KFU. Card publication. Analysis of the composition and properties of heavy oils in situ by Low Field NMR relaxation method

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FEDERAL UNIVERSITY

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ANALYSIS OF THE COMPOSITION AND PROPERTIES OF HEAVY OILS IN SITU BY LOW FIELD NMR RELAXATION METHOD

Form of presentation

Articles in Russian journals and collections

Year of publication

2018

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Authors, employees of KFU

Volkov Vladimir Yakovlevich, author

Nurgaliev Danis Karlovich, author

Khasanova Nailya Midkhatovna, author

Other authors

Sakharov Boris Vasilevich, author

Bibliographic description in the original language

Volkov V.Ya.Analysis of the composition and properties of heavy oils in situ by Low Field NMR relaxation method / Volkov V.Ya, Sakharov B.V., Khasanova N.M., Nurgaliev D.K.//Georesources.- 2018, - 20(4), Part 1, pp. 308-323. DOI: https://doi.org/10.18599/grs.2018.4.308-323

Annotation

A special control program was created on the NMR analyzer that automatically tunes and measures the full FID curve, then switches to measuring the decay of the echo amplitude by the CPMG pulse sequence, and then the investigation ends with a joint processing of all the experimental data. This method makes it possible to measure the amplitudes of NMR signals and the relaxation times T2 of protons of heavy oil components in situ, including asphaltenes, without any perturbations in the analyzed system. Under the influence of paramagnetic centers located in asphaltenes,the amplitude-relaxation characteristics of oil protons are divided into 7 groups associated with solid asphaltenes in crystalline and amorphous states, resins with high and low density, aromatic and saturated compounds. The NMR amplitudes of these fractions correlate well with the group composition of heavy oils as determined by gravitational-chromatographic SARA method. SARA-NMR can be recommended to study oil c. in situ

Keywords

LF-NMR, vanadyl, SARA, asphaltenes, resins, saturated, aromatic compounds

The name of the journal

Georesources

URL

https://doi.org/10.18599/grs.2018.4.308-323

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

https://repository.kpfu.ru/eng/?p_id=193707&p_lang=2

Full metadata record

Field DC	Value	Language
dc.contributor.author	Volkov Vladimir Yakovlevich	ru_RU
dc.contributor.author	Nurgaliev Danis Karlovich	ru_RU
dc.contributor.author	Khasanova Nailya Midkhatovna	ru_RU
dc.contributor.author	Sakharov Boris Vasilevich	ru_RU
dc.date.accessioned	2018-01-01T00:00:00Z	ru_RU
dc.date.available	2018-01-01T00:00:00Z	ru_RU
dc.date.issued	2018	ru_RU
dc.identifier.citation	Volkov V.Ya.Analysis of the composition and properties of heavy oils in situ by Low Field NMR relaxation method / Volkov V.Ya, Sakharov B.V., Khasanova N.M., Nurgaliev D.K.//Georesources.- 2018, - 20(4), Part 1, pp. 308-323. DOI: https://doi.org/10.18599/grs.2018.4.308-323	ru_RU
dc.identifier.uri	https://repository.kpfu.ru/eng/?p_id=193707&p_lang=2	ru_RU
dc.description.abstract	Georesources	ru_RU
dc.description.abstract	A special control program was created on the NMR analyzer that automatically tunes and measures the full FID curve, then switches to measuring the decay of the echo amplitude by the CPMG pulse sequence, and then the investigation ends with a joint processing of all the experimental data. This method makes it possible to measure the amplitudes of NMR signals and the relaxation times T2 of protons of heavy oil components in situ, including asphaltenes, without any perturbations in the analyzed system. Under the influence of paramagnetic centers located in asphaltenes,the amplitude-relaxation characteristics of oil protons are divided into 7 groups associated with solid asphaltenes in crystalline and amorphous states, resins with high and low density, aromatic and saturated compounds. The NMR amplitudes of these fractions correlate well with the group composition of heavy oils as determined by gravitational-chromatographic SARA method. SARA-NMR can be recommended to study oil c. in situ	ru_RU
dc.language.iso	ru	ru_RU
dc.subject	LF-NMR	ru_RU
dc.subject	vanadyl	ru_RU
dc.subject	SARA	ru_RU
dc.subject	asphaltenes	ru_RU
dc.subject	resins	ru_RU
dc.subject	saturated	ru_RU
dc.subject	aromatic compounds	ru_RU
dc.title	Analysis of the composition and properties of heavy oils in situ by Low Field NMR relaxation method	ru_RU
dc.type	Articles in Russian journals and collections	ru_RU