In this paper, the author will take the Qibei area ad the example and from the point of to describe the oil generation, migration and accurmulation characteristics in superpressure condition.

• 压力对烃源岩中干酪根的热降解有阻滞作用，压力升高不仅使干酪根的化学键更稳定且不宜断裂，还使干酪根分子与烃源岩矿物结合更加牢固。