Enhancement of Reservoir Characterization with Petrophysical Analysis of Well Log Data in the “Abig” Oil Field, Niger Delta, Nigeria

Abstract

The petrophysical evaluation may clear up several foremost demanding situations faced with the hydrocarbon reservoirs’ characterization. Such trouble is the capacity to apprehend the capacity of a reservoir. Petrophysical parameters associated with the porosity, quantity of shale, and permeability have been implemented to infer the greatness of an awesome reservoir. Therefore, this work aims to measure important petrophysical parameters to define the reservoir's characteristics, and correlation between porosity, and permeability, where bulk density properties can reveal important factors in the reservoir's operation. In this study, three different wells were examined in Niger Deltas area of Nigeria, to determine the characteristics of the reservoir, through petro-physical measurements of bulk density, porosity, permeability, and irreducible water saturation. This study shows correlations demonstrating that the two reservoirs could be identified, mapped, and correlated across all wells in the field and exhibited strong continuity. Reservoir J1 penetrated to depths of (8776-8808) feet, (8254-8356) feet, and (8934-8996) feet in wells Abig-003, Abig-004, and Abig-005 respectively. While for J2, the reservoir penetrated to depths of (8911-8928) feet, (8611-8669) feet, and (9249-9276) feet in wells Abig-003, Abig-004, and Abig-005 respectively. The mean porosity of the reservoirs is 19% and is considered great with 61% water saturation and 39% hydrocarbon with a 1223md permeability which is considered to be exceptionally great. For the most part, from the assessment of the Abig oil field based on petrophysical properties which has its hydrocarbon water contact at 8298 feet, it can be generally considered good and viable for hydrocarbon generation.