Evolution of mass losses and evolved gases of crude oil and its SARA components during low-temperature oxidation by isothermal TG–FTIR analyses

Jin, Huo; Zhao, Shuai; Pan, Jingjun; Pu, Wanfen; Varfolomeev, Mikhail A.; Emelianov, Dmitrii A.

doi:10.1007/s10973-021-10841-z

Cited by 14 publications

(8 citation statements)

References 36 publications

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“…This was due to the limited heat transfer effect, which failed to provide a uniform temperature between the surface and interior of the sample. 23,26 In the subsequent analysis, the experimental data at 5 °C/min were used as a reference.…”

Section: Resultsmentioning

confidence: 99%

“…As seen from Figure , the HP-DSC profiles were moved to a higher temperature range while increasing the heating rate. This was due to the limited heat transfer effect, which failed to provide a uniform temperature between the surface and interior of the sample. , In the subsequent analysis, the experimental data at 5 °C/min were used as a reference.…”

Section: Results and Discussionmentioning

confidence: 99%

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Oxidation Characteristics and Kinetics of Shale Oil Using High-Pressure Differential Scanning Calorimetry

Zhao

et al. 2021

Energy Fuels

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In situ combustion (ISC) has received much attention in the area of the development of shale oil reservoirs in recent years. The primary mechanism of interest for ISC is the oxidation kinetics of the shale oil with injected oxygen. In this paper, the oxidation characteristics of one shale oil collected from the Xinjiang oilfield were researched using high-pressure differential scanning calorimetry (HP-DSC). Then, the influences of quartz sand and shale detritus on the heat liberated of shale oil were analyzed. Subsequently, the kinetic parameters were determined using two iso-conversional models, Friedman and Ozawa–Flynn–Wall (OFW). The differential scanning calorimetry (DSC) profiles peaked at 317 and 454 °C with heat flows of 4.38 and 7.16 mW/mg, respectively, while the HP-DSC profiles peaked at 301 and 431 °C with heat flows of 32.6 and 7.92 mW/mg, respectively. This finding showed that the heat release yielded by shale oil oxidation was enhanced at 5 MPa compared to 0.1 MPa, especially in the low-temperature oxidation (LTO) region. The shale oil was subjected to a fairly higher heat release yielded by LTO rather than high-temperature oxidation (HTO) at 5 MPa, contrary to the DSC results measured at 0.1 MPa. The shale detritus could accelerate the oxidation reactions of shale oil. At the HTO interval, the activation energy was reduced apparently after the addition of shale detritus, suggesting that shale detritus generated a strong catalytic effect on reducing combustion difficulty. Therefore, it is believed that spontaneous ignition may be achieved during shale oil oxidation.

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Section: Resultsmentioning

confidence: 99%

Section: Results and Discussionmentioning

confidence: 99%

Oxidation Characteristics and Kinetics of Shale Oil Using High-Pressure Differential Scanning Calorimetry

Zhao

et al. 2021

Energy Fuels

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“…Wei et al found that asphaltenes had a tendency to react with the LTO products from aromatics and saturates, thus promoting the formation of fuel, whereas aromatics inhibited the combustion of asphaltenes. Huo et al reported that the interaction among SARA fractions during cocombustion accelerated the generation of carbonyl compounds at 100 and 300 °C; however, it inhibited their generation at 200 °C. It was also reported that aromatics and/or saturates negatively affected the LTO of crude oils from the point of heat generation .…”

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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“…The occurrence of radical reactions is also observed from thermal aging. 87 The first step for these reactions occurs with the formation of the alkyl radical (R • ) originating from the decomposition of the unimolecular hydrocarbon (RH), with the abstraction of the hydrogen atom from the RH (eq 4). The addition of oxygen to the alkyl radical quickly generates the alkyl peroxy radical (ROO • ) (eq 5).…”

Section: −80mentioning

confidence: 99%

Characterization of Asphalt Aging by Analytical Techniques: A Review on Progress and Perspectives

2022

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This review describes the chemical composition of asphalt, which is relevant for the development of materials with higher quality and durability. Asphalt aging can occur in the short term (during machining and storage periods) and the long-term (during the time the pavement is exposed to the environment). To understand the effect of aging on the chemical and physical properties of asphalt, we reviewed the short-term (rolling-thin film oven test (RTFOT) and its variations) and long-term (pressure aging vessel (PAV) and its variations) aging methods and the effects of the sun’s ultraviolet radiation (Suntest and its variations). We also explored the main chemical reactions that occur in the aging processes, such as oxidation, polymerization, and aromatization. For a more accurate assessment of the classes of compounds that undergo aging reactions, fractionation techniques have been developed over the years, such as separation of asphalt into saturates, naphthenic-aromatics, resins, asphaltenes, organic sulfides, nitrogenates, and oxygenates, among others. Despite several studies on the theme of asphalt aging, it is still necessary to understand the phenomena that occur in those processes.

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Evolution of mass losses and evolved gases of crude oil and its SARA components during low-temperature oxidation by isothermal TG–FTIR analyses

Cited by 14 publications

References 36 publications

Oxidation Characteristics and Kinetics of Shale Oil Using High-Pressure Differential Scanning Calorimetry

Oxidation Characteristics and Kinetics of Shale Oil Using High-Pressure Differential Scanning Calorimetry

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

Characterization of Asphalt Aging by Analytical Techniques: A Review on Progress and Perspectives

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