Regional Middle-Upper Jurassic reservoirs in the Yenisei-Khatanga and neighbouring Gydan petroleum areas within the Siberian sector of arctic: quantitative prediction of oil and gas occurrence

The authors present the results of oil and gas occurrence quantitative prediction for the Upper-Middle Jurassic Oxfordian, Bathonian, and Aalenian-Bajocian regional reservoirs in the Yenisei-Khatanga and neighbouring territory of the Gydan petroleum areas. The work is based on structural model previously developed and published by the authors, as well as reconstructed settings of each mentioned reservoir formation together with their constituents (permeable sequences and impermeables). Tectonic, lithofacies, and geochemical criteria of reservoir petroleum potential assessment are discussed. Methodology and results of quantitative estimation of regional reservoir petroleum potential accompanied by the petroleum potential maps for each reservoir are considered. Structure of HC resources is presented, namely: distribution of total initial HC reserves in accordance with fluid content, resources and reserves category, regional reservoirs, and oil and gas bearing areas