Hydrocarbon Generation Potential of Chia Gara Formation in Three Selected Wells, Northern Iraq

Hydrocarbon Generation Potential of Chia Gara Formation in Three Selected Wells, Northern Iraq

In this study collected samples of Chia Gara Formation in Atrush, Shaikhan and Sarsang oilfields are used to geochemical characteristics of organic matter in this formation. This determination was based on Rock-Eval pyrolysis and Biomarker analyses. The Chia Gara Formation can be considered as good...

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Main Authors: Mamaseni Wrya J., Naqshabandi Srood F, Al-Jaboury Falah Kh.
Format: Article
Language:English
Published: De Gruyter 2019-03-01
Series:Open Geosciences
Subjects:
chia gara formation, anoxic condition, biomarker assemblage
type ii kerogen
mature organic matter
oil-prone
Online Access:https://doi.org/10.1515/geo-2019-0007
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spelling doaj-b685dc723b8f49229f5379f55a9f5a322021-09-05T20:50:49ZengDe GruyterOpen Geosciences2391-54472019-03-01111778810.1515/geo-2019-0007geo-2019-0007Hydrocarbon Generation Potential of Chia Gara Formation in Three Selected Wells, Northern IraqMamaseni Wrya J.0Naqshabandi Srood F1Al-Jaboury Falah Kh.2Department of Geology, College of Science, Salahaddin University, Erbil, IraqDepartment of Geology, College of Science, Salahaddin University, Erbil, IraqPetroleum Engineering Department, Knowledge Private University, Erbil, IraqIn this study collected samples of Chia Gara Formation in Atrush, Shaikhan and Sarsang oilfields are used to geochemical characteristics of organic matter in this formation. This determination was based on Rock-Eval pyrolysis and Biomarker analyses. The Chia Gara Formation can be considered as good to excellent source rock; it’s TOC content ranges from 1.14-8.5wt% with an average of 1.85%, 3.91%, and 6.94% in Atush-1, Mangesh-1 and Shaikhan-8 wells respectively. The samples of Chia Gara Formation contain kerogen type II. These properties are considered optimal for oil generation. The low oxygen index (OI) and pristane/phytane (Pr/Ph) ratios (Average 20.73, 0.61 respectively) and high hydrogen index (HI) (average 637.6) indicate that the formation was deposited under anoxic condition. According to regular sterane (C27%, C28%, C29%) and terpanes ratios (C29/C30, C31/C30 hopane), the formation was deposited in marine environment.https://doi.org/10.1515/geo-2019-0007chia gara formation, anoxic condition, biomarker assemblagetype ii kerogenmature organic matteroil-prone
collection DOAJ
language English
format Article
sources DOAJ
author Mamaseni Wrya J.
Naqshabandi Srood F
Al-Jaboury Falah Kh.
spellingShingle Mamaseni Wrya J.
Naqshabandi Srood F
Al-Jaboury Falah Kh.
Hydrocarbon Generation Potential of Chia Gara Formation in Three Selected Wells, Northern Iraq
Open Geosciences
chia gara formation, anoxic condition, biomarker assemblage
type ii kerogen
mature organic matter
oil-prone
author_facet Mamaseni Wrya J.
Naqshabandi Srood F
Al-Jaboury Falah Kh.
author_sort Mamaseni Wrya J.
title Hydrocarbon Generation Potential of Chia Gara Formation in Three Selected Wells, Northern Iraq
title_short Hydrocarbon Generation Potential of Chia Gara Formation in Three Selected Wells, Northern Iraq
title_full Hydrocarbon Generation Potential of Chia Gara Formation in Three Selected Wells, Northern Iraq
title_fullStr Hydrocarbon Generation Potential of Chia Gara Formation in Three Selected Wells, Northern Iraq
title_full_unstemmed Hydrocarbon Generation Potential of Chia Gara Formation in Three Selected Wells, Northern Iraq
title_sort hydrocarbon generation potential of chia gara formation in three selected wells, northern iraq
publisher De Gruyter
series Open Geosciences
issn 2391-5447
publishDate 2019-03-01
description In this study collected samples of Chia Gara Formation in Atrush, Shaikhan and Sarsang oilfields are used to geochemical characteristics of organic matter in this formation. This determination was based on Rock-Eval pyrolysis and Biomarker analyses. The Chia Gara Formation can be considered as good to excellent source rock; it’s TOC content ranges from 1.14-8.5wt% with an average of 1.85%, 3.91%, and 6.94% in Atush-1, Mangesh-1 and Shaikhan-8 wells respectively. The samples of Chia Gara Formation contain kerogen type II. These properties are considered optimal for oil generation. The low oxygen index (OI) and pristane/phytane (Pr/Ph) ratios (Average 20.73, 0.61 respectively) and high hydrogen index (HI) (average 637.6) indicate that the formation was deposited under anoxic condition. According to regular sterane (C27%, C28%, C29%) and terpanes ratios (C29/C30, C31/C30 hopane), the formation was deposited in marine environment.
topic chia gara formation, anoxic condition, biomarker assemblage
type ii kerogen
mature organic matter
oil-prone
url https://doi.org/10.1515/geo-2019-0007
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AT naqshabandisroodf hydrocarbongenerationpotentialofchiagaraformationinthreeselectedwellsnortherniraq
AT aljabouryfalahkh hydrocarbongenerationpotentialofchiagaraformationinthreeselectedwellsnortherniraq
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