EVALUATION OF THE IMPACT OF POROSITY IN ESTIMATING HYDROCARBON VOLUME: A CASE STUDY OF FIELD ‘AY’ IN THE NIGER DELTA, NIGERIA
Abstract
The accurate estimation of hydrocarbon volume is a critical step in reservoir evaluation and field development planning. This project evaluates the impact of porosity on hydrocarbon volume estimation in Field ‘AY’, Niger Delta, using data from three wells (AY01, AY02, and AY03). Petrophysical analysis shows that porosity varies significantly across the wells, directly influencing hydrocarbon saturation and reserve estimates. AY02 recorded the highest effective porosity, averaging 28–30%, with hydrocarbon saturation above 65%, making it the most promising reservoir interval. AY01 displayed moderate values, with porosity ranging from 22– 25% and hydrocarbon saturation around 55–60%, while AY03 showed relatively lower reservoir quality, with porosity averaging 20–22%. These variations underscore how porosity strongly controls hydrocarbon distribution and recoverable volumes. Overall, the study demonstrates that accurate porosity evaluation is critical for reliable volumetric estimates and development planning in the Niger Delta.
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