The lithological traps were the minimum oil-gas gathering and transferring stations in the course of hydrocarbon migration and accumulation. 洼陷带岩性圈闭是含油气盆地油气运聚成藏过程中的小型油气集输站。
Though the reservoir-forming process is complex, the accumulating and preservation condition are good.Furthermore, the tectonic cleats caused by magmation promote the permeability. 虽然成藏过程较为复杂,但煤层理藏史与生烃史配置良好,有利于煤层气富集保存,又由于发育有由岩浆诱发成因的煤层构造裂隙而使储层渗透率提高。