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PrePatom trough oil and gas potential and fluid dynamic system

https://doi.org/10.21285/2686-9993-2025-48-1-101-111

EDN: QTLKIS

Abstract

The purpose of the conducted research was to assess the oil and gas potential of the PrePatom trough and the leading role of geofluid dynamic processes in the formation of hydrocarbon generation centers. The study used the data of drilling and geophysical works, as well as research materials published in the open press. Many researches recognise the Riphean pericratonic troughs of the Siberian Platform as the main oil and gas generating structures within which the process of hydrocarbon generation had taken place, and probably is still going on with subsequent migration of hydrocarbons into favorable tectonic structures of the platform. The dynamic system generating and concentrating hydrocarbons is a function of geological space and time. The Riphean sediment strata characterized by great thickness, wide distribution over the platform area and diversity of lithological composition are the most ancient oil and gas generating sediments on the planet. The giant Kuyumba-Yurubchen-Tokhom oil and gas accumulation area is confined to the Riphean sediments. It is a unique object not only for the Siberian platform but also for the entire planet. The fluid dynamic system of the Riphean-Vendian-Lower Cambrian strata of the PrePatom trough ensures the formation of hydrocarbon generation centers and formation mechanism of  hydrocarbon deposits, which is controlled by a combination of factors of geological development of the trough, its tectonic structure 
features, lithological composition, as well as large thicknesses of sedimentary cover deposits.

About the Author

L. A. Rapatskaya
Irkutsk National Research Technical University
Russian Federation

Larisa A. Rapatskaya, Cand. Sci. (Geol. & Mineral.), Associate Professor, Professor of the Department of Oil and Gas Geology, Institute of Subsoil Use

Irkutsk


Competing Interests:

The author declares no conflicts of interests.



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For citations:


Rapatskaya L.A. PrePatom trough oil and gas potential and fluid dynamic system. Earth sciences and subsoil use. 2025;48(1):101-111. (In Russ.) https://doi.org/10.21285/2686-9993-2025-48-1-101-111. EDN: QTLKIS

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ISSN 2686-9993 (Print)
ISSN 2686-7931 (Online)