气候变化领域集成服务门户(CCPortal): Petroleum charge history in the Baiyun depression and Panyu lower uplift in the Pearl River Mouth Basin, northern South China Sea: Constraints from integration of organic geochemical and fluid inclusion data

CCPortal

DOI	10.1306/11151817369
	Petroleum charge history in the Baiyun depression and Panyu lower uplift in the Pearl River Mouth Basin, northern South China Sea: Constraints from integration of organic geochemical and fluid inclusion data
	Ping H.; Chen H.; Zhai P.; Zhu J.; George S.C.
发表日期	2019
ISSN	0149-1423
卷号	103 期号:6
英文摘要	The source, thermal maturity, and charge history of oil and gas condensate in the Baiyun depression and the Panyu lower uplift were determined using organic geochemical and fluid inclusion data. Nearly all the gas condensates and oil in the study area originated from Eocene Enping Formation source rocks, whereas the condensate fluids in the eastern area originated from the Enping and Zhuhai Formations. The condensate fluids have a relatively low thermal maturity with a calculated vitrinite reflectance equivalent that typically ranges from 0.8% to 1.0% based on the C29 sterane isomerization ratios and aromatic hydrocarbon maturity parameters. Four types of oil inclusions with various fluorescence colors (yellow–blue) and API gravities (25°–44°) were recognized in the Oligocene and lower Miocene reservoir units, which suggest multiple oil charging events. The homogenization temperatures of the fluid inclusions recorded the oil charge events accompanying large-scale hot fluid movement, which was most likely caused by the charging of high-temperature natural gas from the deeper Wenchang Formation. The trapping pressures of the oil inclusions and the reconstructed burial histories were used to determine the timing of oil charge. The main oil charge occurred from 16–7 Ma throughout the Baiyun depression and Panyu lower uplift, whereas the Panyu lower uplift experienced an additional oil charge from 5–0 Ma. The natural gas charge occurred during the main oil charging period and may continue to the present day. Multiple physical processes, such as gas injection (without gas exsolution), gas washing (with gas exsolution), and migration fractionation, have played important roles in gas condensate formation and controlling the petroleum distribution in the Baiyun depression and Panyu lower uplift. Copyright © 2019. The American Association of Petroleum Geologists. All rights reserved.
语种	英语
scopus关键词	Aromatic hydrocarbons; Exploratory geochemistry; Gases; Gasoline; Mineralogy; Natural gas; Petroleum geology; Condensate fluids; Fluid inclusion data; Homogenization temperatures; Maturity parameters; Northern South China Sea; Pearl River Mouth basin; Vitrinite reflectance; Zhuhai formations; Gas condensates; aromatic hydrocarbon; Eocene; Eocene-Oligocene boundary; fluid inclusion; gas condensate; hydrocarbon migration; hydrocarbon reservoir; liquefied natural gas; Miocene; natural gas; Oligocene; petroleum hydrocarbon; thermal maturity; vitrinite reflectance; Pacific Ocean; South China Sea; South China Sea; Zhujiangkou Basin
来源期刊	AAPG Bulletin
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/125080
作者单位	Key Laboratory of Tectonics and Petroleum Resources, China University of Geosciences, Ministry of Education, Wuhan, China; Shenzhen Branch of China National Offshore Oil Corporation Ltd, Shenzhen, China; Department of Earth and Planetary Sciences, MQMarine Research Centre, Macquarie University, Sydney, NSW, Australia
推荐引用方式 GB/T 7714	Ping H.,Chen H.,Zhai P.,et al. Petroleum charge history in the Baiyun depression and Panyu lower uplift in the Pearl River Mouth Basin, northern South China Sea: Constraints from integration of organic geochemical and fluid inclusion data[J],2019,103(6).
APA	Ping H.,Chen H.,Zhai P.,Zhu J.,&George S.C..(2019).Petroleum charge history in the Baiyun depression and Panyu lower uplift in the Pearl River Mouth Basin, northern South China Sea: Constraints from integration of organic geochemical and fluid inclusion data.AAPG Bulletin,103(6).
MLA	Ping H.,et al."Petroleum charge history in the Baiyun depression and Panyu lower uplift in the Pearl River Mouth Basin, northern South China Sea: Constraints from integration of organic geochemical and fluid inclusion data".AAPG Bulletin 103.6(2019).