Geochemical features of organic matter in the Lower Cretaceous deposits of the Ozhoginskaya Suite (Indigiro-Zyryansky basin)-Reference-Cited by-同舟云学术

Geochemical features of organic matter in the Lower Cretaceous deposits of the Ozhoginskaya Suite (Indigiro-Zyryansky basin)

Published:2023-09-25 Issue:3 Volume:28 Page:384-397
ISSN:2686-9683
Container-title:Arctic and Subarctic Natural Resources
language:
Short-container-title:jour

Author:

Zueva I. N.¹^ORCID,Chalaya O. N.¹^ORCID,Kashirtsev V. A.²^ORCID,Glyaznetsova Yu. S.¹^ORCID,Lifshits S. Kh.¹^ORCID

Affiliation:

1. Institute of Oil and Gas Problems, Siberian Branch of the Russian Academy of Sciences

2. Institute of Oil and Gas Problems, Siberian Branch of the Russian Academy of Sciences; Trofimuk Institute of petroleum Geology and Geophysics, Siberian Branch of the Russian Academy of Sciences

Abstract

Limited available data on molecular geochemistry indicate the predominance of terragenous organic matter in the source material of the Lower Cretaceous deposits of the Ozhoginskaya suite, which allows it to be considered gasgenerating. However, based on the mixed nature of the source material, this suite could possess potential for liquid hydrocarbon generation. The geochemical features of the organic matter were studied using classical bituminology, Fourier transform infrared spectroscopy, gas chromatography, and mass spectrometry. The results showed a regular distribution of alkanes with a predominance of low-molecular-weight homologues with a maximum at nC15-19 and low values of ∑n.c.-nC20/∑nC21-c.c., vanadylporphyrin complexes. Thus, the contribution of algal material could be significant to the composition of the fossil organic matter of the Lower Cretaceous Ozhoginsky suite with different ratios of terrigenous and aquatic components in the section. Our results on the Ozhoginskaya suite showed the similarity of geochemical parameters with the Upper Bastakh suite of the Upper Jurassic, the features of bitumoid composition, which were mainly due to the predominance of planktonic-algal material capable of generating a large amount of liquid hydrocarbons. This established similarity raises the estimate of the oil generation potential of the organic matter of the Lower Cretaceous deposits of the Ozhoginskaya suite, along with the high gas generation potential inherent in terragenous organic matter.

Publisher

Academy of Sciences of the Republic of Sakha (Yakutia)

Subject

General Medicine

Reference28 articles.

1. Chersky N.V. Prospects for the oil and gas potential of the northeast of the Yakut Autonomous Soviet Socialist Republic. Geology of gas fields. Moscow: GOSINT; 1959: 26–62. (In Russ.)

2. Chochia N.G., Baranova Z.E., Volnov D.A. Prospects for the oil and gas potential of the Zyryansky trough. Tectonics and oil and gas content of the east of the USSR: Proceedings of VNIGRI, Issue 309. Leningrad; 1972: 133–150. (In Russ.)

3. Ivanov V.V., Semenov G.A., Gavrilov B.P. Lithological-bitumineralogical characteristics of the Jurassic and Cretaceous deposits of the Indigiro-Zyryansky trough. Problems of oil and gas content in the North-East of the USSR: Proceedings of North-East Interdisciplinary Institute, Issue 49. Magadan; 1973:108–129. (In Russ.)

4. Ivanov V.V., Klubov B.A. Naphthides and naphthoids of the North-East of the USSR. M.: Nauka. 1979. 147 (In Russ.)

5. Gaiduk V.V. Reconstruction of the structure of thrust belts and local assessment of their oil and gas content on the example of the Indigiro-Zyryansky, Predverkhoyansky troughs and the Nyuysko-Dzherba depression: Abstr… Diss. Dr.Sci., Novosibirsk. 1995. 37 (In Russ.)