Conversion Processes for High-Viscosity Heavy Crude Oil in Catalytic and Noncatalytic Aquathermolysis

Petrukhina, N. N.; Kayukova, G. P.; Романов, Г. В.; Tumanyan, B. P.; Foss, L. E.; Kosachev, I. P.; Мусин, Р. З.; Рамазанова, А. И.; Vakhin, Аlexey V.

doi:10.1007/s10553-014-0528-y

Cited by 46 publications

(28 citation statements)

References 15 publications

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“…The most suitable catalysts for oil upgrading are those containing active sites that can effectively break the C-C, C-S, C-O, C-N, and other related bonds in resins and asphaltenes [70,71]. Ultrafine particles of unsupported metals such as base (Mo, W, Ni, V, Co, Cr, Zn etc.)…”

Section: Supports In Surface Upgradingmentioning

confidence: 99%

Recent Approaches, Catalysts and Formulations for Enhanced Recovery of Heavy Crude Oils

Gaya

2021

Period. Polytech. Chem. Eng.

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Crude oil deposits as light/heavy form all over the world. With the continued depletion of the conventional crude and reserves trending heavier, the interest to maximise heavy oil recovery continues to emerge in importance. Ordinarily, the traditional oil recovery stages leave behind a large amount of heavy oil trapped in porous reservoir structure, making the imperative of additional or enhanced oil recovery (EOR) technologies. Besides, the integration of downhole in-situ upgrading along with oil recovery techniques not only improves the efficiency of production but also the quality of the produced oil, avoiding several surface handling costs and processing challenges. In this review, we present an outline of chemical agents underpinning these enabling technologies with a focus on the current approaches, new formulations and future directions.

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Section: Supports In Surface Upgradingmentioning

confidence: 99%

Recent Approaches, Catalysts and Formulations for Enhanced Recovery of Heavy Crude Oils

Gaya

2021

Period. Polytech. Chem. Eng.

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“…These compounds are characterized by lower molecular weights and viscosities compared to resins and asphaltenes. The use of catalysts in the real oil field indicates that the catalysts can substantially reduce viscosity and hence the catalytic aquathermolysis process can be used successfully for exploration of heavy crude oils [41][42][43][44][45][46][47][48][49][50][51][52][53][54][55]. However, the oil soluble and dispersed catalysts are slightly more active than the water-soluble catalyst.…”

Section: Solid Catalysts In Aquathermolysismentioning

confidence: 99%

“…In the industry, the catalytic activity is dependent on the surface area, acidity-basicity (Brønsted/Lewis), shape selectivity, pore properties, stability, and availability and preparation routes. These factors are equally important to the aquathermolysis process [40][41][42][43][44][45][46][47][48]. The catalysts are materials such as zeolites and some oxides [50][51][52][53][54][55].…”

Section: Solid Catalysts In Aquathermolysismentioning

confidence: 99%

“…Catalysts that have good water tolerance should therefore be more preferable for this application. Catalysts based on minerals, transition metal ions, their salts and derived complexes were very active, yielding viscosity reduction as high as 80%, with significant production of saturates and lighter aromatics [6,35,[38][39][40][41][42][43][44][45][46]. However, their hot water solubility implies that catalyst recovery and subsequent reuse is fundamentally difficult.…”

Section: Solid Catalysts In Aquathermolysismentioning

confidence: 99%

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Upgrading of Heavy Oil or Vacuum Residual Oil : Aquathermolysis and Demetallization

Lee¹,

Park²

2016

Applied Chemistry for Engineering

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It has been estimated that the Earth has nearly 1.688 trillion barrels of crude oil, which will last 53.3 years at current extraction rates. The organization of petroleum exporting countries (OPEC) group forecasted that the oil prices will not jump to triple-digit territory within a decade, but it can quickly increase as the political issue for reducing oil production appears. With the potential of serious shortage of conventional hydrocarbon resources, the heavy oil, one of unconventional hydrocarbon resources including oil sand and natural bitumen has attracted worldwide interest. The heavy oil contains heavy hydrocarbon compounds, commonly called as resins and asphaltenes, with long carbon chains more than sixty carbon atoms. The high content of heavier fraction corresponds with the high molecular weight, viscosity, and boiling point. Physicochemical properties of residues from vacuum distillation of conventional oil, referred to as vacuum residues (VR) were similar to those of heavy oil. For the development of heavy oil reserves, reducing the heavy oil viscosity is the most important. In this article, commercially employed aquathermolysis processes and their application to VR upgrading are discussed. VR contains transition metals such as Ni and V, but these metals should be eliminated in advance for further refining. Recent studies on demetallization technologies for VR are also reviewed.

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“…Mo, W, C, and Ni alloys, Cu and Fe nano oxides, Ni-chelates, supported nano-Fe particles, and Cu 2+ and Fe 3+ toluenesulfonic acid complexes also showed good catalytic activity in hydrothermal treatment of heavy oil. Their catalytic effect is associated with the content of strong active centers accelerating the destruction of C-C, C-S, C-O bonds in the structures of resins and asphaltenes [11]. The destruction of heteroatomic bonds of high molecular weight components of heavy oil leads to an increase in the concentration of saturated hydrocarbons and lighter aromatics.…”

Section: Introductionmentioning

confidence: 99%

Influence of Metal Oxides and Their Precursors on the Composition of Final Products of Aquathermolysis of Raw Ashalchin Oil

et al. 2021

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Experiments were conducted simulating hydrothermal conversion of heavy oil in the presence of carbonate, kaolin, Al2O3, Ni2+ and Cu2+, NiO mixed with poly-α-olefins, C6H8O7, C2H4O2 at 290–375 °C and 10–135 bar. Al2O3, carbonate at 375 °C and 135 bar, accelerated the resin degradation. Experiments with carbonate at 350 °C and 10 bar showed no significant composition changes. NiSO4, CuSO4, kaolin mineral, at 350 °C and 78 bar, accelerated decomposition of resins (from 35.6% to 32.5%). Al2O3 and carbonate at 290 °C and 14 bar led to the destruction of asphaltenes (from 6.5% to 4.7% by weight), which were adsorbed on the surface of carbonate. Al2O3, NiO, poly-α-olefins at 350 °C and 78 bar accelerated C–C bond cracking of high-boiling asphaltenes. C6H8O7, rock-forming carbonate, at 360 °C and 14 bar, contributed to the polymerization and polycondensation of hydrocarbons with the formation of additional resins. C2H4O2 and kaolin at 360 °C and 12 bar affected the reduction in the resin content from 35.6% to 31.9% wt. C2H4O2 interacted with the active metals with the formation of acetate salts exhibiting catalytic activity.

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Conversion Processes for High-Viscosity Heavy Crude Oil in Catalytic and Noncatalytic Aquathermolysis

Cited by 46 publications

References 15 publications

Recent Approaches, Catalysts and Formulations for Enhanced Recovery of Heavy Crude Oils

Recent Approaches, Catalysts and Formulations for Enhanced Recovery of Heavy Crude Oils

Upgrading of Heavy Oil or Vacuum Residual Oil : Aquathermolysis and Demetallization

Influence of Metal Oxides and Their Precursors on the Composition of Final Products of Aquathermolysis of Raw Ashalchin Oil

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