Improvement of Water Saturation and Formation Factor Parameters in a Clastic Reservoir, Zagros Basin, SW Iran

Water saturation (Sw) is one of the most important petro-physical parameter for evaluating the clastic horizons of hydrocarbon reservoir, which can be calculated using Archie's equation. The Archie's parameters (m, a) are the major source of uncertainty in the calculation of Sw. In order t...

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Main Authors: Bahman Soleimani, Mohamad Hassani Giv
Format: Article
Language:English
Published: University of Tehran 2016-06-01
Series:Journal of Chemical and Petroleum Engineering
Subjects:
Online Access:https://jchpe.ut.ac.ir/article_57837.html
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author Bahman Soleimani
Mohamad Hassani Giv
author_facet Bahman Soleimani
Mohamad Hassani Giv
author_sort Bahman Soleimani
collection DOAJ
description Water saturation (Sw) is one of the most important petro-physical parameter for evaluating the clastic horizons of hydrocarbon reservoir, which can be calculated using Archie's equation. The Archie's parameters (m, a) are the major source of uncertainty in the calculation of Sw. In order to obtain Archie's parameters, a total number of 117 sandstone samples, having resistivity measurements from Asmari Formation were studied. Due to scattered data points on the Log-Log plot of F versus Ø and to obtain reliable values for m and a parameters, the data were classified based on current zone indicator (CZI) into 6 classes of electrical flow unit (EFU). The values of parameters m and a obtained from F-Ø cross plots with excellent correlation coefficient. To avoid from data diversity and to make data applicable, the average values of m and a were obtained with considering the number of samples in each class. To assess the validation of the calculated F based on proposed values of m and a, the measured values of F versus calculated one's using Archie, Tixier and Humble formulas and proposed values were compared. The plot shows that the calculated F using Archie Tixier and Humble formulas are lower than calculated F using proposed and measured values. Applying the determined values seems to reasonably minimize the error in calculating F and therefore Sw%.
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spelling doaj.art-47d8bbb777a748b38c4f63e1e7cb0aa52022-12-22T01:17:46ZengUniversity of TehranJournal of Chemical and Petroleum Engineering2423-673X2423-67212016-06-015011810.22059/JCHPE.2016.57837Improvement of Water Saturation and Formation Factor Parameters in a Clastic Reservoir, Zagros Basin, SW IranBahman Soleimani0Mohamad Hassani Giv1Shahid Chamran University, AhvazPhD student of Shahid Chamran University, AhvazWater saturation (Sw) is one of the most important petro-physical parameter for evaluating the clastic horizons of hydrocarbon reservoir, which can be calculated using Archie's equation. The Archie's parameters (m, a) are the major source of uncertainty in the calculation of Sw. In order to obtain Archie's parameters, a total number of 117 sandstone samples, having resistivity measurements from Asmari Formation were studied. Due to scattered data points on the Log-Log plot of F versus Ø and to obtain reliable values for m and a parameters, the data were classified based on current zone indicator (CZI) into 6 classes of electrical flow unit (EFU). The values of parameters m and a obtained from F-Ø cross plots with excellent correlation coefficient. To avoid from data diversity and to make data applicable, the average values of m and a were obtained with considering the number of samples in each class. To assess the validation of the calculated F based on proposed values of m and a, the measured values of F versus calculated one's using Archie, Tixier and Humble formulas and proposed values were compared. The plot shows that the calculated F using Archie Tixier and Humble formulas are lower than calculated F using proposed and measured values. Applying the determined values seems to reasonably minimize the error in calculating F and therefore Sw%.https://jchpe.ut.ac.ir/article_57837.htmlFormation factorclastic horizonswater saturationcore analyzeZagros basin
spellingShingle Bahman Soleimani
Mohamad Hassani Giv
Improvement of Water Saturation and Formation Factor Parameters in a Clastic Reservoir, Zagros Basin, SW Iran
Journal of Chemical and Petroleum Engineering
Formation factor
clastic horizons
water saturation
core analyze
Zagros basin
title Improvement of Water Saturation and Formation Factor Parameters in a Clastic Reservoir, Zagros Basin, SW Iran
title_full Improvement of Water Saturation and Formation Factor Parameters in a Clastic Reservoir, Zagros Basin, SW Iran
title_fullStr Improvement of Water Saturation and Formation Factor Parameters in a Clastic Reservoir, Zagros Basin, SW Iran
title_full_unstemmed Improvement of Water Saturation and Formation Factor Parameters in a Clastic Reservoir, Zagros Basin, SW Iran
title_short Improvement of Water Saturation and Formation Factor Parameters in a Clastic Reservoir, Zagros Basin, SW Iran
title_sort improvement of water saturation and formation factor parameters in a clastic reservoir zagros basin sw iran
topic Formation factor
clastic horizons
water saturation
core analyze
Zagros basin
url https://jchpe.ut.ac.ir/article_57837.html
work_keys_str_mv AT bahmansoleimani improvementofwatersaturationandformationfactorparametersinaclasticreservoirzagrosbasinswiran
AT mohamadhassanigiv improvementofwatersaturationandformationfactorparametersinaclasticreservoirzagrosbasinswiran