Oil charging history and pathways of the Ordovician carbonate reservoir in the Tuoputai region, Tarim Basin, NW China

Abstract Geochemical analysis of 64 oils sampled from an Ordovician carbonate reservoir in the Tuoputai region was undertaken to study the composition of molecular markers. All the oils have similar geochemical characteristics and belong to a single oil family. They are presumed to derive from the s...

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Autores principales:	Rong-Hui Fang, Mei-Jun Li, Hai-Tao Lü, T. -G. Wang, Yuan Yuan, Yong-Li Liu, Zhi-Yong Ni
Formato:	article
Lenguaje:	EN
Publicado:	KeAi Communications Co., Ltd. 2017
Materias:	Oil population Oil charging events Fluid inclusion 1D numerical modeling Oil filling pathway Science Q Petrology QE420-499
Acceso en línea:	https://doaj.org/article/03aa01615ec74501a101b99ce42baede
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spelling	oai:doaj.org-article:03aa01615ec74501a101b99ce42baede2021-12-02T06:08:52ZOil charging history and pathways of the Ordovician carbonate reservoir in the Tuoputai region, Tarim Basin, NW China10.1007/s12182-017-0196-81672-51071995-8226https://doaj.org/article/03aa01615ec74501a101b99ce42baede2017-11-01T00:00:00Zhttp://link.springer.com/article/10.1007/s12182-017-0196-8https://doaj.org/toc/1672-5107https://doaj.org/toc/1995-8226Abstract Geochemical analysis of 64 oils sampled from an Ordovician carbonate reservoir in the Tuoputai region was undertaken to study the composition of molecular markers. All the oils have similar geochemical characteristics and belong to a single oil family. They are presumed to derive from the same source kitchen and have similar oil charging history. A histogram of homogenization temperatures (T h) of aqueous inclusions in reservoir rocks shows a bimodal distribution pattern, indicating that the Ordovician reservoir has been charged twice. Coupling the measured T h (°C) with the burial and geothermal histories reconstructed using 1D basin modeling, we relate the homogenization temperature to the relevant geological ages: i.e., 425–412 and 9–4 Ma, corresponding to the Middle to Late Silurian and the Miocene to Pliocene, respectively. The oil filling orientation and pathways are traced using molecular indicators related to alkyldibenzothiophenes and benzo[b]naphthothiophenes. The oil charging orientation is from south to north generally. It can be predicted that the Ordovician reservoirs were sourced from a kitchen located to the south of the Tuoputai region, most probably between the Awati and Manjiaer Depressions. Traps located in the southern side of the Tuoputai region, along the oil charging pathways, should therefore be preferred oil exploration targets.Rong-Hui FangMei-Jun LiHai-Tao LüT. -G. WangYuan YuanYong-Li LiuZhi-Yong NiKeAi Communications Co., Ltd.articleOil populationOil charging eventsFluid inclusion1D numerical modelingOil filling pathwayScienceQPetrologyQE420-499ENPetroleum Science, Vol 14, Iss 4, Pp 662-675 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Oil population Oil charging events Fluid inclusion 1D numerical modeling Oil filling pathway Science Q Petrology QE420-499
spellingShingle	Oil population Oil charging events Fluid inclusion 1D numerical modeling Oil filling pathway Science Q Petrology QE420-499 Rong-Hui Fang Mei-Jun Li Hai-Tao Lü T. -G. Wang Yuan Yuan Yong-Li Liu Zhi-Yong Ni Oil charging history and pathways of the Ordovician carbonate reservoir in the Tuoputai region, Tarim Basin, NW China
description	Abstract Geochemical analysis of 64 oils sampled from an Ordovician carbonate reservoir in the Tuoputai region was undertaken to study the composition of molecular markers. All the oils have similar geochemical characteristics and belong to a single oil family. They are presumed to derive from the same source kitchen and have similar oil charging history. A histogram of homogenization temperatures (T h) of aqueous inclusions in reservoir rocks shows a bimodal distribution pattern, indicating that the Ordovician reservoir has been charged twice. Coupling the measured T h (°C) with the burial and geothermal histories reconstructed using 1D basin modeling, we relate the homogenization temperature to the relevant geological ages: i.e., 425–412 and 9–4 Ma, corresponding to the Middle to Late Silurian and the Miocene to Pliocene, respectively. The oil filling orientation and pathways are traced using molecular indicators related to alkyldibenzothiophenes and benzo[b]naphthothiophenes. The oil charging orientation is from south to north generally. It can be predicted that the Ordovician reservoirs were sourced from a kitchen located to the south of the Tuoputai region, most probably between the Awati and Manjiaer Depressions. Traps located in the southern side of the Tuoputai region, along the oil charging pathways, should therefore be preferred oil exploration targets.
format	article
author	Rong-Hui Fang Mei-Jun Li Hai-Tao Lü T. -G. Wang Yuan Yuan Yong-Li Liu Zhi-Yong Ni
author_facet	Rong-Hui Fang Mei-Jun Li Hai-Tao Lü T. -G. Wang Yuan Yuan Yong-Li Liu Zhi-Yong Ni
author_sort	Rong-Hui Fang
title	Oil charging history and pathways of the Ordovician carbonate reservoir in the Tuoputai region, Tarim Basin, NW China
title_short	Oil charging history and pathways of the Ordovician carbonate reservoir in the Tuoputai region, Tarim Basin, NW China
title_full	Oil charging history and pathways of the Ordovician carbonate reservoir in the Tuoputai region, Tarim Basin, NW China
title_fullStr	Oil charging history and pathways of the Ordovician carbonate reservoir in the Tuoputai region, Tarim Basin, NW China
title_full_unstemmed	Oil charging history and pathways of the Ordovician carbonate reservoir in the Tuoputai region, Tarim Basin, NW China
title_sort	oil charging history and pathways of the ordovician carbonate reservoir in the tuoputai region, tarim basin, nw china
publisher	KeAi Communications Co., Ltd.
publishDate	2017
url	https://doaj.org/article/03aa01615ec74501a101b99ce42baede
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Oil charging history and pathways of the Ordovician carbonate reservoir in the Tuoputai region, Tarim Basin, NW China

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