Reservoir evaluation of sand beds in sapele field, onshore niger delta

Abstract

The Sand beds of the Sapele field have been evaluated to ascertain the viability of the field for hydrocarbon development using integration of the structural play and petrophysical indices. Pay sands were delineated using the quick look approach. A seismic horizon of interest was picked using a well control measure. The structural play reveal three major faults responsible for hydrocarbon migration and entrapment mechanisms which contributed to a three-way closure in the area. Litho-stratigraphic correlation revealed repetitive gamma-ray signatures across the wells, an indication of active fault zone, and this defines the complexity of the Sapele field. The gamma-ray signatures infer a clastic marine settings when compare with standard log motifs. Petrophysical results reveal very good pore volumes of over 20% with 0ver 15% effective and an excellent degree to transmit fluid (over 1000mD). The high hydrocarbon saturation of over 70% infer good producibility of the field. The results has extensively showed the viability of the Sapele field for good field development.