Hydrogeochemical conditions of oil and gas areas in Yamalo-Nenets oil and gas producing region (Part 1)

Abstract

The object of our research is hydrogeochemical conditions of the Mesozoic hydrogeological basin within Yamalo-Nenets oil and gas bearing region. The Mesozoic basin includes the Aptian-Albian-Cenomanian, Neocomian and Jurassic hydrogeological complexes. These complexes contain thermal and mineralized water. The water exchange in the basin in question is significantly hampered; this is reflected in hydrogeochemical conditions. The article presents the distribution maps of water types in three complexes of the Mesozoic basin, maps of changes in the magnitude of mineralization and the content of the most valuable microcomponents (iodine and bromine). It has been established that with the depth (from the Aptian-Albian-Cenomanian to the Jurassic complex) the area of distribution of sodium bicarbonate-type water increases. Further directions of groundwater research in the region are noted.