Oil-oil correlation of the South Sumatra Basin reservoirs

Kasim, Sani Ado; Armstrong, J

doi:10.5897/jpge2013.0162

J. Petroleum Gas Eng.

2015

DOI: 10.5897/jpge2013.0162

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Oil-oil correlation of the South Sumatra Basin reservoirs

Sani Ado Kasim¹,

J Armstrong²

Abstract: The research sets about describing the different oil types in the South Sumatra Basin and relating the hydrocarbon to source rocks. Four different groups of oil have been identified; the character of the oils suggests both lacustrine and terrestrial input to the source rocks. Type 1 oils have marine/lacustrine influenced (low pristane/phytane), Type 2 are terrestrially derived (high pristane/phytane ratio), Type 3 are also lacustrine (oils with bimodal distribution of n-alkanes) and Type 4 are biodegraded oils… Show more

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Cited by 5 publications

References 8 publications

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Integrated Geological and Geophysical Approach to Reservoir Modeling: Case Study of Jambi Sub-basin, Sumatra, Indonesia

Haris

2020

Journal of the Geological Society of India

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Integrated geological and geophysical investigations were successfully performed for reservoir modeling in an oil field in the Jambi Province sub-basin, Sumatra, Indonesia. The objective of this study is to characterize the oil reservoir in terms of its petrophysical properties using a facies model that is based on an integrated geological and geophysical approach. The reservoir target of this study is located in the Air Benakat Formation, which is identified with a thickness of 3 to 20 m and is deposited in a depth range of 1300–1500 m. The reservoir modeling of Air Benakat Formation is carried out to open a new discovery for this field, since the comprehensive reservoir modeling has not been intensively performed. Structurally, the reservoir is segmented into three compartments by four main faults, and stratigraphic investigations revealed three prospect layers. In the present framework of the depositional environment, assessments of well log data included formation evaluations, well log data correlations and sequence stratigraphy, were performed to produce high-resolution features of vertical and lateral distributions. In addition, seismic data were interpreted to guide the structural model, and to effectively construct a three-dimensional (3D) geological framework of reservoir properties. The modeled reservoir shows that the reservoir is primarily considered a transition zone to a shallow marine deposit, which is specifically located in a submarine fan channel with a plain/moderately steep angle of its sedimentation base. Depositional environments are generally characterized by the potential paleocurrent direction within the channel axis from NE to SW, with respective agreement from larger scale porosity and net/gross models.

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Integrated Geological and Geophysical Approach to Reservoir Modeling: Case Study of Jambi Sub-basin, Sumatra, Indonesia

Haris

2020

Journal of the Geological Society of India

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Methane sorption behaviour of coals altered by igneous intrusion, South Sumatra Basin

Guo

Fink

Littke

et al. 2019

International Journal of Coal Geology

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Bio-markers based oil to source rock correlation and paleo-environmental interpretation: A case study from Talang Akar Formation, South Sumatra Basin, Indonesia

Syamsuddin

Jamaluddin

María

et al. 2019

J. Phys.: Conf. Ser.

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Talang Akar Formation is a proven hydrocarbon source rock in South Sumatra basin. This study used 3 crude oil sample and 6 well-cutting obtained from Talang Akar Formation. Biomarkers analysis has been used to determine the depositional environment of Talang Akar Formation. The techniques utilized include gas chromatography (GC) and gas chromatography-mass spectrometry (GC-MS) analysis of normal alkanes, isoprenoids, triterpene, and steranes. The most commonly used, pristine (Pr) to phytane (Ph) ratio is a good indicator of the depositional environment. The results in this research show that Pr/Ph ratios range from 5.90-10.08. Pr/Ph indicating abundant terrigenous plant input deposited under oxic to suboxic conditions. The oil/source rock correlation analysis using biomarker data shows that the oils field is correlated with the oils in source rock of Talang Akar Formation. This study concludes that the source rock in Talang Akar Formation was deposited in a transitional (Fluvio-deltaic) to marginal marine environment under oxic conditions.

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Oil-oil correlation of the South Sumatra Basin reservoirs

Cited by 5 publications

References 8 publications

Integrated Geological and Geophysical Approach to Reservoir Modeling: Case Study of Jambi Sub-basin, Sumatra, Indonesia

Integrated Geological and Geophysical Approach to Reservoir Modeling: Case Study of Jambi Sub-basin, Sumatra, Indonesia

Methane sorption behaviour of coals altered by igneous intrusion, South Sumatra Basin

Bio-markers based oil to source rock correlation and paleo-environmental interpretation: A case study from Talang Akar Formation, South Sumatra Basin, Indonesia

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