Petroleum potential of Jurassic regional reservoirs in the Yenisei-Khatanga and adjacent Gydan petroleum-bearing areas

Abstract

The paper discusses methods and results of the petroleum potential quantification in regional Jurassic reservoirs within the Yenisei-Khatanga petroleum-bearing area (PBA) and eastern Gydan PBA. The structure and distributions of initial in-place hydrocarbons in reservoirs, petroleum-bearing regions, and by categories of reserves and resources are presented. The petroleum potential was assessed by a geological method from specific densities of HC reserves per unit area, on the basis of comprehensive analysis of tectonic, lithologic-facies and geochemical criteria for determination of petroleum potential. According to the author's estimates, the prognosed initial hydrocarbon resources in Jurassic reservoirs within the Yenisei-Khatanga and eastern Gydan PBR amount to 12505 million tons total hydrocarbon equivalent, which includes 10935 billion m (87.5%) gas, and 1570 million tons (12.5%) condensate.