Hydrogeochemical indicators of the hypergenesis zone of the Tungusska basin and their oil-geological significance

Abstract

Geochemical and hydrogeological oil and gas exploration was carried out in the west of the Siberian platform in the basin of the river Podkamennaya Tunguska, where 6 thousand groundwater sources and streams have been studied. The main informative hydrogeochemical indicators in the Tunguska basin in the upper hydrodynamic zone are: the type of water, the nature of mineralization, the content of chlorides, sulfates, bromine, iodine, some organic substances and microelements, as well as an indicator of water metamorphization. 150 hydrogeochemical anomalies associated mainly with geodynamic active zones have been established. In general, all the studied hydrogeochemical indicators indicate a good closure of deep horizons and a favorable environment for the preservation of deposits in the depths of local positive structures.