3-D coherency cube technique applied to fine interpretation.
She Deping e t al. She Deping,Institute of Petroleum Geophysical Prospecting, CNSPC, Nanjing 210014
The 3-D coherency cube is a recently developed seismi c interpretation t echnique. It uses the similarity of seismic signals between adjacent traces in 3 -D seismic volume to describe the lateral stratal and lithologic inhomogeneity. This paper introduces the mathematical basis of multi-trace coherency techniqu e. Real data test shows that the 3-D coherency technique can determine the faul t plane extent and its detailed features quickly and accurately, and the stratal occurrency information provided by the technique can be used to study the struc tural and sedimentary evolution system of object reservoirs.