南方海相油气勘探为什么久攻不下？

中国南方从震旦纪到三叠纪８个地质时代海相地层厚度巨大，具有很大的生烃能力。然而除四川地区之外，至今油气勘探尚无重大突破。积十二年对南方５个地质时代海相地层基础地质研究及制图的经验，认为南方海相油气勘探久攻不下的原因是：（１）对整个南方还缺乏全面的、历史的，整体的和深刻的认识；（２）还不于用什么方法或顺序去认识它。建议重视基础地质研究，并以中国南方二叠纪及三叠纪的岩相古地理研究和制图为例，提出基础地

Why an Important Breakthrough in Marine Oil-Gas Exploration in South China So Far Having Not Been Made

The marine sequence from Sinian to Triassic in South China,total eight geological times,is very thick with great capacity of hydrocarbon gen- eration.However an important breakthrough in oil-gas exploration has not been made so far except Sichuan,Cheshui and Jiannan.On the basis of 12 year experience in basic geological study and mapping of the marine sequence of five geological times in South China,it is be- lieved that the causes are as follows:1)There is lack of historical, complete and deep understanding in whole South China;2)People are not good at understanding it,e.g.don't know very well about which method and procedure are the best to know the marine geological fea- tures in the region.Authors stress the quantitative basic geological work.It is suggested that the quantitative basic geological study in South China might follow the example of Permian and Triassic lithofa- cies-paleogeographic study and mapping done before,then followed by study and mapping of structure,source-reservoir-cap rock and oil-gas preservation.