Integrated Petrophysical and Structural Analysis of the Agbada Formation, Offshore Imo State

The Agbada Formation constitutes the primary reservoir unit in many Niger Delta hydrocarbon accumulations, and detailed integrated analysis of its petrophysical and structural characteristics is essential for optimising field development decisions in offshore licences adjacent to Imo State. This study integrates petrophysical log analysis with three-dimensional seismic structural interpretation to characterise reservoir quality and trap geometry across two producing intervals in an offshore block. Seven well logs within the study area were processed for shale volume, effective porosity, and water saturation using established deterministic methods. Net pay determination applied porosity, shale volume, and water saturation cutoffs consistent with field operator conventions. Seismic structural mapping was conducted on workstation software, with key reservoir-top horizons picked on the three-dimensional volume and mapped at a two-way travel time scale. Depth conversion was performed using a time-to-depth relationship derived from checkshot surveys. Fault seal capacity was evaluated using shale gouge ratio calculated along the major bounding faults. Cross-sections integrating well and seismic data are presented to visualise structural trapping configurations and hydrocarbon column heights. Identified discrepancies between mapped structural relief and observed fluid contacts are discussed in terms of fault breach risk. Recommendations for infill drilling targets are made based on the integrated interpretation. Keywords: Agbada Formation, petrophysics, seismic interpretation, fault seal, Niger Delta.