The Use of Amphiphilic Nickel Chelate for Catalytic Aquathermolysis of Extra-heavy Oil under Steam Injection Conditions

Wu, Chi‐Man Lawrence; Su, Jianzheng; Zhang, Ruiyue; Lei, Guanglun; Cao, Yingnan

doi:10.1080/15567036.2011.644387

Cited by 21 publications

(8 citation statements)

References 4 publications

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“…Although the viscosity reduction ratio could be as high as above 90% in some previous works [19][20][21]27], it is noted that the aquathermolysized oil samples were either dewatered by oil-water separation automatically or failed to mention the dewatering process. Water might not be removed completely in these cases and would affect the viscosity measurement.…”

Section: Introductionmentioning

confidence: 94%

Aquathermolysis of Heavy Crude Oil with Amphiphilic Nickel and Iron Catalysts

et al. 2014

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Two amphiphilic catalysts (i.e. metal dodecylbenzenesulfonates, noted as C 12 BSNi and C 12 BSFe) were synthesized and characterized by Fourier Transform infrared spectroscopy (FT-IR), element analysis (EA), atomic absorption spectroscopy (AAS) and thermogravimetric (TGA). Their interfacial activities were determined using a surface tensiometer and an interfacial tensiometer. Both catalysts are interfacial active and thermostable enough for heavy oil aquathermolysis. Their performance on heavy oil aquathermolysis was assessed in an autoclave.According to the viscosity reduction results, the synthesized amphiphilic catalysts are more effective than water soluble or oil soluble catalysts, with C 12 BSNi more efficient than C 12 BSFe.The average molecular weight, group compositions, and average molecular structure of heavy oil samples were analyzed using EA, FT-IR, and 1 H nuclear magnetic resonance ( 1 H NMR) before and after aquathermolysis reaction. And the results show that both catalysts caused the change of molecular structures in heavy oil. The change of asphaltene and resin molecular structures and decrease of their contents are crucially important to the reduction of viscosity. C 12 BSNi causes more changes of the asphaltene than C 12 BSFe, while C 12 BSFe is beneficial to the breakage of C-S bonds in asphlatenes and resins.

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Section: Introductionmentioning

confidence: 94%

Aquathermolysis of Heavy Crude Oil with Amphiphilic Nickel and Iron Catalysts

et al. 2014

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“…The share of unconventional hydrocarbons such as heavy oil (HO) and natural bitumen (NB) in global oil production is undoubtedly growing. − Petroleum industry and global energy markets are focused on their rational production, transportation, and refinery in order to meet the ever-growing global energy demand. − The physical and chemical characteristics of heavy oil and natural bitumen, such as high viscosity, low H/C ratio, significant content of resins and asphaltenes, as well as high concentration of heteroatom compounds, lead to some difficulties with respect to their production, transportation and processing. − Currently, in situ upgrading of heavy oil and natural bitumen is very attractive and is considered as a promising approach to prepare HO and NB in the cheapest reactor ever: reservoir formation for production, transportation, and refining to products. In situ upgrading of heavy oil is carried out roughly, whether by carbon rejection or by hydrogen addition processes.…”

Section: Introductionmentioning

confidence: 99%

Influence of Naphthenic Hydrocarbons and Polar Solvents on the Composition and Structure of Heavy-Oil Aquathermolysis Products

Mukhamatdinov

Ismael

et al. 2021

Ind. Eng. Chem. Res.

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Estimates of the conventional proven hydrocarbon reserves show a tendency toward depletion, and in the near future they will be insufficient to meet the ever-growing global energy demand. The problem of crude oil deficiency can be solved by involving unconventional hydrocarbon resources in both recovery and refinery. However, the hydrogen deficiency of heavy oil and natural bitumen requires technical and technological solutions. Therefore, the hydrogen-donating capacity of water and solvents, particularly in reservoir conditions, is very attractive. In this paper, we study the hydrogen-donating capacity of naphthenic and polar solvents during hydrothermal treatment of heavy oil from Ashal’cha reservoir (Republic of Tatarstan, Russia). It was established that naphthenic solvents significantly influence the viscosity reduction due to the destructive hydrogenation of resins and asphaltenes. Among naphthenic solvents, decalin significantly increases the amount of evolved gases, particularly C4–C10 isomers and aromatics. However, the maximum evolved gases among all of the used solvents correspond to formic acid. The results of elemental analysis revealed that the H/C ratio rises in crude oil samples after hydrothermal treatment in the presence of cyclohexane and decalin. FT-IR spectral indices revealed an increase in crude oil aliphaticity in case of using solvents from the cyclohexane–tetralin–decalin series due to the cleavage of carbon–heteroatom bonds in aliphatic substitutes of resins and asphaltenes. Significant changes in the FT-IR spectra of crude oil are observed in the presence of tetralin.

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“…However, the low viscosity is almost temporary due to the occurrence of polymerization, , and therefore some additives have been studied for this technique to achieve permanent viscosity reduction. To achieve this, many chemical compounds have been used, which are classified as follows; water-soluble metal salts like Ni sulfate (NiSO 4 ); metal complexes such as molybdenum oleate (C 72 H 136 MoO 8 ); ferric oleate (C 54 H 99 FeO 6 ), nickel oleate (C 36 H 68 NiO 4 ), cobalt oleate (C 36 H 66 CoO 4 ), iron acetylacetonate (C 15 H 21 FeO 6 ), − and amphiphilic catalysts, which are soluble in water and oil. − Iron chelate-aromatic sulfonic has been used by Chen et al as amphiphilic catalysts (aromatic sulfonic acid as an anion and iron as a cation) for viscosity reduction of extra-heavy oil at 200 °C. The apparent viscosity of crude oil was reduced by 90.7%, which is attributed to the stability of the catalyst at water–oil interface .…”

Section: Introductionmentioning

confidence: 99%

Catalytic Aquathermolysis for Altering the Rheology of Asphaltic Crude Oil Using Ionic Liquid Modified Magnetic MWCNT

et al. 2020

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The use of asphaltic crude oil resources as an alternative to offset light oil supplies over the next years has attracted oil field attention. However, its high viscosity greatly impedes the production of asphaltic crude oil from wells and constitutes an obstacle, especially during transportation and refining operations. Thus, catalytic aquathermolysis has been introduced as an attractive and green technique for upgrading the asphaltic crude oil at elevated temperatures by reducing the asphaltic crude oil viscosity. In this study, magnetic multiwalled carbon nanotubes (MWCNTs) were prepared and modified with 1-ethyl-3-(3-formyl-4-hydroxybenzyl)-1H-imidazol-3-ium acetate (EFHIA). The results revealed the rheology results revealed that the viscosity of crude oil was reduced by 75.9% when compared to thermally treated blank at the same degree after 2 h of operation using Fe3O4/MWCNT@EFHIA as a catalyst. The asphaltene, resin, and sulfur measurements revealed that the percentages of these compounds were reduced to 37%, 43%, and 47%, respectively, upon using 0.2% Fe3O4/MWCNT@EFHIA as a catalyst at 200 °C for 2 h.

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The Use of Amphiphilic Nickel Chelate for Catalytic Aquathermolysis of Extra-heavy Oil under Steam Injection Conditions

Cited by 21 publications

References 4 publications

Aquathermolysis of Heavy Crude Oil with Amphiphilic Nickel and Iron Catalysts

Aquathermolysis of Heavy Crude Oil with Amphiphilic Nickel and Iron Catalysts

Influence of Naphthenic Hydrocarbons and Polar Solvents on the Composition and Structure of Heavy-Oil Aquathermolysis Products

Catalytic Aquathermolysis for Altering the Rheology of Asphaltic Crude Oil Using Ionic Liquid Modified Magnetic MWCNT

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