Paleoenvironment Determination Using Seismic Coherence Technology

The main objective of this paper is to present application of seismic coherency technology over 3D seismic cube in order to derive information about paleoenvironment and facies spatial distribution. Technique was applied over 3D data in north-west part of Drava basin, which is situated on southern rim of Pannonian basin (Croatia). The Miocene \'Moslava&#269;ka gora\' formation contain lithotamnium limestones and biocalcarenite sandstones, one of the main reservoirs on the biggest Croatian onshore gas-condensate field Molve (Figure 1). Because of the high degree of exploration and development of Molve and surrounding fields, almost all structural traps were drilled. It is very useful to look out for remaining stratigraphic traps in this area. Also, according to paeloenvironment interpretation create new concept for remaining structural traps.<br>Three dimensional seismic data acquired over the area contain rich information about sedimentary facies distribution. Only amplitude data sometimes isn\'t enough to get a clear picture of paleoenvironment. Where amplitude time slices can\'t help coherence cube slices over a flatten horizon are more useful. The coherence slice clearly reveals stratigraphic features poorly visible on time slices.<br>