Structural-tectonic Interpretation of 3D Seismic Data on Ježevo Oil Field

Using the programme package Petrel, the three-dimensional seismic interpretation of the Ježevo oil field has been made, in order of defining the structural-tectonic relations and developing new hydrocarbon reserves. Based on the well logs and the data from the cores, the lithology log plot have been made and both the top and bottom of the Gama sandstone series have been identified. E-log marker Rs7 (Sarmatian/Pannonian), Rs5(Lower/Upper Pannonian), Z'(Pannonian/Pontian), Rφ(Lower/Upper Pontian), and the structural-tectonic interpretation of the 3D seismic data have also been made. For reliable settings of lithological limits on the seismic section, the one-dimensional modeling (synthetic seismogram) has been used. We have created a new model that is based on 3D seismic interpretation and contains the tectonic complex limiting the reservoir. In order to achieve a more accurate interpretation of seismic horizons and fault complex, we have used seismic trace and horizon attributes, as well as continuity/discontinuity attributes. The seismic attributes analysis helped define improved collector characteristics, so that, new hydrocarbon reserves could be developed in the future.