干旱区生态环境知识资源中心(Arid): Kinetics of oil generation from brackish-lacustrine source rocks in the southern Bohai Sea, East China

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DOI	10.1016/j.orggeochem.2019.103945
	Kinetics of oil generation from brackish-lacustrine source rocks in the southern Bohai Sea, East China
	Liang, Haoran 1,2; Xu, Fanghao 1; Grice, Kliti 2; Xu, Guosheng 1; Holman, Alex 2; Hopper, Peter 2; Fu, Deliang 3; Yu, Qing 1; Liang, Jiaju 1; Wang, Deying 4
通讯作者	Xu, Fanghao
来源期刊	ORGANIC GEOCHEMISTRY
ISSN	0146-6380
EISSN	1873-5290
出版年	2020
卷号	139
英文摘要	Oil generation (C14+ hydrocarbons) of three Type II kerogen samples isolated from brackish-lacustrine mudstones from Palaeogene strata (Ed(3), Es-1, Es-3) in the southern Bohai Sea was simulated by closed-system gold tube experiments. In addition, a series of complementary analyses (Rock-Eval pyrolysis, total organic carbon, vitrinite reflectance, trace element, X-ray diffraction and flash pyrolysis-gas chromatography-mass spectrometry) were also performed to identify the bulk geochemistry, palaeo-environment and chemical composition of the kerogen. The aim of this study was to achieve a better understanding of the kinetics of oil generation from lacustrine source rocks in the southern Bohai Sea. The results show that the three samples are Type II source rocks deposited in similar palaeo-environments (hot and arid climates, anoxic conditions, and brackish water in shallow to semi-deep lakes) with consequent similarity in the chemical compositions of their kerogens. The organic matter inputs are predominantly composed of lacustrine microalgae, with a relatively small contribution from land plants. The activation energies of oil generation from these samples show a range of 44-52 kcal/mol, with a frequency factor varying from 1.116 x 10(14) to 1.274 x 10(14) s(-1). Due to the similar palaeo-environments and chemical composition, samples in this study exhibit strong consistencies in kinetic parameters. Transformation ratio (TR) evolution curves of oil generation from the three samples, calculated under a linear heating rate (3 K/Ma), exhibit a slight difference, which varies within 4 degrees C at a given TR. Due to the great similarities of the three kinetic models, an average kinetic model for the Type II brackish-lacustrine source rocks in the southern Bohai Sea was established. This model integrates the characteristics of the three kinetic models and is still dominated by activation energy of 52 kcal/mol. The geological temperature of the oil generation phase for the average model in the southern Bohai Sea is from 92 to 137 degrees C. (C) 2019 Elsevier Ltd. All rights reserved.
英文关键词	Activation energy activation energy Type II kerogen Palaeo-environment Kerogen composition C14+ fraction Bohai Bay Basin
类型	Article
语种	英语
国家	Peoples R China ; Australia
收录类别	SCI-E
WOS记录号	WOS:000507334600007
WOS关键词	ARTIFICIAL MATURATION SERIES ; SECONDARY GAS GENERATION ; HYDROCARBON GENERATION ; PETROLEUM FORMATION ; BOTRYOCOCCUS-BRAUNII ; THERMAL-CRACKING ; MOLECULAR-STRUCTURE ; SHAHEJIE FORMATION ; FLASH PYROLYSIS ; ORGANIC-MATTER
WOS类目	Geochemistry & Geophysics
WOS研究方向	Geochemistry & Geophysics
EI主题词	2020-01-01
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/312235
作者单位	1.Chengdu Univ Technol, State Key Lab Oil & Gas Reservoir Geol & Exploita, Chengdu 610059, Sichuan, Peoples R China; 2.Curtin Univ, Western Australia Organ & Isotope Geochem Ctr, Sch Earth & Planetary Sci, Inst Geosci Res, GPO Box U1987, Perth, WA 6845, Australia; 3.Minist Land & Resources, Key Lab Coal Explorat & Comprehens Utilizat, Xian 710000, Peoples R China; 4.CNOOC, Tianjin Branch, Bohai Oilfield Res Inst, Tianjin 300459, Peoples R China
推荐引用方式 GB/T 7714	Liang, Haoran,Xu, Fanghao,Grice, Kliti,et al. Kinetics of oil generation from brackish-lacustrine source rocks in the southern Bohai Sea, East China[J],2020,139.
APA	Liang, Haoran.,Xu, Fanghao.,Grice, Kliti.,Xu, Guosheng.,Holman, Alex.,...&Wang, Deying.(2020).Kinetics of oil generation from brackish-lacustrine source rocks in the southern Bohai Sea, East China.ORGANIC GEOCHEMISTRY,139.
MLA	Liang, Haoran,et al."Kinetics of oil generation from brackish-lacustrine source rocks in the southern Bohai Sea, East China".ORGANIC GEOCHEMISTRY 139(2020).