| 南海北部天然气水合物研究进展 |
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| 引用本文： | 邓希光,吴庐山,付少英,吴能友.南海北部天然气水合物研究进展[J].海洋学研究,2008,26(2):67-74. |
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| 作者姓名： | 邓希光 吴庐山 付少英 吴能友 |
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| 作者单位： | 广州海洋地质调查局,广东,广州,510760 |
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| 基金项目： | 广东省自然科学基金
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中国地质调查局天然气水合物评价及勘探开发战略研究资助项目
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中国科学院广州地球化学研究所、南海海洋研究所边缘海地质重点实验室研究基金课题联合资助项目 |
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| 摘 要： | 天然气水合物是一种新型的储量巨大的绿色能源,是目前世界各国研究界的研究热点之一。我国以及美国、日本、印度、韩国等国家都采集到了天然气水合物的实物样品。虽然我国对天然气水合物的研究起步较晚,但近年来的研究已经取得了飞速的进步,而且也于2007年5月在南海北部陆坡的神狐海域成功采集到天然气水合物的实物样品,这是在南海海域首次获取天然气水合物实物样品,证实了南海北部蕴藏着丰富的天然气水合物资源,标志着我国天然气水合物调查研究水平又上了一个新的台阶。目前,南海北部陆坡已经作为我国天然气水合物未来开发的战略选区之一。在总结我国天然气水合物以往十几年研究工作的基础上,综述了我国天然气水合物近年来在南海北部的地质、地球物理、地球化学3个方面的研究进展,提出了未来天然气水合物勘探和研究的方向和建议。
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| 关 键 词： | 研究进展 天然气水合物 南海北部 |
The research advances of natural gas hydrates in northern South China Sea |
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| DENG Xi-guang,WU Lu-shan,FU Shao-ying,WU Neng-you.The research advances of natural gas hydrates in northern South China Sea[J].Journal of Marine Sciences,2008,26(2):67-74. |
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| Authors: | DENG Xi-guang WU Lu-shan FU Shao-ying WU Neng-you |
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| Abstract: | Natural gas hydrates are immense amounts of clean-burning potential energy,which is a white ice-like material that naturally occurs under very low temperatures and high-pressure conditions in the continental slope and rise areas and shallow sediments of deep oceans around the globe.They may contain twice as much carbon as all known natural gas,oil and coal deposits and constitute the single largest store of fixed carbon on the earth.1 m3 of gas hydrate typically contains 164 m3 of methane and 0.84 m3 of water at standard temperature and pressure.Furthermore,current estimates of the amount of gas in the world's marine and permafrost gas hydrate accumulations are in rough accord at about 20 000 trillion cubic meters.Many countries are enlarging their funds for gas hydrates and hope to exploit hydrate as possible as early.At present,the gas hydrate samples have been collected by USA,Japan,Indian and South Korean.In China,the research of hydrates was initiated further later till in the early 1990s,but enormous progresses have been made in geology,geophysics and geochemistry.China government has regarded continental slope of northern South China Sea as first area of drilling the natural gas hydrate.In May,2007,gas hydrate samples have been collected by China in Shenhu area of northern South China Sea.This is the first time in South China Sea,that confirm that there is abundant hydrate in northern South China Sea,and indicate that gas hydrate research of China has advanced in the world.Meanwhile,northern South China Sea will become a strategical area of gas hydrate exploitation.The paper is aimed at giving a brief overview on the investigations and research of hydrate in northern South China Sea in last decade,and the progresses on geology,geophysics and geochemistry of gas hydrate in recent have been summarized.In geological aspect,the geological condition of the region shows that the P-T condition,gas source condition and tectonic setting could provide suitable thermodynamic condition for the formation of gas hydrates in northern South China Sea,moreover,the landform and relief related with hydrate have been found during survey,and Seep carbonates have been found in several sites in northern South China Sea.According to geophysical evidences,typical bottom-simulating reflectors(BSR) have been identified in some areas of northern South China Sea,and other geophysical evidences have also been recognized,such as amplitude blanking zone,the P-wave velocity abnormality and polarity reversion of the waveform,etc.Furthermore.The geochemical characteristics of sediments and pore water of sediments in northern South China Sea are similar to the feature of sediments and pore water of sediments in typical hydrate-bearing area.All these evidences indicate that the huge resource of gas hydrates have been held under the seafloor in northern South China Sea.At last,exploited direction and suggestions future gas hydrate researches have been proposed in China. |
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| Keywords: | research advances natural gas hydrate northern South China Sea |
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