Using automatically generated 3D rose diagrams for correlationof seismic fracture lineaments with similar lineaments fromattributes and well log data

摘要

Detection and characterization of fractures in reservoirs is of great importance for maximizing hydrocarbon productivityand recovery efficiency. Coherence and curvature are two seismic attributes that have shown promise in identifying groupsof closely spaced fractures or interconnected fracture networks. Curvature attributes, in particular, exhibit detailed patternsfrom fracture networks. We report the automated generation of rose diagrams from seismic attributes throughout the 3Dvolume which can be visually correlated to the lineaments seen on different seismic attributes like coherence and quanti-tatively correlated to the rose diagrams available from image logs. Since these rose diagrams are generated at regular gridpoints on each time slice, they are essentially 3D rose diagrams. Visualization of these volumetric 3D rose diagrams withother discontinuity attributes lends confidence to the interpretation of fracture lineaments.