异常压力是含油气盆地普遍存在的一种现象。据Hunt (1990)统计，世界上已经发现

有180个超压盆地，其中有160多个为富油气盆地。异常压力可发生在浅至地下数百米，或

超过六七千米的深度中；可存在于碎屑岩、厚层蒸发岩和碳酸盐岩地层中；可分布于区域范

围或极有限的范围；可分布于前寒武系一更新世地层。异常压力与生、运、储、盖、保等油

气成藏要素之间关系密切，异常压力过渡带常常是油气聚集的有利场所。在油气生成方面，

异常高压可降低烃源岩的成熟度，延缓烃源岩热演化的进程，当地层压力超过一定门限时，

压力对成烃有明显的抑制甚至是阻止作用，表现为压力系数与烃源岩生

-Abnormal pressure is a widespread phenomenon hydrocarbon basins. According to Hunt (1990) statistics, the world has been found

There are 180 overpressure basin, which has more than 160 oil and gas-rich basin. Abnormal pressure can occur in shallow to hundreds of meters underground, or

Six or seven kilometers in depth　may be present in rocks, thick evaporite and carbonate formations　may be distributed in the region Fan

Confining or very limited range　may be distributed in the Precambrian a Pleistocene. Abnormal pressure and health, transportation, storage, cover, insurance and other oil

Possession of a close relationship between the elements of air, abnormal pressure transition is often favorable for hydrocarbon accumulation place. In terms of hydrocarbon generation,

Abnormal pressure can reduce the maturity of source rocks, delaying the thermal evolution of source rocks process, the formation pressure exceeds a certain threshold,

Pressure on hydrocarbon significantly inh