Petrophysical Evaluation of Two Wells in Offshore Niger Delta, Nigeria
Keywords:
Niger Delta, Petrophysics, Hydrocarbon saturation, Water saturation, PetroleumAbstract
This study provides accurate behavior of petrophysical properties with depth for this formation by using Interactive Petrophysics software. The results of the analysis revealed the presence of different sand and shale units, from the analysis of the geological logs comprising gamma-ray and electrical resistivity, the Sonic, Density, Gamma, Neutron, Resistivity and Net Pay Zone value for the reservoirs. The total porosity in the reservoirs was found to range from 0.006 to 0.514, Bulk volume of water in the reservoirs is between 0.042-0.144, Volume of shale for the reservoirs is between 0.034-0.198, the water saturation ranges from 0.147 to 0.519 and the hydrocarbon saturation 0.481 to 0.853. Good well-to-well lithology correlation was established across the fields studied. It was found from this research that the bulk of the hydrocarbon encountered in the Niger Delta basin was found to be within a depth range of 2853.77-3413.76 m (9359.5-11200.5 ft), with net pay zone ranging from 16.91-32.00 m (55.5-105 ft). The hydrocarbon reservoirs in this study were found to be in the Agbada formation, which is in conformity with the geology of the Niger Delta, Nigeria.
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