Experimental study on hydrocyclone desanding of high-viscosity oil

Article Chemistry, Physical

Thermal Behavior of Heavy Oil Catalytic Pyrolysis and Aquathermolysis

Mohammed A. Khelkhal et al.

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.

CATALYSTS (2022)

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Article Energy & Fuels

In Situ Combustion of Heavy, Medium, and Light Crude Oils: Low-Temperature Oxidation in Terms of a Chain Reaction Approach

Alexandra S. Ushakova et al.

Summary: The study aimed to expand the understanding of crude oil oxidation, specifically the formation of free radicals and hydroperoxides. By conducting experiments and matching the results with a model, the main differences between low-temperature and high-temperature oxidation reactions were identified, and conditions for successful self-ignition were determined.

ENERGY & FUELS (2022)

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Article Energy & Fuels

Iron oxide nanoparticles impact on improving reservoir rock minerals catalytic effect on heavy oil aquathermolysis

Sergey A. Sitnov et al.

Summary: The importance of developing heavy oil reserves has been emphasized in the past decade due to the growing demand for energy resources. This study investigates the aquathermolysis of heavy oil in the presence and absence of iron oxide nanoparticles under hydrothermal conditions. The results indicate that the iron oxide nanoparticles exhibit high catalytic activity, resulting in decreased resin and asphaltene content, increased saturates content, decreased viscosity, and increased gas proportion in the extracted oil.

FUEL (2022)

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Article Energy & Fuels

Experimental study and models of the settling of sand in heavy oil

Shijian Zhang et al.

Summary: This study investigates the impact of heavy oil viscosity on the natural settlement of sand, establishing two models and validating their reliability and applicability through experiments. The results suggest that considering sand particle morphology does not provide a practical advantage in predicting drag coefficients, and the established settling velocity model exhibits over 90% prediction accuracy.

JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING (2022)

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Article Energy & Fuels

Iron oxide nanoparticles impact on improving reservoir rock minerals catalytic effect on heavy oil aquathermolysis

Sergey A. Sitnov et al.

Summary: According to the results of this study, the addition of iron oxide nanoparticles at higher temperatures can significantly promote the catalytic activity of aquathermolysis, reducing the content of resins and asphaltenes, and increasing the content of saturates, leading to a decrease in viscosity and an increase in gas proportion of the extracted oil. The data obtained at 250 degrees Celsius confirm the synergistic effect of iron oxide nanoparticles, which can facilitate the decomposition and conversion of heavy oil under hydrothermal conditions.

FUEL (2022)

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Article Engineering, Chemical

Numerical simulation study of offshore heavy oil desanding by hydrocyclones

Jiaqiang Jing et al.

Summary: Sand production is common in offshore heavy oil production, posing risks to production safety. The high viscosity of heavy oil makes the separation of sand particles challenging. This study proposes a desanding scheme that combines viscosity reduction through water blending and hydrocyclone separation, focusing on the characteristics of hydrocyclone separation in heavy oil desanding.

SEPARATION AND PURIFICATION TECHNOLOGY (2021)

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Article Energy & Fuels