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学科主题: Geochemistry & Geophysics
题名: Comparison of different-type heat flows at typical sites in natural gas hydrate exploration area on the northern slope of the South China Sea
作者: Xu, X ; Li, YM ; Luo, XH ; Shi, XB ; Yang, XQ
通讯作者: gz_xuxing@163.com ; liyamin05@hotmail.com
关键词: Northern slope of the South China Sea ; Baiyun sag ; Heat flow measurement ; BSR ; Natural gas hydrate
刊名: CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
发表日期: 2012
卷: 55, 期:3, 页:998-1006
部门归属: [Xu Xing; Luo Xian-Hu] Guangzhou Marine Geol Survey, Guangzhou 510760, Guangdong, Peoples R China; [Li Ya-Min; Shi Xiao-Bin; Yang Xiao-Qiu] Chinese Acad Sci, S China Sea Inst Oceanol, Key Lab Marginal Sea Geol, Guangzhou 510301, Guangdong, Peoples R China
项目归属: 海洋地质
摘要: In the natural gas hydrate exploration on the northern slope of the South China Sea, three types of heat flow data were derived from drilling measurement, probe measurement, and BSR measurement. To investigate the differences of different seafloor heat flow measurement methods and the characteristics of natural gas hydrate exploration area on the northern slope of the South China Sea, the paper takes SH-2 and SH-5, the two wells for natural gas hydrate exploration, as the typical sites to describe the three heat flow measurement methods and compare the results at the two sites. The following results were gotten. First, the probe-type heat flow is almost identical with drilling-type heat flow at Site SH-2, but is lower obviously at Site SH-5; BSR-type heat flows calculated with actual average heat-conductivity are almost identical with drilling-type heat flows at both Site SH-2 and Site SH-5. Second, the obviously lower probe-type heat flow than drilling-type heat flow at Site SH-5 might be caused by liquid activities, as indicated by analysis of the characteristics of seismic profile and heat flow of neighboring sites. Third, the Site SH-5 has higher geothermal gradient and heat flow than Site SH-2, which may be an important reason of failure to get hydrate at Site SH-5. Furthermore, it may be the late-stage diapir that brought higher temperature and decomposed the former hydrate at Site SH-5.
语种: 中文
WOS记录号: WOS:000302332300030
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.scsio.ac.cn/handle/344004/10349
Appears in Collections:中科院边缘海地质重点实验室_期刊论文

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Recommended Citation:
Xu, X; Li, YM; Luo, XH; Shi, XB; Yang, XQ.Comparison of different-type heat flows at typical sites in natural gas hydrate exploration area on the northern slope of the South China Sea,CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2012,55(3):998-1006
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