Chemistry of organosulphur compound types occurring in heavy oil sands:

Clark, Peter D.; Hyne, J. B.; Tyrer, J. David

doi:10.1016/0016-2361(83)90170-9

Cited by 109 publications

(33 citation statements)

References 2 publications

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“…These components participated in subsequent reactions generating others, such as hydrogen sulfide, hydrogen and carbon oxides. Based on the results obtained, an overall reaction scheme was proposed [154,[162][163][164]:…”

Section: Chemistry and Kinetics Of The Processmentioning

confidence: 99%

Plenty of Room at the Bottom: Nanotechnology as Solution to an Old Issue in Enhanced Oil Recovery

2018

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During the past half-century, the prefix "nano" attached to several words, such as "technology", "motors", "device", and so on has denoted cutting-edge research fields and topics at the forefront of classical scientific disciplines. Possible application fields have been frequently evoked, even if real-life examples are still difficult to find. The present review analyzes how nanotechnology is utilized in enhanced oil recovery (EOR) processes so as to increase the efficiency of mature oilfields. Nanotechnology in EOR is classified into three categories: nanoparticles/nanofluids, nanoemulsions, and nanocatalysts. The advantages at the nanoscale are also described and discussed, including an overview of manufacturing methods as well as the concerns about their possible environmental impacts. Clearly, nanotechnology has the potential to boost EOR techniques, although there are still many questions and drawbacks to be tackled.

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Section: Chemistry and Kinetics Of The Processmentioning

confidence: 99%

Plenty of Room at the Bottom: Nanotechnology as Solution to an Old Issue in Enhanced Oil Recovery

2018

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“…A reaction mechanism involving water was proposed. It involves the protonation of the organosulfur, followed by structure opening and desulfurization, decarbonilation, and finally a WGSR . Moreover, experiments showed that changes in pH have an impact on the reaction rates.…”

Section: Reactions Of Heavy Oil Model Compounds In Ncw and Scwmentioning

confidence: 99%

“…39 Studies on the reactivity of organosulfur compounds in highpressure steam were performed using heavy oil model compounds such as thiophenes and hydrothiophenes. 40,41 Experiments were carried out at 300 °C, 85 bar, and varying reaction times between 1 and 28 days to approach conditions of steam stimulation of heavy oil reservoirs. It was observed that hydrolysis and thermolysis reactions occur to produce mainly H 2 S, CO 2 , CH 4 , short chain hydrocarbons and substituted thiophenes and hydrothiophenes.…”

Section: Energy and Fuelsmentioning

confidence: 99%

“…It involves the protonation of the organosulfur, followed by structure opening and desulfurization, decarbonilation, and finally a WGSR. 40 Moreover, experiments showed that changes in pH have an impact on the reaction rates. The addition of sulfuric acid to reduce pH increased reactivity in the system, which based on the amount of H 2 S generated had 10% thiophenes and 14% tetrahydrothiophene hydrolyzed in 14 days compared to 0.75% of thiophenes hydrolyzed after 28 days in the absence of the acid.…”

Section: Energy and Fuelsmentioning

confidence: 99%

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Application of Water in Hydrothermal Conditions for Upgrading Heavy Oils: A Review

et al. 2017

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The use of water in hydrothermal and supercritical conditions as a medium to upgrade heavy oil fractions has shown promising results and presents an interesting alternative for heavy oil processing. Water at these conditions improves transport properties increasing the solubility in the medium and reducing the viscosity of the oil, which facilitates the upgrading process. This review focuses on the use of water as a medium to recover and upgrade heavy oils. An analysis of the main reactions occurring, effect of process conditions, and role of water in the reaction mechanism is carried out based on experimental results found in the literature. Studies performed with model compounds that have enabled a proper understanding of the reaction mechanisms, kinetics, and effect of process conditions in the upgrading of heavy oil in near critical or supercritical water are included. An overview of the main challenges of the technology such as corrosion and salt deposition as well as some innovative reactor designs to solve them is provided. Information regarding research carried out in this field has been linked to the growing industrial interest in the technology showing recent developments and registration of patents on reactor designs and processes involving heavy oil upgrading in near and supercritical water.

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“…With this method, more heavy components of heavy oil are pyrolyzed to small molecules, and the viscosity of heavy oil reduced irreversibly eventually. These changes benefit the heavy oil exploitation [7][8][9][10][11][12][13][14][15][16]. This method is called "catalytic aquathermolysis".…”

Section: Introductionmentioning

confidence: 99%