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Influence of Hysteresis on Relative Permeability of Immiscible Water- Alternating-Gas (WAG) Injection of Real Reservoir

The purpose of this project is to study the influence of hysteresis on the relative permeability with the emphasis on immiscible water-alternating-gas (WAG) injection. This analysis is focused on the use of simulation software which is ECLIPSE Black Oil Reservoir Simulator where the input or data...

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Main Author: Iman bt Mohd Kamal, Iman
Format: Final Year Project
Language:English
Published: Universiti Teknologi Petronas 2009
Subjects:
TP Chemical technology
Online Access:http://utpedia.utp.edu.my/536/1/iman_bt_mohd_kamal.pdf
http://utpedia.utp.edu.my/536/
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spelling my-utp-utpedia.5362017-01-25T09:44:22Z http://utpedia.utp.edu.my/536/ Influence of Hysteresis on Relative Permeability of Immiscible Water- Alternating-Gas (WAG) Injection of Real Reservoir Iman bt Mohd Kamal, Iman TP Chemical technology The purpose of this project is to study the influence of hysteresis on the relative permeability with the emphasis on immiscible water-alternating-gas (WAG) injection. This analysis is focused on the use of simulation software which is ECLIPSE Black Oil Reservoir Simulator where the input or data is obtained from the Angsi Field reservoir. Before studying the hysteresis effect, some sensitivity studies on WAG parameters are conducted to find the optimum values. These parameters include water/gas injection rate, WAG cycle period as well as WAG ratio. From the sensitivity studies, it is found that the optimum value for water/gas injection rate is 13000 (stb/day and Mscf/day) meanwhile the optimum WAG cycle period is found to be 6 months. Although high gas injection rate is preferable prior to water flooding, however low gas injection rate is more desirable since it requires less facilities for the WAG process. Therefore 1: 1 ratio is the best ratio for the WAG process. After all optimum values of the WAG parameters have been determined, then the hysteresis will be considered in the simulation. Here, the results between the hysteretic and non-hysteretic models will be compared in order to prove the theory in the conceptual study which is done by previous researches is valid or not. Based on the results, it is found that the hysteretic model gives higher recovery factor compared to nonhysteretic model (base case) as much as 7.3%. Although the increment is not really significant, it should be reminded that the simulation only considers a portion of the whole Angsi reservoir. If the whole reservoir is considered, definitely the increment will be higher. Therefore, it is proved that by considering hysteresis in WAG simulation, the oil recovery is higher compared to non-hysteretic model and thus the conceptual study done is valid Universiti Teknologi Petronas 2009 Final Year Project NonPeerReviewed application/pdf en http://utpedia.utp.edu.my/536/1/iman_bt_mohd_kamal.pdf Iman bt Mohd Kamal, Iman (2009) Influence of Hysteresis on Relative Permeability of Immiscible Water- Alternating-Gas (WAG) Injection of Real Reservoir. Universiti Teknologi Petronas, Sri Iskandar,Tronoh,Perak. (Unpublished)
institution Universiti Teknologi Petronas
building UTP Resource Centre
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Petronas
content_source UTP Electronic and Digitized Intellectual Asset
url_provider http://utpedia.utp.edu.my/
language English
topic TP Chemical technology
spellingShingle TP Chemical technology
Iman bt Mohd Kamal, Iman
Influence of Hysteresis on Relative Permeability of Immiscible Water- Alternating-Gas (WAG) Injection of Real Reservoir
description The purpose of this project is to study the influence of hysteresis on the relative permeability with the emphasis on immiscible water-alternating-gas (WAG) injection. This analysis is focused on the use of simulation software which is ECLIPSE Black Oil Reservoir Simulator where the input or data is obtained from the Angsi Field reservoir. Before studying the hysteresis effect, some sensitivity studies on WAG parameters are conducted to find the optimum values. These parameters include water/gas injection rate, WAG cycle period as well as WAG ratio. From the sensitivity studies, it is found that the optimum value for water/gas injection rate is 13000 (stb/day and Mscf/day) meanwhile the optimum WAG cycle period is found to be 6 months. Although high gas injection rate is preferable prior to water flooding, however low gas injection rate is more desirable since it requires less facilities for the WAG process. Therefore 1: 1 ratio is the best ratio for the WAG process. After all optimum values of the WAG parameters have been determined, then the hysteresis will be considered in the simulation. Here, the results between the hysteretic and non-hysteretic models will be compared in order to prove the theory in the conceptual study which is done by previous researches is valid or not. Based on the results, it is found that the hysteretic model gives higher recovery factor compared to nonhysteretic model (base case) as much as 7.3%. Although the increment is not really significant, it should be reminded that the simulation only considers a portion of the whole Angsi reservoir. If the whole reservoir is considered, definitely the increment will be higher. Therefore, it is proved that by considering hysteresis in WAG simulation, the oil recovery is higher compared to non-hysteretic model and thus the conceptual study done is valid
format Final Year Project
author Iman bt Mohd Kamal, Iman
author_facet Iman bt Mohd Kamal, Iman
author_sort Iman bt Mohd Kamal, Iman
title Influence of Hysteresis on Relative Permeability of Immiscible Water- Alternating-Gas (WAG) Injection of Real Reservoir
title_short Influence of Hysteresis on Relative Permeability of Immiscible Water- Alternating-Gas (WAG) Injection of Real Reservoir
title_full Influence of Hysteresis on Relative Permeability of Immiscible Water- Alternating-Gas (WAG) Injection of Real Reservoir
title_fullStr Influence of Hysteresis on Relative Permeability of Immiscible Water- Alternating-Gas (WAG) Injection of Real Reservoir
title_full_unstemmed Influence of Hysteresis on Relative Permeability of Immiscible Water- Alternating-Gas (WAG) Injection of Real Reservoir
title_sort influence of hysteresis on relative permeability of immiscible water- alternating-gas (wag) injection of real reservoir
publisher Universiti Teknologi Petronas
publishDate 2009
url http://utpedia.utp.edu.my/536/1/iman_bt_mohd_kamal.pdf
http://utpedia.utp.edu.my/536/
_version_ 1739830671517417472
score 13.211869

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