GEOCHEMISTRY OF POTENTIAL SOURCE ROCK AND NATURAL GAS SEEPAGES IN THE MANGOLE-TALIABU ARCHIPELAGO, NORTH MALUKU, INDONESIA

The Mangole-Taliabu Archipelago has great potential for natural gas exploration due to its many active natural gas seepages. The limited natural gas exploration activities initiated during the last three decades led to a lack of publications on source rock and natural gas geochemistry. Previous rese...

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Main Authors: Taufik Ramli, Iwan Sukma Gumilar, Ade Yogi, Ryan Akbar Fadhillah, Rakhmat Fakhruddin, Praptisih Praptisih
Format: Article
Language:English
Published: Faculty of Mining, Geology and Petroleum Engineering 2023-01-01
Series:Rudarsko-geološko-naftni Zbornik
Subjects:
Online Access:https://hrcak.srce.hr/file/447301
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author Taufik Ramli
Iwan Sukma Gumilar
Ade Yogi
Ryan Akbar Fadhillah
Rakhmat Fakhruddin
Praptisih Praptisih
author_facet Taufik Ramli
Iwan Sukma Gumilar
Ade Yogi
Ryan Akbar Fadhillah
Rakhmat Fakhruddin
Praptisih Praptisih
author_sort Taufik Ramli
collection DOAJ
description The Mangole-Taliabu Archipelago has great potential for natural gas exploration due to its many active natural gas seepages. The limited natural gas exploration activities initiated during the last three decades led to a lack of publications on source rock and natural gas geochemistry. Previous research has postulated that the potential source rocks in this area and its surroundings are the Buya and Salodik formations, and known active natural gas seepages are hypothesised to originate from humic organic matter (type-III kerogen). The research aims to review and re-discuss the geochemical characteristics of potential source rock, the origins and genetics of natural gas seepages, and the correlation between natural gas seepage and source rocks by integrating the existing data with the newly collected data. This research revealed that the potential source rock is the Bobong Formation, aside from the previously confirmed Buya Formation, while the Salodik Formation is not a potential source rock as was suggested in previous publications. The most significant research finding is the type of natural gas seepage which found not only coal-derived gas but also oil-type gas. The calculated Ro of the coal-derived gas source rock is 0.80% – 1.00% and that of oil-type gas source rock ranges between 0.50% – 1.31%. For gas–source rock correlation, the Bobong Formation appears to be the most likely source for RAG/88/012 and RAG/88/014 gas samples, while the Buya Formation is the source for Binono Seep, RA/21/33, RA/21/34, and RA/21/35 gas samples. The new research findings are hoped to have significant implications for increasing the understanding of the petroleum system and encouraging further exploration activities.
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spelling doaj.art-1c29d92782fa41c1b367473812fe42662024-04-15T19:03:19ZengFaculty of Mining, Geology and Petroleum EngineeringRudarsko-geološko-naftni Zbornik0353-45291849-04092023-01-013848510110.17794/rgn.2023.4.8GEOCHEMISTRY OF POTENTIAL SOURCE ROCK AND NATURAL GAS SEEPAGES IN THE MANGOLE-TALIABU ARCHIPELAGO, NORTH MALUKU, INDONESIATaufik Ramli0Iwan Sukma Gumilar1Ade Yogi2Ryan Akbar Fadhillah3Rakhmat Fakhruddin4Praptisih Praptisih5Research Center for Geological Resources, National Research and Innovation Agency, Jl. Cisitu, Sangkuriang Bandung, Jawa Barat 40135, IndonesiaCenter for Geological Survey, Geological Agency, Ministry of Energy and Mineral Resouces, Jl. Diponegoro No. 57, Bandung, West Java 40122, IndonesiaCenter for Geological Survey, Geological Agency, Ministry of Energy and Mineral Resouces, Jl. Diponegoro No. 57, Bandung, West Java 40122, IndonesiaCenter for Geological Survey, Geological Agency, Ministry of Energy and Mineral Resouces, Jl. Diponegoro No. 57, Bandung, West Java 40122, IndonesiaResearch Center for Geological Resources, National Research and Innovation Agency, Jl. Cisitu, Sangkuriang Bandung, Jawa Barat 40135, IndonesiaResearch Center for Geological Resources, National Research and Innovation Agency, Jl. Cisitu, Sangkuriang Bandung, Jawa Barat 40135, IndonesiaThe Mangole-Taliabu Archipelago has great potential for natural gas exploration due to its many active natural gas seepages. The limited natural gas exploration activities initiated during the last three decades led to a lack of publications on source rock and natural gas geochemistry. Previous research has postulated that the potential source rocks in this area and its surroundings are the Buya and Salodik formations, and known active natural gas seepages are hypothesised to originate from humic organic matter (type-III kerogen). The research aims to review and re-discuss the geochemical characteristics of potential source rock, the origins and genetics of natural gas seepages, and the correlation between natural gas seepage and source rocks by integrating the existing data with the newly collected data. This research revealed that the potential source rock is the Bobong Formation, aside from the previously confirmed Buya Formation, while the Salodik Formation is not a potential source rock as was suggested in previous publications. The most significant research finding is the type of natural gas seepage which found not only coal-derived gas but also oil-type gas. The calculated Ro of the coal-derived gas source rock is 0.80% – 1.00% and that of oil-type gas source rock ranges between 0.50% – 1.31%. For gas–source rock correlation, the Bobong Formation appears to be the most likely source for RAG/88/012 and RAG/88/014 gas samples, while the Buya Formation is the source for Binono Seep, RA/21/33, RA/21/34, and RA/21/35 gas samples. The new research findings are hoped to have significant implications for increasing the understanding of the petroleum system and encouraging further exploration activities.https://hrcak.srce.hr/file/447301source rocknatural gas seepageorganic geochemistrycarbon isotopeMangoleTaliabu
spellingShingle Taufik Ramli
Iwan Sukma Gumilar
Ade Yogi
Ryan Akbar Fadhillah
Rakhmat Fakhruddin
Praptisih Praptisih
GEOCHEMISTRY OF POTENTIAL SOURCE ROCK AND NATURAL GAS SEEPAGES IN THE MANGOLE-TALIABU ARCHIPELAGO, NORTH MALUKU, INDONESIA
Rudarsko-geološko-naftni Zbornik
source rock
natural gas seepage
organic geochemistry
carbon isotope
Mangole
Taliabu
title GEOCHEMISTRY OF POTENTIAL SOURCE ROCK AND NATURAL GAS SEEPAGES IN THE MANGOLE-TALIABU ARCHIPELAGO, NORTH MALUKU, INDONESIA
title_full GEOCHEMISTRY OF POTENTIAL SOURCE ROCK AND NATURAL GAS SEEPAGES IN THE MANGOLE-TALIABU ARCHIPELAGO, NORTH MALUKU, INDONESIA
title_fullStr GEOCHEMISTRY OF POTENTIAL SOURCE ROCK AND NATURAL GAS SEEPAGES IN THE MANGOLE-TALIABU ARCHIPELAGO, NORTH MALUKU, INDONESIA
title_full_unstemmed GEOCHEMISTRY OF POTENTIAL SOURCE ROCK AND NATURAL GAS SEEPAGES IN THE MANGOLE-TALIABU ARCHIPELAGO, NORTH MALUKU, INDONESIA
title_short GEOCHEMISTRY OF POTENTIAL SOURCE ROCK AND NATURAL GAS SEEPAGES IN THE MANGOLE-TALIABU ARCHIPELAGO, NORTH MALUKU, INDONESIA
title_sort geochemistry of potential source rock and natural gas seepages in the mangole taliabu archipelago north maluku indonesia
topic source rock
natural gas seepage
organic geochemistry
carbon isotope
Mangole
Taliabu
url https://hrcak.srce.hr/file/447301
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