摘要
中国中西部发育3种不同的前陆盆地系统组合类型,即叠加型前陆盆地(冲断带)、早期型前陆盆地和晚期型前陆盆地(冲断带),它们的生储盖组合、成藏时期、成藏后的改造作用以及油气有利勘探部位均有不同。叠加型前陆盆地主要发育早期前陆盆地和两期前陆盆地之间的拗(断)陷湖盆两大套烃源岩,多期成藏,以晚期成藏为主;早期型前陆盆地主要烃源岩发育与前陆同期,油气成藏时期相对较早;晚期型前陆盆地只发育再生前陆期之前的拗(断)陷湖相和湖沼相烃源岩,以晚期成藏为特征。前陆冲断带油气勘探潜力取决于冲断带与烃源灶的匹配关系和冲断带上覆盖层的保存条件。
Three types of foreland basins, overlapped foreland basin （thrust belt）, presenile foreland basin and reformed foreland basin （thrust belt）, are developed in west China, with different source-reservoir-cap combination, hydrocarbon accumulation time, and reservoir reformation, The overlapped foreland basin is characterized by two source rocks developed in the fault-trough lake basin between the early foreland basin and two-stage foreland basin. And the hydrocarbon was accumulated in multi-stages concentrating in late stage, The source rock in presenile foreland basin is deposited during the basin development and the hydrocarbon is accumulated in early stage, The exploration potential could be controlled by the correlation between thrust belt and hydrocarbon sources and the conservation of the overlying caprock.
出处
《石油勘探与开发》
SCIE
EI
CAS
CSCD
北大核心
2005年第3期1-6,共6页
Petroleum Exploration and Development
基金
中国石油天然气股份有限公司勘探与生产公司"前陆盆地复杂构造分析与圈闭评价"项目
关键词
中国
前陆盆地
生储盖
成藏特征
China
foreland basin
source-reservoir-cap
accumulation feature
