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Low-field NMR Method for Analysis of Heavy Oils without Extraction of Asphaltenes

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dc.contributor Казанский федеральный университет
dc.contributor.author Khasanova Nailia Midhatovna
dc.contributor.author Sakharov Boris Vasilevich
dc.contributor.author Volkov Vladimir Yakovlevich
dc.contributor.author Nurgaliev Danis Karlovich
dc.date.accessioned 2019-12-02T10:56:17Z
dc.date.available 2019-12-02T10:56:17Z
dc.date.issued 2017
dc.identifier.citation Khasanova N.M. Low-field NMR Method for Analysis of Heavy Oils without Extraction of Asphaltenes / N.M. Khasanova, B.V. Sakharov, V.Y. Volkov, D.K. Nurgaliev // Vienna SGEM. - 2017. - Vol.17. - Is.15. - P. 297-304.
dc.identifier.uri https://dspace.kpfu.ru/xmlui/handle/net/152021
dc.description.abstract For the analysis of heavy oil samples of the Ashalchinskoye deposit the combined nuclear magnetic resonance (NMR) method to measure the free-induction decay (FID) together with the Carr-Purcell-Meiboom-Gill (CPMG) echo signal's decay was used. The measurements were carried out on a NMR analyzer Chromatek-Proton 20M, operating at a frequency of 20 MHz. Special control program was created on the NMR analyzer, which automatically tunes and measures full FID curve, then switches to measuring the echo amplitudes decay by the CPMG pulse sequence, and the study is completed by co-processing together all experimental data. This technique makes it possible to measure the amplitudes of the NMR signals and the relaxation times T2 of the protons of heavy oil components in situ, including asphaltenes, without introducing any perturbations into the analyzed system. Under the influence of paramagnetic centers included to the composition of asphaltene, mainly vanadyl complexes on EPR data, the amplitude-relaxation characteristics of protons in the samples are divided into 6 groups related to solid asphaltenes (in crystalline and amorphous states), resins (high and low density), aromatic and saturated compounds.
dc.language.iso en
dc.relation.ispartofseries Vienna SGEM. - 2017. - Vol.17, Is.15. - P.297-304.
dc.rights открытый доступ
dc.subject SARA
dc.subject LF-NMR
dc.subject Vanadyl
dc.subject Relaxation
dc.subject Process Monitoring
dc.subject.other Геология
dc.title Low-field NMR Method for Analysis of Heavy Oils without Extraction of Asphaltenes
dc.type Article
dc.contributor.org Институт геологии и нефтегазовых технологий
dc.description.pages 297-304
dc.relation.ispartofseries-volume 17(15)
dc.pub-id 215191
dc.identifier.doi 10.5593/sgem2017/15

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