苏北盆地是结构复杂的中、新生代复合盆地。特殊的形成演化历史,致使盆地的油气成藏条件具有断陷盆地多套烃源岩、多期成烃、多种成藏组合的典型特征,多期构造事件的改造,导致盆区的分化裂解,含油气系统以分割断陷为基础,多次抬升剥蚀造成源岩成熟度相对较低,逆冲、走滑断裂及反转等构造活动,导致成藏规律复杂。 Subei Basin is a complicated Meso-Cenozoic composite basin. The special formation of evolutionary history has resulted in the accumulation of oil and gas reservoirs in the basin with typical characteristics of multiple sets of hydrocarbon source rocks, multi-stage hydrocarbon generation and multiple hydrocarbon accumulation assemblages in the faulted basin, the transformation of multi-phase structural events and the differentiation and pyrolysis of the basin , The petroleum system is divided and faulted. Based on multiple uplift and denudation, tectonic activities of source rock, such as relatively low maturity, thrusting, strike-slip faults and inversion, lead to complicated reservoir forming rules.