【摘要】 极地永冻区与海洋是两种完全不同的自然环境,因而两种环境中天然气水合物成藏模式必然有本质的差异。成藏模式不同,水合物形成方式不同,决定着勘探思维和方法也不同。从两种不同环境中天然气水合物形成模式的基本条件出发,讨论了海洋环境和永冻区天然气水合物形成模式的差异。分析认为,极地永冻区天然气水合物的主要成藏模式是深部热解甲烷模式,而海洋环境天然气水合物的形成除了有生物甲烷气模式以外,热解甲烷气模式也是其成藏的重要模式之一。更多还原

【Abstract】 The natural environment in arctic permafrost region and marine environment were completely different,therefore the reservoir formation patterns of gas hydrate in these two environments should be essentially different.Because of different reservoir forming patterns and different hydrate forming modes,therefore the thinkings and methods for looking for it were different.Based on the formation patterns and basic conditions in two different environments,the differences between the patterns of gas hydrate formation in two different environments were discussed.It is considered by analysis that deep pyrolysis methane gas is the main formation pattern in permafrost region,and the bio-methane gas is the main formation in marine environment,while pyrolysis methane gas is also holding an important position.更多还原