| 西沙海槽研究区天然气水合物地球化学勘探 |
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| 引用本文： | 孙春岩,王宏语,牛滨华,黄新武.西沙海槽研究区天然气水合物地球化学勘探[J].地球科学,2004,29(2):135-140. |
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| 作者姓名： | 孙春岩 王宏语 牛滨华 黄新武 |
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| 作者单位： | 中国地质大学工程技术学院, 北京 100083 |
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| 基金项目： | 国家“8 63”计划项目 (2 0 0 1AA6110 2 0 )，“973”计划 (G2 0 0 0 0 4670 5 )课题 |
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| 摘 要： | 天然气水合物研究涵盖了地球物理、地球化学和地质等多门学科, 其中勘查地球化学方法技术可以从海底介质中获得与天然气水合物有关的痕量地球化学信息, 圈定水合物异常区域.依据2000年和2001年在中国南海西沙海槽工作区天然气水合物地球化学现场快速勘查实测和室内分析测试的多种烃类结果, 获得了海上工作区气态烃地球化学异常分布, 以及与该区水合物地震BSR和BZ的对比分析评价结果.同时根据现场实测同位素数据, 探讨了工作区形成水合物气态烃甲烷的成因.研究成果为工作区天然气水合物勘探提供了地球化学方面的直接证据.
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| 关 键 词： | 天然气水合物 似海底反射 地球化学勘探 西沙海槽 有利远景区 |
| 文章编号： | 1000-2383(2004)02-0135-06 |
| 收稿时间： | 2003-10-20 |
Geochemical Prospecting of Gas Hydrate at Xisha Ocean Trough |
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| SUN Chun-yan,WANG Hong-yu,NIU Bin-hua,HUANG Xin-wu School of Engineering and Technology,China University of Geosciences,Beijing ,China.Geochemical Prospecting of Gas Hydrate at Xisha Ocean Trough[J].Earth Science-Journal of China University of Geosciences,2004,29(2):135-140. |
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| Authors: | SUN Chun-yan WANG Hong-yu NIU Bin-hua HUANG Xin-wu School of Engineering and Technology China University of Geosciences Beijing China |
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| Institution: | SUN Chun-yan,WANG Hong-yu,NIU Bin-hua,HUANG Xin-wu School of Engineering and Technology,China University of Geosciences,Beijing 100083,China |
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| Abstract: | Researches of gas hydrate involve cross-disciplinary data from geophysics, geochemistry and geology. Geochemical technologies can be used to collect the trace amount geochemical data about gas hydrate from seafloor media which will indicate the abnormal region. The original data was collected in the marine science investigation about gas hydrate in 2000 and 2001. After further indoor analysis and testing of multiple hydrocarbons, the abnormal region of marine gas hydrate was indicated, and the evaluation results were also derived from comparative analysis of seismic BSR and BZ about gas hydrate. With the on-site isotope data, the resulting cause about gas hydrate methane was discussed. These achievements will provide direct geochemical evidences for the exploration of gas hydrate at Xisha ocean trough. |
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| Keywords: | gas hydrate BSR(bottom simulated reflector) geochemical prospecting Xisha ocean trough favorable prospecting area |
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