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Gravity drainage mechanism in naturally fractured carbonate reservoirs; review and application

Gravity drainage is one of the essential recovery mechanisms in naturally fractured reservoirs. Several mathematical formulas have been proposed to simulate the drainage process using the dual-porosity model. Nevertheless, they were varied in their abilities to capture the real saturation profiles a...

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Main Authors: Aljuboori, F.A., Lee, J.H., Elraies, K.A., Stephen, K.D.
Format: Article
Published: MDPI AG 2019
Online Access:https://www.scopus.com/inward/record.uri?eid=2-s2.0-85072722110&doi=10.3390%2fen12193699&partnerID=40&md5=1e2328a20ec708a9a645c519b0952d3b
http://eprints.utp.edu.my/24931/
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spelling my.utp.eprints.249312021-08-27T08:26:04Z Gravity drainage mechanism in naturally fractured carbonate reservoirs; review and application Aljuboori, F.A. Lee, J.H. Elraies, K.A. Stephen, K.D. Gravity drainage is one of the essential recovery mechanisms in naturally fractured reservoirs. Several mathematical formulas have been proposed to simulate the drainage process using the dual-porosity model. Nevertheless, they were varied in their abilities to capture the real saturation profiles and recovery speed in the reservoir. Therefore, understanding each mathematical model can help in deciding the best gravity model that suits each reservoir case. Real field data from a naturally fractured carbonate reservoir from the Middle East have used to examine the performance of various gravity equations. The reservoir represents a gas�oil system and has four decades of production history, which provided the required mean to evaluate the performance of each gravity model. The simulation outcomes demonstrated remarkable differences in the oil and gas saturation profile and in the oil recovery speed from the matrix blocks, which attributed to a different definition of the flow potential in the vertical direction. Moreover, a sensitivity study showed that some matrix parameters such as block height and vertical permeability exhibited a different behavior and effectiveness in each gravity model, which highlighted the associated uncertainty to the possible range that often used in the simulation. These parameters should be modelled accurately to avoid overestimation of the oil recovery from the matrix blocks, recovery speed, and to capture the advanced gas front in the oil zone. ©2019 by the authors. MDPI AG 2019 Article NonPeerReviewed https://www.scopus.com/inward/record.uri?eid=2-s2.0-85072722110&doi=10.3390%2fen12193699&partnerID=40&md5=1e2328a20ec708a9a645c519b0952d3b Aljuboori, F.A. and Lee, J.H. and Elraies, K.A. and Stephen, K.D. (2019) Gravity drainage mechanism in naturally fractured carbonate reservoirs; review and application. Energies, 12 (19). http://eprints.utp.edu.my/24931/
institution Universiti Teknologi Petronas
building UTP Resource Centre
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Petronas
content_source UTP Institutional Repository
url_provider http://eprints.utp.edu.my/
description Gravity drainage is one of the essential recovery mechanisms in naturally fractured reservoirs. Several mathematical formulas have been proposed to simulate the drainage process using the dual-porosity model. Nevertheless, they were varied in their abilities to capture the real saturation profiles and recovery speed in the reservoir. Therefore, understanding each mathematical model can help in deciding the best gravity model that suits each reservoir case. Real field data from a naturally fractured carbonate reservoir from the Middle East have used to examine the performance of various gravity equations. The reservoir represents a gas�oil system and has four decades of production history, which provided the required mean to evaluate the performance of each gravity model. The simulation outcomes demonstrated remarkable differences in the oil and gas saturation profile and in the oil recovery speed from the matrix blocks, which attributed to a different definition of the flow potential in the vertical direction. Moreover, a sensitivity study showed that some matrix parameters such as block height and vertical permeability exhibited a different behavior and effectiveness in each gravity model, which highlighted the associated uncertainty to the possible range that often used in the simulation. These parameters should be modelled accurately to avoid overestimation of the oil recovery from the matrix blocks, recovery speed, and to capture the advanced gas front in the oil zone. ©2019 by the authors.
format Article
author Aljuboori, F.A.
Lee, J.H.
Elraies, K.A.
Stephen, K.D.
spellingShingle Aljuboori, F.A.
Lee, J.H.
Elraies, K.A.
Stephen, K.D.
Gravity drainage mechanism in naturally fractured carbonate reservoirs; review and application
author_facet Aljuboori, F.A.
Lee, J.H.
Elraies, K.A.
Stephen, K.D.
author_sort Aljuboori, F.A.
title Gravity drainage mechanism in naturally fractured carbonate reservoirs; review and application
title_short Gravity drainage mechanism in naturally fractured carbonate reservoirs; review and application
title_full Gravity drainage mechanism in naturally fractured carbonate reservoirs; review and application
title_fullStr Gravity drainage mechanism in naturally fractured carbonate reservoirs; review and application
title_full_unstemmed Gravity drainage mechanism in naturally fractured carbonate reservoirs; review and application
title_sort gravity drainage mechanism in naturally fractured carbonate reservoirs; review and application
publisher MDPI AG
publishDate 2019
url https://www.scopus.com/inward/record.uri?eid=2-s2.0-85072722110&doi=10.3390%2fen12193699&partnerID=40&md5=1e2328a20ec708a9a645c519b0952d3b
http://eprints.utp.edu.my/24931/
_version_ 1738656659533725696
score 13.211869

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