煤层气作为一种非常规天然气，其运聚机制和成藏模式与常规天然气不同。
The mechanism and pattern of reservoir are different between CBM and natural gas.
为此，对盆地中心气系统的概念、该系统的形成演化、成藏机理与成藏模式进行了阐述；
The concept, evolution, reservoir forming mechanism and mode of the basin-centered gas system are described.
为此，对盆地中心气系统的概念、该系统的形成演化、成藏机理与成藏模式进行了阐述；
The concept, evolution, reservoir forming mechanism and mode of the basin-centered gas system are described.
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