**3. Reservoir stratigraphic architecture, facies and well log analysis**

The field covered a distance of more than 7 km from the east to the west. The lithologic well correlation indicated that most of the sand-bodies (N5.2 and others) are laterally extensive across the oilfield (**Figures 2** and **3b**). A key stratigraphic marker used to constrain the correlation is the Qua Iboe Shale (QIS) (**Figure 3a**). Gamma ray trends forms the basis for delimiting reservoir tops and bases (**Figure 3a** and **b**).

The N5.2 sand is a high quality reservoir characterized by sand with some silt and shale fractions in almost negligible proportions. It is laterally extensive and cuts across the field covering a distance of more than 7 km, and well developed towards the eastern flank. It displays a layer-cake architecture with gross thickness between 33.82 and 105.13 m. The N5 reservoir displays stacked highstand parasequence set and occurred in six sub-units in wells located in the eastern part of the field (**Figure 3a** and **b**).
