Elastic Impedance Volumes (EI)
In order to get still more information from Pre Stack data and after creation of Supergathers and Angle Gathers, we produce Elastic (EI) Impedance volumes.
Following a comprehensive and very detailed analysis of gathers, using several incidence angles and under diverse processing conditions, we obtain specific Angle Gathers containing the most relevant part of the reflective spectrum, providing an additional and powerful tool for anomaly finding.
Different angle sets (Near and Far offsets) are then separated and classified by relevance before proceeding to the inversion phase, product of which are new seismic volumes that together with a deep analysis (including plottings, comparisons, regression minimizations, etc.) will yield a final volume containing AVO anomalies.