中国南方海相油气勘探研究新进展

中国南方海相油气勘探研究取得６个方面的进展；１．重塑了华南板块的四个构造演化阶段，将华南板块划分出三个构造区，一个火山岩区和两个造山带，并了南方构造格架与演化对油气地质条件的控制．２．分析了华南板块南北两个大陆边缘沉积盆地的二级超旋回层序，凝缩层段及其与烃源岩发育的关系，并重点分析了区域性四套主力烃源岩的特点；３．提出了华南板块北南两个前陆盆地带的发育对中国南方海相油气的后期保存起着重要的作用。

New Advances on Marine Sequence Oil-gas Exploration Research in South China

Six advances have been made on marine oil-gas exploration re- search in South China.(1)Give four structural evolution stages of Huanan Plate a reconsideration.It is considered that Huanan Plate may be divided into five zones,three structural zones,one volcanic rock belt and two orogenic belts,which control petroleum geological conditions of South China.(2) Analyze the second-order supercyclic sequences and con- densed sections of southern and northern two continental marginal sedimentary basins of Huanan Plate.Put the stress on the four regional dominant source rocks.(3)State that the two foreland basin zones in southern and northern parts of Huanan plate play an important role in marine oil-gas later preservation in South China.(4)Analyze the marine sequence of Sichuan Basin which is favorable for oil-gas exploration,make a com- parison of source rock,preservation condition and possibility of later pool-generating with South China.(5)According to the thoughts of seal and preservation conditions as a whole and later pool-generating,divide preserved oil-gas units of South China into inheritance,reconstruction and structure patterns which are further given a classification evaluation.(6)Sixteen marine basins or blocks in South China have been evaluated by weighted marks of experts' experience and comprehensive in- dexes.