Hydrocarbon megareservoirs of apt-senomanian deposits of the northern regions of Western Siberia
The features of hydrocarbon (HC) accumulations of the upper productive complex of the northern regions of the West Siberian oil and gas basin (OGB), covering the age interval from the Aptian to the Cenomanian, are considered. The lithofacies characteristics of the complex, oil and gas content are given, the placement of hydrocarbon accumulations with different categories of reserves is estimated. A significant number of deposits with gigantic hydrocarbon reserves allows us to consider the deposits of the upper productive mega-complex, composed of the Pokur suite, as mega-reservoirs.