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海底高频地震仪在南海北部天然气水合物探测中的应用 被引量:6

THE APPLICATION OF OCEAN BOTTOM SEISMOMETER TO GAS HYDRATE EXPLORATION ON THE NORTHERN MARGIN OF SOUTH CHINA SEA
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摘要 天然气水合物是石油天然气的理想替代能源,是当前能源、环境领域的研究热点。我国2007年神狐海域水合物钻探表明,天然气水合物的空间分布不均,水合物矿体内部物性差异较大。为了研究海域水合物及游离气的矿层结构,准确评估研究区天然气水合物资源量,采用三维地震与海底高频地震(HF-OBS)联合采集技术,获取水合物矿区的多波地震反射数据。充分利用纵横波速度信息,刻画研究区天然气水合物矿体的外形与内部结构,分析含天然气水合物沉积层的沉积环境与沉积物类型关系,进而获得这一海域天然气水合物分布规律的综合地质认识。 Gas hydrates are nowadays considered as a kind of potential energy resources and ideal substitution for fossil fuel,which are one of the most popular interests in the fields of worldwide energy and environment.The results of drilling and coring in the Shenhu Area in 2007 suggested that spatial distribution of gas hydrate bearing sediments is heterogeneous and the geophysical properties vary within wide limits.For the precise resources evaluation of the gas hydrate in the study area,multi-components seismic reflecting data was acquired by integrated exploration of 3Dseismic and OBS.With the helpful velocity information of P-waves and S-waves obtained from 3Dseismic and OBS data,the frames and configurations of gas hydrate reservoirs are identified,which contributed much to the comprehensive analysis of the relation between sedimentary environment and types of the gas hydrate bearing sediments as well as the study of the gas hydrate distribution pattern over the study area.
出处 《海洋地质与第四纪地质》 CAS CSCD 北大核心 2015年第1期185-192,共8页 Marine Geology & Quaternary Geology
基金 国际科技合作项目(2010DFA21630-2) 国家自然科学基金项目(41474119)
关键词 天然气水合物 海底地震仪 滑坡 碎屑沉积 南海北部 northern margin of South China Sea gas hydrates ocean bottom seismometer slide debris flow deposit
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二级参考文献28

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