Title: Delineating Hydrocarbon Bearing Zones Using Comparative Study Of Elastic Impedance And Modified Extended Elastic Impedance
Authors: Balogun A. O. and Dagogo T.
Volume: 9
Issue: 12
Pages: 25-31
Publication Date: 2025/12/28
Abstract:
To reduce uncertainty and risk in the choice of drilling locations and locating by passed hydrocarbon, reservoir characterization and evaluation plays vital role. Successful modeling of the subsurface can allow the physical properties of a prospect to be determined more accurately, and hence significantly improve the efficiency of the hydrocarbon exploitation process. In this view, a comparative analysis of both Elastic Impedance and Modified Extended Elastic Impedance inversion have been used to predict and find the productive zones of a reservoir using well data and seismic data. Elastic Impedance and Modified Extended Elastic Impedance logs at near and far angles of incidence have been crossplotted to find the desired productive parts of the formation. Subsequently, Elastic Impedance and Modified Extended Elastic Impedance and Modified Extended Elastic Impedance logs at 30 degrees were used to build the initial low frequency models for the seismic inversion volumes respectively. For this purpose, three horizons were mapped and interpreted to determine geological inputs for the impedances model building. However, the inversion results of the Modified Extended Elastic Impedance gave superior results at the well locations and away from the locations by revealing more details than the Elastic Impedance volume. Consequently, the Modified Extended Elastic Impedance volume would greatly predict and locate the productive zones of a reservoir.