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Features of the hydrogeological stratification of oil and gas bearing deposits in the western part of the Yenisei-Khatanga basin

The article presents results and findings of the research into stratification of the hydrogeological section of western areas of the Yenisei-Khatanga basin localized in the Siberian Arctic zone. The identified two hydrogeological structural stages in the study area include the Paleozoic (undivided), Triassic, Lower-Middle Jurassic, Upper Jurassic, Neocomian, Aptian-Albian-Cenomanian, Upper Cretaceous and Paleogene-Quaternary water-bearing complexes. There have been recognized as many as eleven aquifers and eleven confining beds formed within the area where the established hydrogeological units are found not ubiquitously distributed, which is associated with the sedimentary basin evolution. A considerable part of the horizons have failed to be included in the hydrogeological section either due to the erosion processes within the Messoyakha inclined ridge or their pinching out in the borders of the basin.