Study on Recognizing Technology of Gas Hydrates Zone

详细信息   

• 责任者：Sha Zhibin (Faculty of Earth Resources ; China University of Geosciences ; Wuhan 430074 ; China) ; Wang Hongbin
• 刊名：Geoscience
• 出版年：2008
• 卷期：22(3)
• 关键词：天然气水合物 ; gas hydrates ; 地震勘探 ; seismic exploration
• 页码：p.438-446
• 图表：9 illus., 1 table, 19 refs.
• 分类号：1600
• issnNo：ISSN1000-8527
• isbnNo：CN11-2035/P

摘要

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 technologies 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 might provide some valuable reference for the resource assessment of gas hydrates.