Methane hydrate growth velocity in seepage system of Qiongdongnan Basin, South China Sea

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	Methane hydrate growth velocity in seepage system of Qiongdongnan Basin, South China Sea
其他题名	南海琼东南盆地渗漏系统甲烷水合物生长速度.pdf
	Guan Jin-An1,2 ; Fan Shuan-Shi 3; Liang De-Qing1 ; Ning Fu-Long 4
	2009-03-01
发表期刊	CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
ISSN	0001-5733
卷号	52 期号:3 页码:765-775
通讯作者	guanja@ms.giec.ac.cn ; fanss@ms.giec.ac.cn
摘要	The occurrences of diapirs, gas-filled zones and gas plumes in seawater in Qiongdongnan Basin of South China Sea indicate that there may exist seepage system gas-hydrate reservoirs. Assuming there has a methane venting zone of 1500 m in diameter, and the methane flux is 1000 kmol/a, and the temperature of methane hydrate-bearing sediments ranges from 3 degrees C to 20 degrees C, then according to the hydrate film growth theory, by numerical simulation, this paper computes the temperatures and velocities in 0 mbsf, 100 mbsf, 200 mbsf, 425 mbsf over discrete length, and gives the change charts. The results show that the cementation velocity in sediments matrix of methane hydrate is about 0.2 nm/s, and the seepage system will evolve into diffusion system over probably 35000 years. Meanwhile, the methane hydrate growth velocity in leakage system is 20 similar to 40 times faster than in diffusion system.
文章类型	Article
其他摘要	The occurrences of diapirs, gas-filled zones and gas plumes in seawater in Qiongdongnan Basin of South China Sea indicate that there may exist seepage system gas-hydrate reservoirs. Assuming there has a methane venting zone of 1500 m in diameter, and the methane flux is 1000 kmol/a, and the temperature of methane hydrate-bearing sediments ranges from 3 degrees C to 20 degrees C, then according to the hydrate film growth theory, by numerical simulation, this paper computes the temperatures and velocities in 0 mbsf, 100 mbsf, 200 mbsf, 425 mbsf over discrete length, and gives the change charts. The results show that the cementation velocity in sediments matrix of methane hydrate is about 0.2 nm/s, and the seepage system will evolve into diffusion system over probably 35000 years. Meanwhile, the methane hydrate growth velocity in leakage system is 20 similar to 40 times faster than in diffusion system.
关键词	Seepage System Diffusion System Methane Hydrate Growth Velocity Cementation Velocity
WOS标题词	Science & Technology ; Physical Sciences
研究领域[WOS]	Geochemistry & Geophysics
关键词[WOS]	GAS HYDRATE ; STABILITY ZONE ; FILM GROWTH ; BUBBLES ; WATER ; OREGON ; MARGIN ; RIDGE
收录类别	SCI
语种	英语
项目资助者	国家自然科学基金与广东省政府基金广东联合基金项目(NSFC-U0733003);国家重点基础研究专项973项目(2009CB219504);中国科学院知识创新重要方向性项目(KZCX3一SW一224)
WOS类目	Geochemistry & Geophysics
WOS记录号	WOS:000265004300020
引用统计	被引频次：5[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.giec.ac.cn/handle/344007/3356
专题	中国科学院广州能源研究所
作者单位	1.Chinese Acad Sci, Key Lab Renewable Energy & Gas Hydrate, Guangzhou Inst Energy Convers, Guangzhou 510640, Peoples R China 2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China 3.S China Univ Technol, MOE, Key Lab Enhanced Heat Transfer & Energy Conservat, Guangzhou 510640, Peoples R China 4.China Univ Geosci, Fac Engn, Wuhan 430074, Peoples R China
推荐引用方式 GB/T 7714	Guan Jin-An,Fan Shuan-Shi,Liang De-Qing,et al. Methane hydrate growth velocity in seepage system of Qiongdongnan Basin, South China Sea[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2009,52(3):765-775.
APA	Guan Jin-An,Fan Shuan-Shi,Liang De-Qing,&Ning Fu-Long.(2009).Methane hydrate growth velocity in seepage system of Qiongdongnan Basin, South China Sea.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,52(3),765-775.
MLA	Guan Jin-An,et al."Methane hydrate growth velocity in seepage system of Qiongdongnan Basin, South China Sea".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 52.3(2009):765-775.

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