Paleogeographic reconstructions of the Paleozoic Series of the West Taimyr potential oil and gas bearing area based on drilling data

Background. Nowadays, West Taimyr as a part of Enisey-Khatanga trough is considered to have a highly potential petroleum play which lead to arising exploration interest of Gazprom Neft. The first exploration well was drilled on the left bank of the Enisey Bay in 2021 and reached a Middle Ordovician of the Paleozoic Series. Exploration well results significantly expanded the understanding of region’s paleogeography and depositional environment of Ordovician, Silurian and Devonian times.
Aim of present paper is to highlight the results of paleogeographic reconstructions based on drilling results and seismic data interpretation.
Materials and methods. 2D seismic data, core based sedimenthological analysis and well log interpretation were used to restore paleogeography of the studied area. Seismic correlation of main horizons VIa, VII, VII_bot, top_D1_carb, VIIa, VIIa_bot, top_O_carb, VIII allowed to map several thickness complexes for different seismic units within a stratigraphic interval from Middle Ordovician to Upper Devonian. Thickness maps together with integrated dataset of seismic, well log and core data interpretation allowed to build a base for paleogeographic reconstructions.
Results. As a result of performed paleoreconstructions, a set of paleogeographic maps of the West Taimyr potential oil and gas bearing area was prepared.
Conclusion. Performed paleoreconstructions provide a necessary basis for further exploration works within a potential oil and gas bearing area and enable geoscientists to create a new basin model.

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