Determination of gas reservoir(s) using AVO inversion within “XY” field offshore Niger Delta

Abstract

Abstract The AVO inversion analysis of pre-stack seismic data of “XY” field located within the offshore, Niger Delta Basin has been considered in this research work with the aim of using AVO inversion to delineate gas reservoirs within the field. Three different inversion techniques are carried out in order to obtain accurate reservoir signature. The conventional AVO inversion analysis of the field do not identify the gas reservoirs clearly as there are other zones without gas with similar signatures, however, the cross-plots analysis of elastic parameters and the inverted volumes are used to delineate two gas reservoirs at 2000 and 2100\u202fms. Conclusively, the inversion techniques help to map the reservoir zone in a better way by increasing the vertical resolution. AVO inversion analysis as used in this research help for better understanding of the physical properties of the delineated reservoirs.