Estimation of Permeability from Laser Particle Size Analysis: A Case Study of Selected Wells Offshore Niger Delta
- September 18, 2020
- Posted by: RSIS Team
- Categories: Agriculture, IJRIAS
International Journal of Research and Innovation in Applied Science (IJRIAS) | Volume V, Issue III, January 2020 | ISSN 2454–6186
Chinenye O.Mbonu1 and Nnamdi J.Ajah1,2
1Center for Petroleum Geosciences, University of Port Harcourt, Nigeria
2Federal University of Technology, Owerri, Nigeria
Abstract— Within the first few years of production, most producing companies experience poor reservoir performance largely because of inadequate reservoir properties description and one of these misrepresented properties is Permeability. The Permeability of the Deep offshore Niger Delta was estimated by analyzing thirty-five (35) samples from four wells; Well A, Well B, Well C and Well D. The samples were put in a Microtrac S3000 Laser Particle Size Analysis (LPSA) machine and core plugs were put in the Permeameter for Permeability estimation. The analyzed sample results were compared with the existing permeability models of the area. The wells were observed to have very good permeability ranging from 700mD to 5500mD. Comparing the results from the different methods of Permeability estimation, the Laser Particle Size Analysis machine was found to be the most precise given its inherent unbiased algorithms which neutralize any form of regional heterogeneity. Krumbein and Monk’s, and Van Baaren’s models correlates closely with measured permeability while Berg’s proved inaccurate for prediction of permeability in this region. Reservoir Engineers and Petrophysicists interested in Offshore Niger Delta would find this work effective for more accurate permeability estimation.
Key words— Permeability, Grain size, Niger Delta, Model, LPSA
