摘要
对东海陆架盆地西部坳陷带中生界分布特征及其油气勘探方向的研究认为:研究区中生界分布广、厚度大,主要沉积在南部地区,最大厚度超过6 000 m,除凹陷内有分布外,隆起区也有分布。白垩系主要发育在长江凹陷、海礁低凸起、瓯江凹陷、闽江凹陷和台北低凸起地区;侏罗系主要发育在闽江凹陷。闽江凹陷的中生界厚度大,烃源岩条件好,局部构造圈闭发育,既有区域性盖层又有局部盖层,生储盖条件优越。因此,闽江凹陷是东海陆架盆地西部坳陷带油气勘探前景最好的区域。
The authors discussed the Mesozoic distribution characteristics and hydrocarbon exploration direction in western depression zone of East China Sea shelf basin. The results indicate that： the Mesozoic strata are widely distributed with great thickness （ 〉 6 000 m in max）, and mainly developed in southern area. The Cretaceous sediments are distributed in Changjiang sag, Haijiao lower uplift, Oujiang sag, Minjiang sag and Taibei lower uplift; and the Jurassic sediments are mainly distributed in Minjiang sag. Minjiang sag has great thickness in Mesozoic with good source rocks and develops local structural trap, which has both regional and local seals with superior source-reservior-seal condition. Therefore, the Minjiang sag is the most in exploration prospect area in western depression zone of East China Sea shelf basin.
出处
《世界地质》
CAS
CSCD
2011年第3期396-403,共8页
World Geology
基金
地质大调查项目(200311000007)
关键词
东海陆架盆地
西部坳陷带
中生界
油气前景
East China Sea shelf basin
western depression zone
Mesozoic
hydrocarbon perspective
