The conclusion is that the secondary pores caused by the dissolution of the late B period diagenesis match the migration of hydrocarbon and they are the main spaces accum.

• 总结出了晚成岩B期的溶蚀作用形成的次生孔隙是与烃类气体运移相匹配的，是天然气聚集的主要储集空间；而中晚期的方解石胶结则是形成成岩封闭的关键。