Petro physics And Petroleum Evaluation of Wells Nat-05 and Nat-06, Agbada Formation, Niger Delta, Nigeria

Abstract

This study is on the evaluation of petrophysical parameters of the reservoir sand bodies and their transmissivity using well logs of six well, Niger Delta. These parameters have been used to determine the reservoirs potential and quality prevalent in the study area. The petrophysical parameters of the reservoir A ranges from 32-22%, 5024-116.2md, 20-14% and 86-80% for porosity (), permeability, water saturation (S_w) and hydrocarbon saturation (S_h). Its transmissivity ranges from 50,952mdft-648,148mdft. The petrophysical parameters of the reservoir B ranges 30-18%, 1997.8 – 166.5md, 30-14% and 86-70% for porosity (), permeability, water saturation (S_w) and hydrocarbon saturation (S_h) respectively. Its transmissivity ranges from 14,935-87,806mdft. The petrophysical parameters of the reservoir C ranges from 14-17%, 79.9-22.4md, 20-19% and 81-80% for porosity, permeability water saturation (S_w) and hydrocarbon saturation (S_h) respectively. Based on Schlumberger standard, the values indicate that reservoir A has both excellent porosity and permeability with highest transmissivity. Both porosity and permeability in reservoir B are very good while it transmissivity is lower than reservoir A. Reservoir C has fair porosity and moderate permeability, but has least transmissivity. The reservoirs bulk volume water (BVW) values calculated are close to constant resulted that the reservoirs are homogenous and at irreducible water saturation.