Influence of facies and tectonic structure on the reservoir properties distribution

The lithofacies features influence of productive strata and a system of tectonic faults on the reservoir properties distribution of Jurassic deposits one of the area of Western Siberia was analysed. Main productive strata in this place is Tyumen suite. The facies model of field was updated according reconstruction of sedimentation environment by electrometric facies models (by Muromcev V. S), interpretation results of seismic and core descrition. Dedicated sedimentation zones show main conception of Western Siberia basin evolution in Jurassic. Lithofacies analysis allow to identify main features of sedimentation zones, find out a reasons of uneven reservoir properties distribution. Also influence of tectonic faults system on reservoir properties of productive layers was found. Data summation help update fault model and highlight new low-amplitude faults. Next comparing maps of initial and remaining recoverable reserves of oil with lithofacies and fault model of reservoir rock help identify reason of zones with high density deposits forming and develop most effictient stimulation of oil recovery.