摘要
根据莺歌海盆地钻井资料、压力测试资料等,开展盆地超压特征的分析,结合构造演化及沉积过程,对盆地压力封存箱进行划分,并分析其形成及演化过程,探讨压力封存箱的形成、演化与成藏的关系。研究表明盆地存在3个主要的压力封存箱,压力封存箱经历的3期主要的演化阶段与盆地经历的3期主要构造活动相对应,压力封存箱的形成和演化是"动态"的。在3个构造期因泥底辟活动造成的箱体破裂,箱内流体向外运聚,该时期是油气的重要运聚时期,也是油气的主要成藏期。从压力封存箱的演化历史看,盆地中油气属于箱外的降温、降压过程中的成藏,这些泥底辟区及周围的斜坡地区应为油气勘探的重要目标区。非泥底辟带,构造相对稳定,超压封存箱演化也平稳,油气运聚规模不大。
Based on the drilling data and the pressure test data from Yinggehai Basin,this paper analyzes the characteristics of the overpressure, and combined with the tectonic evolution and sedimentary processes,it also classifies the pressure compartments and approaches the relationship between the formation and evolution of the pressure compartment and accumulation.The studies show that there are three pressure compartments in the basin,whose formation and evolution are“dynamic”.The three main stages of the evolution correspond to the three tectonic epochs experienced by the basin.Due to mud diapiric activities,the pressure compartment is ruptured at bottom and the fluid migrates and accumulates outside,and this period is also the most important migration and accumulation stage.The accumulation of oil and gas in the basin is in the cooling and hypotensive process outside the compartment as viewed from the evolution history of the pressure compartment, so the mud diapiric area and the slope area around are the important oil-gas exploration targets.In non-mud diapiric area,the structure and the overpressure compartments＆#39; evolution are relatively stable,and the hydrocarbon migration-accumulation scale is relatively small.
出处
《成都理工大学学报（自然科学版）》
CAS
CSCD
北大核心
2014年第6期760-767,共8页
Journal of Chengdu University of Technology: Science & Technology Edition
基金
"十二五"国家科技重大专项课题(2011ZX5023-004-009)
关键词
压力封存箱
演化
油气成藏
泥底辟带
莺歌海盆地
pressure compartment
evolution
hydrocarbon accumulation
mud diapiric
Yinggehai Basin
