HYDROCARBON RESERVOIR EVALUATION OF WABI IN PLACE OF X FIELD, NIGER DELTA USING SEISMIC AND PETROPHYSICAL DATA

This study presents an integrated hydrocarbon reservoir evaluation of the Wabi reservoir in X Field, located within the prolific Niger Delta, using seismic and petrophysical data. The objective of the research was to delineate reservoir geometry, determine reservoir properties, and assess hydrocarbon potential for effective field development planning. Seismic interpretation involved structural mapping, fault analysis, and horizon identification to define trapping mechanisms and reservoir configuration. The results revealed prominent growth faults and rollover anticlines characteristic of the Niger Delta depositional system. Time and depth structure maps generated from the seismic dataset indicated well-defined closures capable of trapping hydrocarbons. Amplitude anomalies observed along key reflectors further suggested the presence of hydrocarbon accumulations within sandstone units. Petrophysical evaluation was conducted using well logs, including gamma ray, resistivity, density, and neutron logs. Clean sandstone reservoirs were identified based on low gamma ray values, while high resistivity readings indicated hydrocarbon-bearing intervals. Porosity values derived from density-neutron crossplots showed moderate to good effective porosity, reflecting adequate storage capacity. Water saturation was estimated using Archie’s equation, with results indicating relatively low water saturation in productive zones. Net pay thickness and net-to-gross ratios were within commercially viable ranges. The integration of seismic structural analysis with quantitative petrophysical interpretation reduced subsurface uncertainty and enhanced reservoir characterization. The findings confirm that the Wabi reservoir possesses favorable reservoir quality, structural integrity, and hydrocarbon saturation suitable for commercial exploitation. This study demonstrates the effectiveness of combining seismic and well log data in evaluating complex deltaic reservoirs and provides valuable insights for reservoir management and development strategies in the Niger Delta.