【摘要】 与浅水陆架区一样,南海北部深水盆地新生代均处于南海北部准被动大陆边缘的构造环境,具有北部大陆边缘拉张裂陷的区域地质特征,盆地结构与中国东部裂谷断陷盆地类似,属双层或三层结构类型。该深水盆地油气运聚成藏的基本地质条件亦与浅水区类似,但陆坡深水区凹陷裂陷更深、沉积充填规模更大,且发育4套烃源岩和3套储盖组合类型,使深水油气运聚成藏有了良好的基础。基于深水区少井无井、地质资料缺乏的现状,借鉴浅水区油气成藏地质条件,并依据跨越深水区地震剖面层序地层,重点对深水油气运聚成藏条件进行了早期预测与综合评价,旨在加快和推进深水油气勘探进程。更多还原

【Abstract】 The structures of the basin in the northern continental margin of South China Sea are similar to the graben basins in east China which have double or three layers.Basic geological conditions for migration and accumulation mode of the deep marine basin are similar to the shallow ones,but the basin has deeper sags and rifts,bigger deposits and infillings,developed source rocks,and good source-reservoir-caprock associations.This paper focuses on the early forecast and evaluation on source rocks in deep basin and analyzes the oil and gas resource potential.For the lack of geological information,this paper used geological and geochemical characteristics of the source rocks in the shallow-water and the evaluation parameters as source of references to interpret the sequence stratigraphic profiles across the deep water and research their geology and geophysics.更多还原