New insights on low temperature oxidation characteristics and possibility of auto-ignition in light oil reservoir

Liu, Zhezhi; Pu, Wanfen; Huang, Bin; Zhu, Shijie; Li, Yibo; Ao, Xiang; Xiang, Zhengrong; Lu, Yu; Wei, Bing

doi:10.1016/j.geoen.2023.211583

Cited by 4 publications

(2 citation statements)

References 29 publications

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“…If alkali is added in the process of heavy oil extraction or oxidation processing, the viscosity of oxidized heavy oil will be reduced below the initial value [ 42 ]. In this way, viscosity reduction is achieved [ 43 ]. Asphaltene oxidation can be applied not only to heavy oil processing, but also to heavy oil recovery.…”

Section: Resultsmentioning

confidence: 99%

Research on the Mechanism of Low-Temperature Oxidation of Asphaltene

Zhao

Yang

et al. 2023

Molecules

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Asphaltene extracted from heavy oil was oxidized by a mixture of propionic anhydride and hydrogen peroxide at a low temperature of 50 °C. Elemental analysis, infrared analysis, proton nuclear magnetic resonance analysis, and gas chromatograph/mass spectrometer analysis results indicated that oxygen addition, side chain cleavage, and condensation reactions mainly occurred in the oxidation process. The oxidation products were divided into 28% methanol solubles and 72% methanol insolubles. There were mainly fatty acids and fatty acid esters in the methanol solubles. There were also small amounts of aromatic compounds with low condensation in the methanol solubles, and the alkyl side chains were mostly short ones. The degree of aromatic ring condensation in the methanol insolubles was slightly higher than that of the pristine asphaltene. There were still some long unbroken chains in the methanol insolubles after the low-temperature reaction. The molecular dynamics simulation results show that the distribution of propionic anhydride around the asphaltene molecules can promote the oxidation of asphaltene. This low-temperature oxidation technology can be used to process asphaltenes to improve the profitability of heavy-oil-processing enterprises.

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Section: Resultsmentioning

confidence: 99%

Research on the Mechanism of Low-Temperature Oxidation of Asphaltene

Zhao

Yang

et al. 2023

Molecules

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“…Natural oils are common ingredients in cosmetics, skincare products, and haircare formulations. Autoxidation can result in changes in product texture, color, and scent, impacting both shelf life and user satisfaction. ,− …”

Section: Review Findingsmentioning

confidence: 99%

Quality Standards and Pharmacological Interventions of Natural Oils: Current Scenario and Future Perspectives

Ali,

Ekbbal,

Salar

et al. 2023

ACS Omega

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Medicinal plants are rich sources of natural oils such as essential and fixed oils used traditionally for nutritive as well as medicinal purposes. Most of the traditional formulations or phytopharmaceutical formulations contain oil as the main ingredient due to their own therapeutic applications and thus mitigating several pathogeneses such as fungal/bacterial/viral infection, gout, psoriasis, analgesic, antioxidant, skin infection, etc. Due to the lack of quality standards and progressive adulteration in the natural oils, their therapeutic efficacy is continuously deteriorated. To develop quality standards and validate scientific aspects on essential oils, several chromatographic and spectroscopic techniques such as HPTLC, HPLC, NMR, LC–MS, and GC–MS have been termed as the choices of techniques for better exploration of metabolites, hence sustaining the authenticity of the essential oils. In this review, chemical profiling and quality control aspects of essential or fixed oils have been explored from previously reported literature in reputed journals. Methods of chemical profiling, possible identified metabolites in essential oils, and their therapeutic applications have been described. The outcome of the review reveals that GC–MS/MS, LC-MS/MS, and NMR-based chromatographic and spectroscopic techniques are the most liable, economic, precise, and accurate techniques for determining the spuriousness or adulteration of oils based on their qualitative and quantitative chemical profiling studies. This review occupies the extensive information about the quality standards of several oils obtained from natural sources for their regulatory aspects via providing the detailed methods used in chemoprofiling techniques. Hence, this review helps researchers in further therapeutic exploration as well as quality-based standardization for their regulatory purpose.

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Thermo-oxidative characteristics, kinetic triplets, and auto-ignition potential of shale oil during air injection

Zhao,

Jiang

et al. 2024

Geoenergy Science and Engineering

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New insights on low temperature oxidation characteristics and possibility of auto-ignition in light oil reservoir

Cited by 4 publications

References 29 publications

Research on the Mechanism of Low-Temperature Oxidation of Asphaltene

Research on the Mechanism of Low-Temperature Oxidation of Asphaltene

Quality Standards and Pharmacological Interventions of Natural Oils: Current Scenario and Future Perspectives

Thermo-oxidative characteristics, kinetic triplets, and auto-ignition potential of shale oil during air injection

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