Diffraction imaging (DI)

This topic deal with implementation of Diffraction imaging technology in Geomage g-Platform software.

Geomage offers a new direct method to detect and characterize fractures and other small scale reservoir heterogeneities.

The Geomage Diffraction Imaging (DI) method is based on a new moveout time

correction which adequately describes diffraction events. Optimal summation of the diffracted events and attenuation of the specular reflections allow creating an image containing mostly of diffraction energy.

The result of the DI is the full-azimuth seismic image which primarily contains optimally stacked diffraction events. Integration with petrophysical data sources provides calibration information specific to a prospect area. The diffraction cube

volume contains important information identifying local heterogeneities and discontinuities in the sub-surface. The information helps to optimize

horizontal drilling and correct placement of exploration wells.

Diffraction imaging provides a physical attribute showing disturbance in seismic wavefield.

Main applications:

•Fracture detection and location of naturally fractured reservoirs zones

•Salt body contouring

•Fault detection

•Prediction of fracture swarms in tight shales

•Avoid possible unwanted fluid pathways

•Map sources of velocity anisotropy