Sedimentological Features of Jurassic Deposits of Novoportovskoe Field

The aim of this work was to create sedimentological model suitable for field development. Novoportovskoe field was discovered in 1964, but its pilot drilling began only this year. All preserved data was compiled to understand its depositional history which is considered as the most complex in region. Seismic data didn’t provide good base for facies modeling, so mostly core and well-log data was analyzed. Lower Jurassic strata were deposited in deltaic conditions with periodical sea-level change. Middle Jurassic strata were deposited in continental conditions as fluvial sediments of channels, crevasse splays and overbank muds. The distribution of reservoirs and trends will be used for static models to maintain drilling process