Catalytic Activity of Nickel and Iron Sulfides in the Degradation of Resins and Asphaltenes of High-Viscosity Oil in the Presence of Carbonate Rock Under Hydrothermal Conditions

Vakhin, Аlexey V.; Mukhamatdinov, Irek I.; Ситнов, С. А.; Mukhamatdinova, Rezeda E.; Simakov, Iaroslav O.; Nikitina, E. A.; Solovev, Aleksey V.; Sansiev, G. V.; Dubrovin, Kirill A.; Sharifullin, A. V.; Нургалиев, Д. К.

doi:10.1134/s0023158422050135

Cited by 7 publications

(1 citation statement)

References 24 publications

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“…Various organic fluids from different fields are used in these experiments. For instance, in the study by ref , the enhancement of bituminous oil from the Cuban field was conducted using an oil-soluble catalyst based on nickel, resulting in favorable physicochemical changes in the oil from a petrochemical perspective.…”

Section: Introductionmentioning

confidence: 99%

The Effect of Thermal Steam Treatment Duration with Metallic Sodium Nanoparticles on Heavy Oil Upgrading

Trubitsina,

Katnov,

Kayumov

et al. 2024

Energy Fuels

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The escalating share of hard-to-extract, highly viscous oil poses tangible challenges in the realm of oil extraction. Employing thermal steam treatment (TST) technology presents a promising approach, not only for viscosity reduction but also for comprehensive upgrading of extracted hydrocarbons within the reservoir itself. This study meticulously explores the impact of the TST duration, in tandem with organodispersed metallic sodium, on the upgrading of heavy oil sourced from the Ashalcha field. Through meticulous analysis utilizing gas chromatography, SARA analysis, IR spectroscopy, and GC-MS of individual fractions, the optimal duration for enhancing oil composition was pinpointed: 72 h at a temperature of 250 °C during TST. Remarkably, the utilization of sodium nanoparticles neutralizes hydrogen sulfide and carbon dioxide while concurrently catalyzing the degradation and reduction of asphaltenes, notorious for their adverse impact on oil rheology. Noteworthy findings include a discernible upsurge in low-molecular-weight hydrocarbons within the C1−C4 range, ascertained via gas chromatography. Additionally, analysis of saturated hydrocarbon composition using GC-MS highlighted a decline in compounds characterized by longer hydrocarbon chains. IR spectroscopy unveiled alterations in the asphaltene fraction, exhibiting reduced aromaticity attributable to the unfolding of cyclic structures and the elongation of hydrocarbon chains consequent to TST in the presence of a metallic sodium-based suspension.

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Section: Introductionmentioning

confidence: 99%