北黄海盆地东部坳陷构造演化与油气地质特征

Abstract

北黄海盆地是我国近海海域惟一没有形成工业油气流的含油气盆地,东部坳陷是北黄海盆地勘探潜力最好的一个区域,该坳陷的油气地质特征和勘探方向研究成为实现这一盆地油气勘探突破的关键。通过对已取得的勘探成果和现有资料的综合研究,指出东部坳陷存在三套生、储、盖组合,其中下白垩统生、储、盖组合最具勘探潜力。

The North Yellow Sea Basin is the only oil and gas-bearing basin,which does not form industrial oil-gas flow.The Eastern Depression is one of the most potential areas of the North Yellow Sea Basin,and the study of hydrocarbon geologic characters and structural evolution is the key to the exploration.Based on the analysis and researches of the former achievements and latest data,the hydrocarbon geologic characters and pool formation condition of Eastern Depression are advanced.In addition,three source-reservoir-cap rock assemblages are identified.Among them,late Jurassic source-reservoir-cap rock assemblage is the most potential one.