New data on the composition of organic matter of deep-seated rocks of Bashkortostan by NMR in a low magnetic field

The study of the organic matter of Riphean-Vendian deposits, the features of its distribution are the subject of research by many authors. The problem of hydrocarbon of these deposits remains relevant. We have conducted studies of deep-seated rocks of the Lower Riphean of the kaltasinskaya suite of...

Full description

Saved in:
Bibliographic Details
Published in:IOP conference series. Earth and environmental science 2020-05, Vol.516 (1), p.12022
Main Authors: Sitdikova, L M, Khasanova, N M, Korepanov, E S, Sakharov, B V, Volkov, V Ya, Lozin, E V
Format: Article
Language:English
Subjects:
Asphaltenes
Heat treatment
Heat treatments
Hydrocarbons
Liquid phases
Magnetic fields
Magnetic induction
Magnetic relaxation
NMR
Nuclear magnetic resonance
Organic matter
Relaxation time
Research methods
Resins
Rocks
Solid phases
Waveforms
Citations: Items that this one cites
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The study of the organic matter of Riphean-Vendian deposits, the features of its distribution are the subject of research by many authors. The problem of hydrocarbon of these deposits remains relevant. We have conducted studies of deep-seated rocks of the Lower Riphean of the kaltasinskaya suite of the Eastern-Askinskaya area, with an increased content of organic matter in individual intervals. In addition to standard research methods, the method of nuclear magnetic relaxation in a low magnetic field was used. This method allows determining the phase state of organic matter in the original rock without any impact and after isothermal heating of the rock at 350°C. The free induction signal and the type of solid-phase signal, which corresponds to the waveform for the asphaltene component of the oil, were analyzed. The predominant part of the liquid-phase signal - about 35%, is characterized by a transverse relaxation time of 540 ¼s, corresponding to the resinous component of organic matter. The quantitative ratio of asphaltenes before and after heat treatment was also analyzed. A significant decrease in its amount was recorded. During thermal exposure, more than 55% of light, more mobile hydrocarbon molecules are formed in the liquid-phase part of organic matter.
ISSN:1755-1307
1755-1315
DOI:10.1088/1755-1315/516/1/012022