摘要
针对中国南方海相碳酸盐岩油气勘探的现状 ,从层序地层研究出发 ,提出以储层为中心、动态实用的生储盖分类方案 ,首次将中国南方海相碳酸盐岩油气生储盖组合划分为界面型、低位型、海侵型、高位型和综合型 5种类型。不同类型的生储盖组合 ,其沉积地质特征及油气地质意义存在差异。界面型生储盖组合的油气组合有效性较差 ;低水位型生储盖组合储集体规模较小、分布广 ,运移条件最佳 ;海侵型生储盖组合储集体规模较小 ,但盖层封闭能力强 ;高水位型生储盖组合油气丰富 ,在所有成因类型组合中规模最大、分布最广 ,具有区域对比性和全球成因特点 ;综合型生储盖组合规模大、分布广泛且稳定 ,油气源具有多源性、多期性、多成因等特点。
In view of status of petroleum exploration in marine carbonates in southern China,a dynamic and practical classification scheme is presented for source-reservoir-cap rock combinations based on sequence stratigraphy study. It divides, for the first time, the source-reservoir-cap rock combinations in this region into 5 types,including boundary type, low water type, transgression type, high water type and composite type.Various types of combinations have different sedimentary and geological features and different petroleum geological significances. The boundary type is characterized by poor effectiveness in timing; the low water type is characterized by its wide distribution,small reservoir bodies and optimum migration conditions; the transgression type has strong sealing capability with small reservoir bodies; the high water type is rich in petroleum and is characterized by its largest reservoir bodies,widest distribution and regional and even globel comparability; while the composite type is characterized by its large, wide and stable distribution and hydrocarbon accumulations of multiple sources,multiple stages and multiple geneses.
出处
《石油与天然气地质》
EI
CAS
CSCD
北大核心
2004年第1期62-69,共8页
Oil & Gas Geology
基金
中国石化重大攻关项目"中国南方震旦系 -中三叠统构造层序岩相古地理研究与编图
关键词
油气成藏
古生界
层序地层
中国南方
petroleum accumulation
Paleozoic
sequence stratigraphy
southern China
