Integrated petrophysical characterization of the WABI field: Delineation and volumetric assessment of shallow and deep hydrocarbon reservoirs

Abstract

This study delivers a comprehensive petrophysical evaluation of the WABI field, offshore Niger Delta, focusing on two principal reservoirs. Wireline log data from wells WABI-5, WABI-6, WABI-7, and WABI-11 were processed in Petrel to define reservoir boundaries, lithofacies, and fluid saturations. Reservoir A exhibits pronounced heterogeneity: WABI-6 records outstanding qualities (NTG 0.984, permeability 2010 mD, oil saturation 0.604), whereas WABI-5 demonstrates diminished reservoir performance. In contrast, Reservoir B presents consistently high quality, averaging NTG 0.962, permeability 2993 mD, and oil saturation 0.706, despite marginally lower porosity. Spatial mapping of these parameters identifies the most promising hydrocarbon-bearing zones and informs optimized well placement. By reducing subsurface uncertainty and highlighting zones of enhanced productivity, these results underpin strategic development planning and improve the economic outlook for hydrocarbon recovery in the WABI field.