- 责任者：Xu Mingcai (Institute of Geophysical and Geochemical Exploration ; CAGS ; Langfang 065000 ; China) ; Liu Jianxun
- 刊名：Geology and Prospecting
- 出版年：2012
- 卷期：48(6)
- 关键词：天然气水合物 ; gas hydrates ; 反射波法 ; reflection methods ; 青海 ; Qinghai Province
- 页码：p.1180-1187
- 图表：3 illus., 16 refs.
- 分类号：1600,1003
- issnNo：ISSN0495-5331
- isbnNo：CN11-2043/P
In 2008, object samples of natural gas hydrates were obtained for the first time by drilling in the permafrost region of the Qilian Mountains in China. In 2010, an experimental study of natural gas hydrates in the Mull region by the seismic reflection method was carried out. Comprehensive analyses and interpretation of the seismic, well log and geological data suggest that reflections formed by natural gas hydrates on seismic profiles are characterized by low velocity, low amplitude and high frequency. The distribution of natural gas hydrates is associated with fracture zones. On its forming mechanism, the gas moved up along the deep fault, was sealed and accumulated by the permafrost, and formed reservoirs in suitable temperature-pressure conditions.