On in situ hydrogen sulfide evolution and catalytic scavenging in steam-based oil sands recovery processes

Kapadia, Punitkumar R.; Wang, Jacky; Gates, Ian D.

doi:10.1016/j.energy.2013.10.070

Cited by 5 publications

(1 citation statement)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…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.

View full text Add to dashboard Cite

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.

show abstract