下扬子地区地跨四省一市(浙江、江苏、安徽、江西及上海市),中、古生界海相地层分布面积约17×10~5km~2。这一地区的油气勘探工作可以上溯到五十年代中期。三十多年来,地质矿产、石油部门的广大职工为之而付出整整一代人的艰辛劳动。八十年代以来,一系列令人振奋,发人思索的勘 In the Lower Yangtze region, there are four provinces and one city (Zhejiang, Jiangsu, Anhui, Jiangxi, and Shanghai). The distribution area of ​​the marine strata in the Middle and Paleozoic Seas is about 17×10~5km~2. Oil and gas exploration in this area can be traced back to the mid-fifties. For more than 30 years, the employees of the geological, mineral, and petroleum sectors have devoted an entire generation of hard labor. Since the 1980s, a series of exciting and thought-provoking surveys