“…The average porosity for the Delta dep-belt was 23.94 %, 11.22 % for Deep Offshore depo-belt and 11.72 % for the Upper Delta at standard atmosphere. The threshold porosity was attested to be 10 % by Eigbe [ 46 ]. The average permeabilities for Delta, Deep Offshore and Upper Delta at standard atmosphere were 183.5mD, 276mD and 279mD respectively.…”