【摘要】 本文以国内外典型煤成气田的大量资料为基础，从动态平衡的角度，对含煤地层形成大中型气田的源岩、聚集和保存三大主要条件进行了初步探讨。更多还原

【Abstract】 With a viewpoint of dynamic equilibrium,a preliminary approach has been made to the key factors which control over the formation of large and middle size of gas fields in coal-bearing systems on the basis of the studies on the typical coal-derived gas fields at home and abroad.It is proposed that source rocks , accumulation and preservation of natural gas should be essential conditions.更多还原