HYDROCARBON RESERVOIR CHARACTERIZATION USING WELL LOG IN PART OF NIGER DELTA, NIGERIA

Abstract

Hydrocarbon reservoir characterization using well log in part of Niger Delta, Nigeria was done in order to examine the potentiality and productivity of the reservoir. A suite of well log data consisting of gamma ray, density, resistivity and neutron logs obtained from two wells within the area of study were used for this research. Gamma ray log was used for lithology identification and differentiation, resistivity log was used to identify the type of fluid present in the reservoir, density log was used to detect gas bearing zones in the reservoir while neutron log was used to distinguish gas from oil in sandstone and shale reservoirs. The results of this study showed sand bodies were delineated and correlated across the wells and were inferred as potential hydrocarbon reservoirs. The result also showed that there is an increase in both porosity and permeability, evaluated petrophysical parameters showed that porosity values range between 0.0391 – 0.3019, water saturation values range from 0.1660 – 1.6740 while hydrocarbon saturation values range from 0.0013 – 0.7296 and net to gross values range from 0.5332 – 0.9674.