Three Dimensional Seismic/Well Logs and Structural Interpretation over ‘X – Y’ Field in the Niger Delta Area of Nigeria

A Three Dimensional seismic, well logs and structural interpretation of a Field in the Niger Delta was done to determine the reservoir properties and volume of hydrocarbon contained within the sand interval at the depth investigated. Data used were well logs, seismic section and the structural map of the top of the sand. The Interactive Petrel Software was used in the Interpretation. Ut ilizing data fro m well logs, the reservoir bed boundaries, lithology with local knowledge, petrophysical parameters, hydrocarbon type (gas or oil) and geometry were determined. The seismic section and structure map revealed fault assisted closures at the center of the field, which correspond to the crest of rollover anticlines and which served as the trapping mediu m. The estimated volu me of hydrocarbon in place within the interval ranging fro m 3,909.06m (12,825ft) to 4,053.84m (13,300ft) was calculated as 289,227,007 bbl (37,281acre-ft) of o il. The study showed the feasibility of integrating borehole data and structural map in mapping reservoir fluid boundaries towards calculating the volu me of hydrocarbon in place.