Нydrogeological characteristics and analysis of the compatibility of disposal and formation water at the field N in Western Siberia

The article presents the hydrogeochemical characteristics of a field located in the West Siberian megabasin in Khanty-Mansiysk Autonomous Okrug — Ugra, the peculiarity of the hydrogeochemical conditions of which is confined to the elysium lithostatic system and inversion hydrogeochemical zonality. This is characterised by a decrease in mineralisation with depth and a change in formation water type. This is related to the transformation of organic and mineral matter in sedimentary rocks at the elision stage of the West Siberian megabasin development during their sinking and compaction. The object of placement of formation and used water is the Aptian-Albian-Cenomanian hydrogeological complex.The article calculates the compatibility of formation waters of the Aptian-Albian-Cenomanian hydrogeological complex and hosted waters, and also estimates the probability of swelling of clay minerals in the reservoirs of this complex.