Translations:Coherence cube (C3)/14/en

A coherence cube uses 3D seismic discontinuities to detect faults and stratigraphic features. As the input to the coherence-cube method, a 3D volume (cube) of data is selected. Generally, this selection is a geologic image resulting from the seismic-processing stage, such as the migrated record. Discontinuity processing systematically cuts through the data volume trace by trace without regard for the geologic horizons. An attribute is computed that gives a measure of the data dissimilarity from trace to trace. The output is a new 3D volume of data (the enhanced image made up of dissimilarity attributes). This dissimilarity image reveals faults and other subtle stratigraphic changes that stand out as prominent anomalies in otherwise homogeneous data. Discontinuity processing gives a new way to view seismic data by revealing the degree of dissimilarity from trace to trace. Interpretation can be based on the image of dissimilarity as well as on the original geologic image. Use of both types of image makes interpretation easier and more reliable.