Effective Use of Seismic Interpretation for the Tasks of Geological Modeling

Consistency of seismic, geological and well data is an important task in the reservoir modeling. Conducting seismic interpretation in view of error determination and application of obtained results in creation of ensemble of realizations of the structural model allows for a probabilistic assessment of initial OIP and risk determination in well placement decisions, research conduction, etc. This paper discusses the impact of uncertainties of seismic data on initial OIP for fields with complex tectonic structure when turning from drilled to undeveloped parts of the field. It is shown that structural factor determined by seismic data greatly influences the spread of initial OIP probability estimates P90-P50-P10. A methodology is described for uncertainty estimation on the stage of seismic interpretation and results utilization for reservoir model construction.