下扬子海区南黄海盆地油气勘探的几点认识

A DISCUSSION ON OIL AND GAS POTENTIAL IN THE SOUTH YELLOW SEA BASIN OF LOWER YANGTZE SEA AREA

南黄海盆地具有50年的油气勘探历史,但至今还是我国海域唯一尚未发现工业油流的大型含油气盆地。简要概述了南黄海盆地的油气勘探历程,以2005年为界,将其划分为前后两大勘探时期,代表南黄海盆地油气勘探由新生界向中—古生界转变的历程,共经历了自营勘探、对外合作勘探、国土资源大调查和全国油气资源战略选区调查评价4个阶段。通过地震地层、沉积地层、构造演化和资源潜力评价的分析,指出多期盆地叠置和复杂构造演化是其中的关键点和难点,具有重要的意义。

Half century has passed since China started oil and gas exploration in the South Yellow Sea Basin. It remains as the only large sedimentary basin without industrial oil flow discoveries so far in China offshore areas. The article offers a brief overview of the South Yellow Sea Basin oil and gas ex- ploration history, which is divided into two large exploration periods around 2005, marked by the shift of exploration target from the Cenozoic to the Mesozoic and Paleozoic, which included four stages of self-exploration, international cooperative exploration and research, national resources investigationprogram and new round of selection and evaluation of the national strategic petroleum target areas. We reviewed the research status respectively from four disciplines including the seismic stratigraphy, the sedimentary strata, tectonic evolution and evaluation of resource potential in the South Yellow Sea. It is believed that the stacked multi-stage basin and complex tectonic evolution remain as the key for further exploration. Further study targets are proposed in this paper for breakthrough of oil and gas exploration in this region.