摘要
莺歌海盆地是一个独特的沉积盆地，其以强烈的底辟构造，巨厚的沉积盖层，快速的沉降沉积活动和异常高温高压等地质现象而著称，在调研大量文献的基础上，对莺歌海盆地底辟构造及其对天然气成藏的影响进行了分析，认为盆地内的底辟构造属于流体底辟构造，阐述了底辟构造的发育特征，从底辟产生的物质基础（流体源）和外界条件（热能、退覆层系，外力）等方面探讨了流体底辟的成因机制，总结出流体底辟构造形成的理论模式，并从圈闭，运移，保存等方面阐述了底辟构造对天然气成藏的贡献。
Yinggehai Basin is characterized by intensive diapirs,very thick deposits,rapid subsidence and sedimentation,and abnormal high temperature and pressure.On the basis of an extensive literature,we analyse diapirs and their effect on hydrocarbon accumulation in Yinggehai Basin.The diapirs are produced by fluid and have some signatures.Their origins are discussed from material(fluid source)and environmental factors(thermal energy,density inversion and stress),resulting in a theoretical model of the diapirism.Finally,the diapirs' contributions to hydrocarbon accumulation are illustrated in trapping,migration and preservation.
出处
《中国海上油气（地质）》
2000年第4期253-257,共5页
China Offshore Oil and Gas(Geology)
关键词
莺歌海盆地
流体底辟构造
天然气
成藏
高温高压
成因机制
理论模式
Yinggehai Basin
fluid diapir
high temperature and pressure
origin
theoretical model
contribution to hydrocarbon accumulation
