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Estimation of the permeability of hydrocarbon reservoir samples using induced polarization and nuclear magnetic resonance methods

Fatemeh Razavirad, Myriam Schmutz and Andrew Binley
Estimation of the permeability of hydrocarbon reservoir samples using induced polarization and nuclear magnetic resonance methods
Geophysics (March 2019) 84 (2): MR73-MR84

Abstract

We have evaluated several published models using induced polarization (IP) and nuclear magnetic resonance (NMR) measurements for the estimation of permeability of hydrocarbon reservoir samples. IP and NMR measurements were made on 30 samples (clean sands and sandstones) from a Persian Gulf hydrocarbon reservoir. We assessed the applicability of a mechanistic IP-permeability model and an empirical IP-permeability model recently proposed. The mechanistic model results in a broader range of permeability estimates than those measured for sand samples, whereas the empirical model tends to overestimate the permeability of the samples that we tested. We also evaluated an NMR permeability prediction model that is based on porosity phi and the mean of the log transverse relaxation time (T (sub 2ml) ). This model provides reasonable permeability estimations for the clean sandstones that we tested but relies on calibrated parameters. We also examined an IP-NMR permeability model, which is based on the peak of the transverse relaxation time distribution, T (sub 2p) and the formation factor. This model consistently underestimates the permeability of the samples tested. We also evaluated a new model. This model estimates the permeability using the arithmetic mean of log transverse NMR relaxation time (T (sub 2ml) ) and diffusion coefficient of the pore fluid. Using this model, we improved estimates of permeability for sandstones and sand samples. This permeability model may offer a practical solution for geophysically derived estimates of permeability in the field, although testing on a larger database of clean granular materials is needed.


ISSN: 0016-8033
EISSN: 1942-2156
Coden: GPYSA7
Serial Title: Geophysics
Serial Volume: 84
Serial Issue: 2
Title: Estimation of the permeability of hydrocarbon reservoir samples using induced polarization and nuclear magnetic resonance methods
Affiliation: Yazd University, Department of Mining and Metallurgical Engineering, Yazd, Iran
Pages: MR73-MR84
Published: 201903
Text Language: English
Publisher: Society of Exploration Geophysicists, Tulsa, OK, United States
References: 77
Accession Number: 2019-048329
Categories: Applied geophysicsEconomic geology, geology of energy sources
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. 2 tables
N24°00'00" - N31°00'00", E48°00'00" - E57°00'00"
N25°00'00" - N39°30'00", E44°00'00" - E63°19'60"
Secondary Affiliation: Universite Bordeaux Montaigne, FRA, FranceLancaster University, GBR, United Kingdom
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2019, American Geosciences Institute. Reference includes data supplied by Society of Exploration Geophysicists, Tulsa, OK, United States
Update Code: 2019
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