Azimuthal Seismic Pilot for Fault and Fracture Detection-Abu Dhabi Case Study

摘要

An azimuth-dependant-processing pilot study was carried out in a large Middle East field to determine if this technology has potential to identify fracture-permeability pathways. The field is heavily faulted and fractured, with good well control. Anisotropy can be linked in a full evaluation to fault/fracture density and orientation. The anisotropy can be measured by differences in seismic-travel times or amplitudes/seismic attributes measured in different azimuth seismic cubes. Interpretation and validation of the results suggest that value is maximized by integrating multiple attributes, including horizon mapping for time differences, amplitude extractions for reflectivity differences, and result validation with available well calibration.