摘要
依据成因机制,坡折带可分为构造坡折带、沉积坡折带和侵蚀坡折带三大类。构造坡折带可细分为断层、褶皱和挠曲坡折带三个亚类;沉积坡折带则易在台地和生物礁体的边缘形成或由沉积的差异压实作用和断层坡折带转化而来。根据二连盆地勘探实例,论述了不同类型坡折带与隐蔽油气藏形成的关系,并在乌里雅斯太凹陷东坡找到了5000×104t储量规模的坡折带复式油气聚集带。综合研究表明,坡折带是斜坡构造带油气勘探的重要方向。
According to origin mechanism slope break belt can be classified into three types of structural, sedimentary and erosional slope break belts. Structural slope break belt is subdivied into three sub-types of fault, fold and flexure slope break belts; Sedimentary slope break belt was easy to be formed at the edge of platform and bio-herm or formed under differential compaction or transferred from fault slope break belt. According to exploration examples in the Erlian basin, the relation between different types of slope break belts and subtle reservoirs forming was discussed. Slope break multiple hydrocarbon accumulation zones with 5000×104t reserves were found in the east slope of Wuliyasitai sag. Comprehensive research presents that slope break belt is the important exploration orientation in slope structural zone.
出处
《油气地质与采收率》
CAS
CSCD
2004年第6期22-23,38,共3页
Petroleum Geology and Recovery Efficiency
