Updating of the Geological Structure of the Neocomian Deposits within the Novoportovskoye Field During Prospecting Surveys

Integrated interpretation of borehole data and detailed 3D seismic operations at the Novoportovskoye field made it possible to fundamentally change the model of the geological structure of the main productive interval: to breakdown in detail the section of the wedge-shaped structure, to update the structure of all the strata of the Novoportovskoye group, the position of oil- and gas-water contacts, and tectonic disturbances that control the deposits. Under the conditions of lithologic-facies variability of lateral uniform deposits, lithologic-stratigraphic 1D log columns provide an extremely simplified model of real sections. The strata of the Neocomian clinoform sequence cannot be correlated, relying solely on drilling data. The similarity of the logging characteristics of the reservoirs often does not indicate the identity of the reservoirs, but only the similar facies environments in which these deposits accumulated. There is a lot of evidence for this statement in various regions of Western Siberia [ 1 ].