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现代地质 ›› 2008, Vol. 22 ›› Issue (3): 438-446.

• 地球物理学 • 上一篇    下一篇

天然气水合物成矿带的识别技术研究

沙志彬1,2,王宏斌2,杨木壮3,梁金强2,张光学2,刘学伟4,龚跃华2   

  1. 1中国地质大学 资源学院,湖北 武汉 430074;
    2广州海洋地质调查局,广东 广州 510760;
    3广州大学 地理科学学院,广东 广州 510006;
    4中国地质大学 地球物理与信息技术学院,北京 100083
  • 收稿日期:2008-02-22 修回日期:2008-05-04 出版日期:2008-03-20 发布日期:2008-03-20
  • 作者简介:沙志彬,男,高级工程师,1972年出生,石油与天然气地质专业,主要从事石油地质和天然气水合物的研究。
  • 基金资助:

    国家自然科学基金项目(40746028);国家高技术研究发展计划课题(2006AA09A202)

Study on Recognizing Technology of Gas Hydrates Zone

SHA Zhi-bin1,2,WANG Hong-bin2,YANG Mu-zhuang3,LIANG Jin-qiang2,ZHANG Guang-xue2,LIU Xue-wei4,GONG Yue-hua2   

  1. 1Faculty of Earth Resources,China University of Geosciences,Wuhan,Hubei 430074,China;
    2Guangzhou Marine Geological Survey, Guangzhou,Guangdong 510760,China;
    3School of Geographical Sciences,Guangzhou University, Guangzhou,Guangdong 510006, China;
    4School of Geophysics and Technology Information,China University of Geosciences,Beijing 100083,China
  • Received:2008-02-22 Revised:2008-05-04 Online:2008-03-20 Published:2008-03-20

摘要:

在天然气水合物的地震资料解释过程中,常规地震剖面上难以识别水合物成矿带的准确位置。通过多年的实践对比研究,认为波形、速度反演、速度模型、流体因子、瞬时振幅、相对极性和能量半衰时等各种地震剖面,能够较好地揭示水合物成矿带的地球物理异常特征。收集整理了一部分国内外对水合物成矿带的识别技术,并提出了在无井的情况下,如何利用波形、速度和各种地震属性剖面所提供的信息来确定水合物成矿带的一些新想法,以期对水合物资源量的评估能提供比较有价值的参考依据。

关键词: 天然气水合物, 成矿带, 识别技术

Abstract:

It is very difficult to distinguish gas hydrate zones from the normal profiles of stack or migration during interpretation of natural gas hydrates based on the seismic data,whereas the abnormal geophysical characteristic of gas hydrate zones can be shown preferably in the profiles of wavelet,inversions of velocity,model of velocity,fluid factor,inversions of wave impedance,instantaneous amplitude,apparent polarity and halftime energy.Some recognition technology of gas hydrate zones are collected from domestic and overseas,whilst some new ideas including the recognition of gas hydrate zones using the information of wavelet,velocity and other attributes,which can be applicable in the areas with no well,are put forward in this paper.The ideas and the methods mentioned in this paper might provide some valuable reference for the resource assessment of gas hydrates.

Key words: gas hydrate, gas hydrates zone, recognizing technology

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