Ogbamikhumi Alexander

This study presents an integrated approach to reservoir delineation and prospect identification in the Indraz Field, onshore Niger Delta, utilizing 3D seismic data and well logs. The primary objective was to construct a robust static reservoir model by synthesizing structural interpretation with quantitative petrophysical and seismic attribute analysis. The methodology encompassed a comprehensive workflow within the Schlumberger Petrel software environment, including seismic to-well tie, fault and horizon mapping, depth conversion, and the extraction of key amplitude-based attributes (RMS, Maximum, Average, and Mean Amplitude). Well log analysis identified a laterally continuous reservoir sand, with fluid diagnostics confirming hydrocarbon presence in specific wells. Structural interpretation revealed a complex system of listric growth faults forming a fault-bounded anticlinal closure. Crucially, the integration of depth structure maps with seismic attribute anomalies identified three distinct prospects (A, B, and C). The analysis demonstrates a classic case of hydrocarbon bypass, where the primary accumulation (Prospect A) is located at the structurally highest crest of the anticline, separate from the existing well control which encountered the marginal accumulations (Prospects B and C). The prospects were ranked based on the conformance of strong amplitude anomalies to structural closure, with Prospect A being the highest-priority target. This research concludes that the integrated application of seismic structural and attribute analysis is indispensable for accurate reservoir characterization and de-risking exploration targets in the structurally complex settings of the Niger Delta, providing a clear strategy for future field development