KFU. Card publication. Qualitative and Quantitative Analysis of Heavy Crude Oil Samples and Their SARA Fractions with 13C Nuclear Magnetic Resonance

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QUALITATIVE AND QUANTITATIVE ANALYSIS OF HEAVY CRUDE OIL SAMPLES AND THEIR SARA FRACTIONS WITH 13C NUCLEAR MAGNETIC RESONANCE

Form of presentation

Articles in international journals and collections

Year of publication

2020

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Authors, employees of KFU

Al-Muntaser Amin Akhmed Mokhammed , author

Varfolomeev Mikhail Alekseevich, author

Gafurov Marat Revgerovich, author

Efimov Sergey Vladimirovich, author

Klochkov Vladimir Vasilevich, author

Rakhmatullin Ilfat Zufarovich, author

Tyurin Vladimir Aleksandrovich, author

Bibliographic description in the original language

Qualitative and Quantitative Analysis of Heavy Crude Oil Samples and Their SARA Fractions with 13C Nuclear Magnetic Resonance / I. Rakhmatullin, S. Efimov, V. Tyurin, M. Gafurov, A. Al-Muntaser, M. Varfolomeev, V. Klochkov // Processes. – 2020. – V. 8. – Article 995.

Annotation

Abstract Nuclear magnetic resonance (NMR) approaches have unique advantages in the analysis of crude oil because they are non-destructive and provide information on chemical functional groups. Nevertheless, the correctness and effectiveness of NMR techniques for determining saturates, aromatics, resins, and asphaltenes (SARA analysis) without oil fractioning are still not clear. In this work we compared the measurements and analysis of high-resolution 13C NMR spectra in B0 ≈ 16.5 T (NMR frequency of 175 MHz) with the results of SARA fractioning for four various heavy oil samples with viscosities ranging from 100 to 50,000 mPa?s. The presence of all major hydrocarbon components both in crude oil and in each of its fractions was established quantitatively using NMR spectroscopy. Contribution of SARA fractions in the aliphatic (10–60 ppm) and aromatic (110–160 ppm) areas of the 13C NMR spectra were identified. Quantitative fractions of aromatic molecules and oil functional groups were determined. Aromaticity factor and the mean length of the hydrocarbon chain were estimated. The obtained results show the feasibility of 13C NMR spectroscopy for the express analysis of oil from physical properties to the composition of functional groups to follow oil treatment processes.

Keywords

13C NMR spectroscopy, crude oil, oil fraction, quantitative composition, SARA, aromaticity

The name of the journal

Processes

URL

https://www.mdpi.com/journal/processes

Please use this ID to quote from or refer to the card

https://repository.kpfu.ru/eng/?p_id=237637&p_lang=2

Resource files

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processes_08_00995_v2.pdf	2,07	pdf	show / download

Full metadata record

Field DC	Value	Language
dc.contributor.author	Al-Muntaser Amin Akhmed Mokhammed	ru_RU
dc.contributor.author	Varfolomeev Mikhail Alekseevich	ru_RU
dc.contributor.author	Gafurov Marat Revgerovich	ru_RU
dc.contributor.author	Efimov Sergey Vladimirovich	ru_RU
dc.contributor.author	Klochkov Vladimir Vasilevich	ru_RU
dc.contributor.author	Rakhmatullin Ilfat Zufarovich	ru_RU
dc.contributor.author	Tyurin Vladimir Aleksandrovich	ru_RU
dc.date.accessioned	2020-01-01T00:00:00Z	ru_RU
dc.date.available	2020-01-01T00:00:00Z	ru_RU
dc.date.issued	2020	ru_RU
dc.identifier.citation	Qualitative and Quantitative Analysis of Heavy Crude Oil Samples and Their SARA Fractions with 13C Nuclear Magnetic Resonance / I. Rakhmatullin, S. Efimov, V. Tyurin, M. Gafurov, A. Al-Muntaser, M. Varfolomeev, V. Klochkov // Processes. – 2020. – V. 8. – Article 995.	ru_RU
dc.identifier.uri	https://repository.kpfu.ru/eng/?p_id=237637&p_lang=2	ru_RU
dc.description.abstract	Processes	ru_RU
dc.description.abstract	Abstract Nuclear magnetic resonance (NMR) approaches have unique advantages in the analysis of crude oil because they are non-destructive and provide information on chemical functional groups. Nevertheless, the correctness and effectiveness of NMR techniques for determining saturates, aromatics, resins, and asphaltenes (SARA analysis) without oil fractioning are still not clear. In this work we compared the measurements and analysis of high-resolution 13C NMR spectra in B0 ≈ 16.5 T (NMR frequency of 175 MHz) with the results of SARA fractioning for four various heavy oil samples with viscosities ranging from 100 to 50,000 mPa?s. The presence of all major hydrocarbon components both in crude oil and in each of its fractions was established quantitatively using NMR spectroscopy. Contribution of SARA fractions in the aliphatic (10–60 ppm) and aromatic (110–160 ppm) areas of the 13C NMR spectra were identified. Quantitative fractions of aromatic molecules and oil functional groups were determined. Aromaticity factor and the mean length of the hydrocarbon chain were estimated. The obtained results show the feasibility of 13C NMR spectroscopy for the express analysis of oil from physical properties to the composition of functional groups to follow oil treatment processes.	ru_RU
dc.language.iso	ru	ru_RU
dc.subject	13C NMR spectroscopy	ru_RU
dc.subject	crude oil	ru_RU
dc.subject	oil fraction	ru_RU
dc.subject	quantitative composition	ru_RU
dc.subject	SARA	ru_RU
dc.subject	aromaticity	ru_RU
dc.title	Qualitative and Quantitative Analysis of Heavy Crude Oil Samples and Their SARA Fractions with 13C Nuclear Magnetic Resonance	ru_RU
dc.type	Articles in international journals and collections	ru_RU