Present-day geothermal field and thermal history of the Zhanhuadong Block, Jiyang depression

	Present-day geothermal field and thermal history of the Zhanhuadong Block, Jiyang depression
	Cheng, BH ; Xu, L ; Xiang, XY ; Mu, X
刊名	CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
	2001-03-01
卷号	44 期号:2 页码:238-244
关键词	Jiyang depression geothermal field heat flow thermal history
ISSN号	0001-5733
文献子类	Article
英文摘要	Present-day geothermal field in the Zhanhuadong Block,Jiyang depression,is analyzed based on available borehole temperature data. The thermal history is reconstructed using tectonothermal modeling costrained by vitrinite reflectance(R-O)data. The results indicate that (1) The average present geothermal gradient is 35.8 degrees /km, showing a decreasing trend with depth;higher geothermal gradient more than 37 degreesC/km in Gudao and Kendong area is observed. (2) The heat flow evolution is associated with multi-episodic rifting processes. The Palaeo-heat flow reached the maximum of about 83.6 mW/m(2) in the early Paleocene corresponding to the major rifting stage, and then cooled down with pulsant variation corresponding to minor rifting to the present-day regional average heat flow 63mW/m(2). (3) Since the main oil bearing layers experienced long term slowly heating process under a reasonable burial depth,they are still in the 'oil-generating window' with a wide depth range. The geothermal evolution in the Zhanhuadong Block is good for oil generation. The reconstructed thermal history results support the viewpoint that Bohai Bay is a rift basin and is of practical significance to the oil exploration in the studied area.
WOS关键词	EVOLUTION
WOS研究方向	Geochemistry & Geophysics
语种	英语
出版者	SCIENCE PRESS
WOS记录号	WOS:000167723000011
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/76931]
专题	中国科学院地质与地球物理研究所
通讯作者	Cheng, BH
作者单位	1.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China 2.Inst Geol, Shengli Oilfield, Dongying 257015, Peoples R China
推荐引用方式 GB/T 7714	Cheng, BH,Xu, L,Xiang, XY,et al. Present-day geothermal field and thermal history of the Zhanhuadong Block, Jiyang depression[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2001,44(2):238-244.
APA	Cheng, BH,Xu, L,Xiang, XY,&Mu, X.(2001).Present-day geothermal field and thermal history of the Zhanhuadong Block, Jiyang depression.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,44(2),238-244.
MLA	Cheng, BH,et al."Present-day geothermal field and thermal history of the Zhanhuadong Block, Jiyang depression".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 44.2(2001):238-244.