POROSITY AND PERMEABILITY TREND STUDY OF THE KOLO CREEK, ONSHORE NIGER DELTA, USING WELL LOGS DATA
Abstract
This study aims to provide a comprehensive analysis of the reservoir characteristics of the kolo creek field in the Niger Delta. Focusing on three wells, the research utilizes a well log suite comprising gamma-ray, resistivity, caliper and density logs to investigate porosity and permeability trends across several zones. The well correlation study unveils stratigraphic continuity with varying thickness, hinting at the presence of faults. Results show a shale volume range from 3.2% - 7.5%, suggesting a significant fraction of clean sandstone. With about 20% formation porosity, the field demonstrates a notable capacity to accommodate hydrocarbon fluids. This study crucially determines lithology, depositional environments, shale volume, porosity (Φ), permeability (K), compaction trend, and hydrocarbon fluid saturation, all pivotal variables influencing reservoir quality. The gamma-ray log assists in determining well lithology, highlighting shale intervals through high kick signatures. Overall, the findings indicate high porosity, low shale volume, and high permeability across all reservoirs.
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