【摘要】 文章主要从页岩气成藏机理、成藏条件、储集条件和富集规律、盖层及保存条件论述页岩气成藏特征。页岩气藏具有典型煤层气、典型根缘气和典型常规圈闭气成藏的多重机理意义,在表现特征上具有典型的过渡意义;页岩气成藏受多种因素综合影响,包括沉积环境、总有机碳含量、干酪根类型和热演化程度等。页岩的埋深和厚度、孔隙度和渗透率、裂缝是页岩气储集的衡量条件;页岩气藏富集程度的关键因素主要包括页岩厚度、有机质含量和页岩储层空间三大因素。更多还原

【Abstract】 In the sight of the accumulation mechanism,reservoir-forming conditions,reservoir condition and enrichment pattern,caprock and preservation condition,shale gas reservoir is the typical transition in the performance characteristics and shows multiple-mechanisms including typical coalbed methane,typical source-contacting gas,and typical trap gas.The shale gas accumulation is affected by many factors including the sedimentary environment,total organic carbon content,kerogen type,and degree of thermal evolution.Measuring conditions of the shale gas reservoirs consist of the depth and thickness,porosity and permeability,and fracture of shales.The key factors of enrichment degree of shale gas include the thickness of shale,organic matter content and shale reservoir space.更多还原