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Comparison of different-type heat flows at typical sites in natural gas hydrate exploration area on the northern slope of the South China Sea
Xu, X; Li, YM; Luo, XH; Shi, XB; Yang, XQ; gz_xuxing@163.com; liyamin05@hotmail.com
2012
发表期刊CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
ISSN0001-5733
卷号55期号:3页码:998-1006
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.
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
关键词NorThern Slope Of The South China Sea Baiyun Sag Heat Flow Measurement Bsr Natural Gas Hydrate
学科领域Geochemistry & Geophysics
语种中文
资助项目海洋地质
WOS记录号WOS:000302332300030
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.scsio.ac.cn/handle/344004/10349
专题中科院边缘海地质重点实验室
通讯作者gz_xuxing@163.com; liyamin05@hotmail.com
推荐引用方式
GB/T 7714
Xu, X,Li, YM,Luo, XH,et al. Comparison of different-type heat flows at typical sites in natural gas hydrate exploration area on the northern slope of the South China Sea[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2012,55(3):998-1006.
APA Xu, X.,Li, YM.,Luo, XH.,Shi, XB.,Yang, XQ.,...&liyamin05@hotmail.com.(2012).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,55(3),998-1006.
MLA Xu, X,et al."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 55.3(2012):998-1006.
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