海域天然气水合物地震勘查技术初探

The Study of Seismic Explorational Techniques for Marine Gas Hydrate

地震方法在海洋天然气水合物的调查及研究过程中发挥了关键作用。截至2002年底,全球范围内已发现的116处水合物矿点中,利用地球物理探测技术推测的就有近90处。本文在详细调研国内外天然气水合物调查研究的文献资料基础上,探讨了天然气水合物地震勘查技术方法,包括单道地震、常规多道地震、高分辨率多道地震。认为海域水合物勘探方法的选择主要根据具体的地质条件、勘探目标、经费等综合条件来确定。高分辨率多道地震勘探及其特殊地震资料相关处理是未来利用地球物理方法进行水合物勘探研究的主流发展方向。

Seismic technique has an important impact on the survey & research of marine gas hydrate. Up to end of 2002, there are approximate 90 gas hydrate spots that were found through geophysical technique in total 116. Based on the domestic and overseas data of gas hydrate which collected by the authors, the seismic techniques including single-channel, normal multi-channel and high-resolution multi-channel seismic were discussed in this paper. The conclusions were drew that the technique of gas hydrate exploration was determined by several factors including geological background, exploration target and the investment etc. High-resolution multi-channel seismic technique and its special processing will be the mainstream for the survey and research of the marine gas hydrate for the future.