The Geological Features of JV1-1 Formation as an Example of Severo-Pokachevskoe Oilfield

Upper Jurassic sediments are considered to be main sources of oil in Western Siberia. However seismic and-geologic features of the wave fields formation within this interval does not allow reservoir properties to be detected based on stacked seismic data due to strong reflection from the boundary of the Bazhenov formation. Consistent usage of different types of inversions based on seismic and well drilling data makes it possible to determine pay zones within Upper Jurassic sediments, to study their geologic features and to determine porosity and permeability. In this regard pretty unexpected details may be revealed. This is important for understanding of depositional environments that can’t be determined from seismic amplitude cubes.