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Facies-based petroleum system of northern onshore Sarawak Basin

This work presents the facies-based petroleum system of the Tatau-Bintulu area in northern Sarawak, represented by the Belaga-Tatau-Nyalau formations. The Nyalau Formation exposures can be closely related to the offshore hydrocarbon-producing Balingian Province of Cycle I/II. Twelve facies associati...

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Main Author: Mustaffa, Siti Noor Ashikin
Format: Conference or Workshop Item
Published: 2021
Subjects:
GE Environmental Sciences
TN Mining engineering. Metallurgy
Online Access:http://eprints.um.edu.my/35702/
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85111010906&doi=10.3997%2f2214-4609.202171018&partnerID=40&md5=d38fdd13d838b5468aff4141bf0e81bc
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spelling my.um.eprints.357022023-10-31T03:24:51Z http://eprints.um.edu.my/35702/ Facies-based petroleum system of northern onshore Sarawak Basin Mustaffa, Siti Noor Ashikin GE Environmental Sciences TN Mining engineering. Metallurgy This work presents the facies-based petroleum system of the Tatau-Bintulu area in northern Sarawak, represented by the Belaga-Tatau-Nyalau formations. The Nyalau Formation exposures can be closely related to the offshore hydrocarbon-producing Balingian Province of Cycle I/II. Twelve facies associations are recognized from the formations, which form elements of larger-scale facies successions. The Belaga-Tatau-Nyalau formations are interpreted as mixed tide- and wave-influenced coastal to deep marine depositional system. The facies identified and the geological setting of the area are evaluated for potential elements in a petroleum system. Wave-dominated shoreface succession forms good reservoir-seal with shoreface sand overlain by muddy estuarine-bay. The fluvial channel forms good quality stacked reservoir enclosed by carbonaceous mud and coal bed, followed by the deposition of heterolithic-mud filled tidal channel sealed by muddy estuarine-bay, forming moderate-poor reservoir-seal potential. Tidal bar and mouth bar form broad amalgamated sand bodies with good horizontal and vertical flow properties, overlain either by muddy bay or prodelta mud. The distal turbidite sand forms moderate to poor reservoir with the interbedded basinal mud impeding the upward flow of hydrocarbon. As such, Belaga-Tatau-Nyalau formations possess a viable petroleum system depending on the facies that made up the geological element in a depositional environment. © EAGE Asia Pacific Virtual Geoscience Week 2021. All rights reserved. 2021 Conference or Workshop Item PeerReviewed Mustaffa, Siti Noor Ashikin (2021) Facies-based petroleum system of northern onshore Sarawak Basin. In: EAGE Asia Pacific Virtual Geoscience Week 2021, 19 - 23 April 2021, Virtual, Online. https://www.scopus.com/inward/record.uri?eid=2-s2.0-85111010906&doi=10.3997%2f2214-4609.202171018&partnerID=40&md5=d38fdd13d838b5468aff4141bf0e81bc
institution Universiti Malaya
building UM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaya
content_source UM Research Repository
url_provider http://eprints.um.edu.my/
topic GE Environmental Sciences
TN Mining engineering. Metallurgy
spellingShingle GE Environmental Sciences
TN Mining engineering. Metallurgy
Mustaffa, Siti Noor Ashikin
Facies-based petroleum system of northern onshore Sarawak Basin
description This work presents the facies-based petroleum system of the Tatau-Bintulu area in northern Sarawak, represented by the Belaga-Tatau-Nyalau formations. The Nyalau Formation exposures can be closely related to the offshore hydrocarbon-producing Balingian Province of Cycle I/II. Twelve facies associations are recognized from the formations, which form elements of larger-scale facies successions. The Belaga-Tatau-Nyalau formations are interpreted as mixed tide- and wave-influenced coastal to deep marine depositional system. The facies identified and the geological setting of the area are evaluated for potential elements in a petroleum system. Wave-dominated shoreface succession forms good reservoir-seal with shoreface sand overlain by muddy estuarine-bay. The fluvial channel forms good quality stacked reservoir enclosed by carbonaceous mud and coal bed, followed by the deposition of heterolithic-mud filled tidal channel sealed by muddy estuarine-bay, forming moderate-poor reservoir-seal potential. Tidal bar and mouth bar form broad amalgamated sand bodies with good horizontal and vertical flow properties, overlain either by muddy bay or prodelta mud. The distal turbidite sand forms moderate to poor reservoir with the interbedded basinal mud impeding the upward flow of hydrocarbon. As such, Belaga-Tatau-Nyalau formations possess a viable petroleum system depending on the facies that made up the geological element in a depositional environment. © EAGE Asia Pacific Virtual Geoscience Week 2021. All rights reserved.
format Conference or Workshop Item
author Mustaffa, Siti Noor Ashikin
author_facet Mustaffa, Siti Noor Ashikin
author_sort Mustaffa, Siti Noor Ashikin
title Facies-based petroleum system of northern onshore Sarawak Basin
title_short Facies-based petroleum system of northern onshore Sarawak Basin
title_full Facies-based petroleum system of northern onshore Sarawak Basin
title_fullStr Facies-based petroleum system of northern onshore Sarawak Basin
title_full_unstemmed Facies-based petroleum system of northern onshore Sarawak Basin
title_sort facies-based petroleum system of northern onshore sarawak basin
publishDate 2021
url http://eprints.um.edu.my/35702/
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85111010906&doi=10.3997%2f2214-4609.202171018&partnerID=40&md5=d38fdd13d838b5468aff4141bf0e81bc
_version_ 1781704699208007680
score 13.211869

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