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Article

Catalytic Aquathermolysis of Boca de Jaruco Heavy Oil with Nickel-Based Oil-Soluble Catalyst

1
Kazan Federal University, 18 Kremlyovskaya str., Kazan 420008, Russia
2
JSC Zarubezhneft, Armiyansky per., 9/1/1, Bld.1., Moscow 101990, Russia
*
Author to whom correspondence should be addressed.
Processes 2020, 8(5), 532; https://doi.org/10.3390/pr8050532
Received: 3 April 2020 / Revised: 25 April 2020 / Accepted: 27 April 2020 / Published: 1 May 2020
(This article belongs to the Special Issue Heavy Oils Conversion Processes)
This paper investigates aquathermolysis of heavy oil in carbonate reservoir rocks from Boca de Jaruco, which is developed by the cyclic steam stimulation method. The nickel-based catalyst precursor was introduced in order to intensify the conversion processes of heavy oil components. The active form of such catalysts—nickel sulfides—are achieved after steam treatment of crude oil at reservoir conditions. The experiments were carried out on a rock sample extracted from the depth of 1900 m. Changes in composition and structure of heavy oil after the conversion were identified using SARA-analysis, Gas Chromatography-Mass Spectroscopy of saturated fractions, FTIR spectroscopy of saturated fractions, and MALDI of resins. It is revealed that catalyst particles provide a reduction in the content of resins and asphaltenes due to the destruction of carbon-heteroatom bonds. Moreover, the destruction of C=Carom. bonds and interactions with aromatic rings are heightened. In contrast, the results of experiments in the absence of catalysts exposed polymerization and condensation of aromatic rings. The most remarkable result to emerge from the thermo-catalytic influence is the irreversible viscosity reduction of produced crude oil enhancing the oil recovery factor. Moreover, the introduction of catalysts increases the gas factor due to additional gas generation as a result of aquathermolysis reactions. The yield of methane gas is significantly high in the experimental runs with oil-saturated rocks rather than crude oil experiments. The gas factor reaches 45 m3/ton. View Full-Text
Keywords: heavy oil; in situ upgrading; nickel; aquathermolysis; catalyst; SARA-analysis heavy oil; in situ upgrading; nickel; aquathermolysis; catalyst; SARA-analysis
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MDPI and ACS Style

Vakhin, A.V.; Aliev, F.A.; Mukhamatdinov, I.I.; Sitnov, S.A.; Sharifullin, A.V.; Kudryashov, S.I.; Afanasiev, I.S.; Petrashov, O.V.; Nurgaliev, D.K. Catalytic Aquathermolysis of Boca de Jaruco Heavy Oil with Nickel-Based Oil-Soluble Catalyst. Processes 2020, 8, 532. https://doi.org/10.3390/pr8050532

AMA Style

Vakhin AV, Aliev FA, Mukhamatdinov II, Sitnov SA, Sharifullin AV, Kudryashov SI, Afanasiev IS, Petrashov OV, Nurgaliev DK. Catalytic Aquathermolysis of Boca de Jaruco Heavy Oil with Nickel-Based Oil-Soluble Catalyst. Processes. 2020; 8(5):532. https://doi.org/10.3390/pr8050532

Chicago/Turabian Style

Vakhin, Alexey V., Firdavs A. Aliev, Irek I. Mukhamatdinov, Sergey A. Sitnov, Andrey V. Sharifullin, Sergey I. Kudryashov, Igor S. Afanasiev, Oleg V. Petrashov, and Danis K. Nurgaliev. 2020. "Catalytic Aquathermolysis of Boca de Jaruco Heavy Oil with Nickel-Based Oil-Soluble Catalyst" Processes 8, no. 5: 532. https://doi.org/10.3390/pr8050532

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