle-high-temperature oxidation behavior, while uncondensed aromatic p -quaterphenyl shows only high-temperature oxidation (HTO).…”

Section: Introductionmentioning

confidence: 99%

Catalytic Oxidation of Alkanes by Organometallics in an In Situ Combustion Process

Yuan

Emelianov

et al. 2022

Energy Fuels

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The complicated composition of crude oils increases the difficulties in understanding their complex oxidation mechanism and catalysis in an air injection enhanced oil recovery (EOR) process, which therefore makes it necessary to use oil components as study objects. In this work, n-hexadecane (C16H34) was used as the representative of saturates to study its catalytic oxidation using oil-dispersed organometallics as catalysts. Its exothermic reaction behavior and kinetics during the oxidation process were analyzed. The catalytic effect of Co-, Cu-, and Fe-based organometallics on these exothermic reaction behaviors and kinetics was evaluated and compared to decide which metal has a higher catalytic activity for alkane oxidation. The results indicated that the onset temperature of exothermic reactions was shifted from 210 to 172, 181, and 190 °C and the first reaction peak was shifted from 219 to 186, 196, and 201 °C by Co-, Cu-, and Fe-based organometallics, respectively. This indicates that Co-, Cu-, and Fe-based organometallics can promote the initial oxidation of alkanes and shift the reaction interval to lower temperatures. In addition, these organometallics can significantly reduce the activation energy of the oxidation process of C16H34, which thus alters the pathways of chain-branching reactions. This research is the start of investigating catalytic oxidation of crude oil by organometallics using pure oil components. The findings not only provide theoretical basis to understand the catalytic effect on each oil component by organometallics but also give an indication about in which case these organometallics should be used for which purpose in air injection EOR processes.

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Section: Chemical Reaction Mechanisms Of Crude Oil Oxidationmentioning

confidence: 99%

Crude Oil Oxidation in an Air Injection Based Enhanced Oil Recovery Process: Chemical Reaction Mechanism and Catalysis

Yuan

Ifticene

et al. 2022

Energy Fuels

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Air injection as a thermal method for heavy oil recovery has a long history of about a century. However, it has not been widely applied in oilfields to date because of many challenges caused by its technical complexity. In the last two decades, more and more attention has been paid to the air injection technique because of the increasing demand for the effective development of hard-to-recover resources, including heavy oil, bitumen, oil shale, water-flooded mature reservoirs, etc. in a more energy-saving, cost-effective, environmentally friendly way. Consequently, many considerable improvements in both theory and technology have been made recently. This work first reviews the recent advances in the reaction mechanism of crude oil oxidation with highlights on the difference and connection between the oxidation of different oil components as well as their interaction during cocombustion; then, it discusses the catalytic methods for intensifying crude oil combustion with different types of catalysts, including nanometal-based particles, water-soluble metallic salts, and oil-dispersed metal-based catalysts. On the basis of the detailed review and discussion, we shed light on the challenges facing the air injection process and put forward possible methods to solve them. Simultaneously, we point out the neglected aspects of the air injection process and open the way toward fresh thinking for its technical application. And finally, we propose promising perspectives for future work for improving the performance of air injection and its wide application.

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Combustion behavior of aromatics and their interaction with n-alkane in in-situ combustion enhanced oil recovery process: Thermochemistry

Cited by 21 publications

References 31 publications

Oil-Dispersed α-Fe₂O₃ Nanoparticles as a Catalyst for Improving Heavy Oil Oxidation

Oil-Dispersed α-Fe₂O₃ Nanoparticles as a Catalyst for Improving Heavy Oil Oxidation

Catalytic Oxidation of Alkanes by Organometallics in an In Situ Combustion Process

Crude Oil Oxidation in an Air Injection Based Enhanced Oil Recovery Process: Chemical Reaction Mechanism and Catalysis

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Combustion behavior of aromatics and their interaction with n-alkane in in-situ combustion enhanced oil recovery process: Thermochemistry

Cited by 21 publications

References 31 publications

Oil-Dispersed α-Fe2O3 Nanoparticles as a Catalyst for Improving Heavy Oil Oxidation

Oil-Dispersed α-Fe2O3 Nanoparticles as a Catalyst for Improving Heavy Oil Oxidation

Catalytic Oxidation of Alkanes by Organometallics in an In Situ Combustion Process

Crude Oil Oxidation in an Air Injection Based Enhanced Oil Recovery Process: Chemical Reaction Mechanism and Catalysis

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Oil-Dispersed α-Fe₂O₃ Nanoparticles as a Catalyst for Improving Heavy Oil Oxidation

Oil-Dispersed α-Fe₂O₃ Nanoparticles as a Catalyst for Improving Heavy Oil Oxidation