Biostratigraphy, Depositional and Diagenetic Processes in Carbonate Rocks from Southern Lebanon: Impact on Porosity and Permeability
Abstract Carbonate rocks contain prolific hydrocarbon reserves all over the world, particularly in the Middle East. For exploration and production strategies, it is essential to understand carbonate reservoirs in terms of their internal characteristics, depositional environment, relative age, diagen...
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crwiley:10.1111/1755-6724.14695 2024-09-09T20:04:10+00:00 Biostratigraphy, Depositional and Diagenetic Processes in Carbonate Rocks from Southern Lebanon: Impact on Porosity and Permeability JANJUHAH, Hammad Tariq SANJUAN, Josep ALQUDAH, Mohammad SALAH, Mohamed K. 2021 http://dx.doi.org/10.1111/1755-6724.14695 https://onlinelibrary.wiley.com/doi/pdf/10.1111/1755-6724.14695 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/1755-6724.14695 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Acta Geologica Sinica - English Edition volume 95, issue 5, page 1668-1683 ISSN 1000-9515 1755-6724 journal-article 2021 crwiley https://doi.org/10.1111/1755-6724.14695 2024-08-13T04:16:25Z Abstract Carbonate rocks contain prolific hydrocarbon reserves all over the world, particularly in the Middle East. For exploration and production strategies, it is essential to understand carbonate reservoirs in terms of their internal characteristics, depositional environment, relative age, diagenetic processes and impact on petrophysical properties. This study has been performed on exposed Cretaceous, Paleocene and Miocene marine carbonate sedimentary sequences in two localities (Maghdoucheh and Qennarit) near the city of Sidon (Southern Lebanon). It represents the first comprehensive study that takes into consideration the carbonate reservoir facies, diagenetic history and reservoir quality in the area. Rocks at Maghdoucheh are mainly dominated by limestone beds showing sedimentary structures and erosive bases alternating with microfossil‐rich silty marls, related to a shallowing upward sequence in a restricted marine platform environment. Shells of benthic foraminifera and mollusks dominate the fossil assemblage extracted from the studied rocks. The microfossil and nannofossil assemblage detected in the Maghdoucheh sections indicates a middle Miocene age. Rocks at Qennarit are composed of mudstone/wackestone limestone beds rich in planktonic foraminifera and nannofossils related to open marine conditions. Based on the nannofossil content, rocks from Qennarit 1 and 2 are Paleocene and Cretaceous in age, respectively. Four main types of microfacies have been identified, i.e. (1) microbioclastic peloidal calcisiltite, (2) pelagic lime mudstone and wackestone with planktonic microfossils, (3) grainstone/packstone with abundant foraminifera and (4) fenestral bindstones, mudstones and packstones with porostromate microstructures. The porosity‐permeability (poroperm) analysis of representative samples reveals moderate to good porosity but very low permeability. This is mainly due to the presence of large moldic pores that are isolated in nature. The diagenetic features are dominated by micritization and ... Article in Journal/Newspaper Planktonic foraminifera Wiley Online Library Acta Geologica Sinica - English Edition 95 5 1668 1683 |
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Wiley Online Library |
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crwiley |
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English |
description |
Abstract Carbonate rocks contain prolific hydrocarbon reserves all over the world, particularly in the Middle East. For exploration and production strategies, it is essential to understand carbonate reservoirs in terms of their internal characteristics, depositional environment, relative age, diagenetic processes and impact on petrophysical properties. This study has been performed on exposed Cretaceous, Paleocene and Miocene marine carbonate sedimentary sequences in two localities (Maghdoucheh and Qennarit) near the city of Sidon (Southern Lebanon). It represents the first comprehensive study that takes into consideration the carbonate reservoir facies, diagenetic history and reservoir quality in the area. Rocks at Maghdoucheh are mainly dominated by limestone beds showing sedimentary structures and erosive bases alternating with microfossil‐rich silty marls, related to a shallowing upward sequence in a restricted marine platform environment. Shells of benthic foraminifera and mollusks dominate the fossil assemblage extracted from the studied rocks. The microfossil and nannofossil assemblage detected in the Maghdoucheh sections indicates a middle Miocene age. Rocks at Qennarit are composed of mudstone/wackestone limestone beds rich in planktonic foraminifera and nannofossils related to open marine conditions. Based on the nannofossil content, rocks from Qennarit 1 and 2 are Paleocene and Cretaceous in age, respectively. Four main types of microfacies have been identified, i.e. (1) microbioclastic peloidal calcisiltite, (2) pelagic lime mudstone and wackestone with planktonic microfossils, (3) grainstone/packstone with abundant foraminifera and (4) fenestral bindstones, mudstones and packstones with porostromate microstructures. The porosity‐permeability (poroperm) analysis of representative samples reveals moderate to good porosity but very low permeability. This is mainly due to the presence of large moldic pores that are isolated in nature. The diagenetic features are dominated by micritization and ... |
format |
Article in Journal/Newspaper |
author |
JANJUHAH, Hammad Tariq SANJUAN, Josep ALQUDAH, Mohammad SALAH, Mohamed K. |
spellingShingle |
JANJUHAH, Hammad Tariq SANJUAN, Josep ALQUDAH, Mohammad SALAH, Mohamed K. Biostratigraphy, Depositional and Diagenetic Processes in Carbonate Rocks from Southern Lebanon: Impact on Porosity and Permeability |
author_facet |
JANJUHAH, Hammad Tariq SANJUAN, Josep ALQUDAH, Mohammad SALAH, Mohamed K. |
author_sort |
JANJUHAH, Hammad Tariq |
title |
Biostratigraphy, Depositional and Diagenetic Processes in Carbonate Rocks from Southern Lebanon: Impact on Porosity and Permeability |
title_short |
Biostratigraphy, Depositional and Diagenetic Processes in Carbonate Rocks from Southern Lebanon: Impact on Porosity and Permeability |
title_full |
Biostratigraphy, Depositional and Diagenetic Processes in Carbonate Rocks from Southern Lebanon: Impact on Porosity and Permeability |
title_fullStr |
Biostratigraphy, Depositional and Diagenetic Processes in Carbonate Rocks from Southern Lebanon: Impact on Porosity and Permeability |
title_full_unstemmed |
Biostratigraphy, Depositional and Diagenetic Processes in Carbonate Rocks from Southern Lebanon: Impact on Porosity and Permeability |
title_sort |
biostratigraphy, depositional and diagenetic processes in carbonate rocks from southern lebanon: impact on porosity and permeability |
publisher |
Wiley |
publishDate |
2021 |
url |
http://dx.doi.org/10.1111/1755-6724.14695 https://onlinelibrary.wiley.com/doi/pdf/10.1111/1755-6724.14695 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/1755-6724.14695 |
genre |
Planktonic foraminifera |
genre_facet |
Planktonic foraminifera |
op_source |
Acta Geologica Sinica - English Edition volume 95, issue 5, page 1668-1683 ISSN 1000-9515 1755-6724 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/1755-6724.14695 |
container_title |
Acta Geologica Sinica - English Edition |
container_volume |
95 |
container_issue |
5 |
container_start_page |
1668 |
op_container_end_page |
1683 |
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1809936249544245248 |