Reformed petroliferous basins are those that the feature of the prototype basins have changed greatly under inner and outer geological dynamics.According to different geological dynamics

the reformed basins could be divided into three types:(1)uplift-reformationtype;(2)fault-block reformationtype

and(3)thrust-fold reformationtype.The thinking and method for the exploration of reformed basins should not always use the principle of “determining depression and selecting zone”

but establish a new research thinking of “late pool-forming

pool-forming unit and integral continuous sealing”

and divide the pool-forming units of the basins into reformation-destroying

reformation-preserving and reformation-building types.The last two kinds of pool-forming units are favourable for hydrocarbon exploration.