摘要
准噶尔盆地南缘二叠系芦草沟组发育了一套厚层的泥页岩。前人研究把芦草沟组划分为一个完整的三级层序,但是对这种细粒沉积物层序内部体系域的划分界面认识还不一致。随着近年来页岩气在暗色泥页岩中被大量勘探开发,深水泥页岩对湖平面的响应和层序格架划分成了一个高难度的课题。根据岩性相和岩石地球化学参数对湖平面响应的敏感变化特征,对准页3井芦草沟组体系域和体系界面进行了识别和分析,分析优质烃源岩的分布特征,为后续页岩气的勘探开发提供参考,同时为其他地区湖相泥页岩层序地层学研究提供借鉴。
A set of thick argillutite has developed in the Lucaogou Formation, south margin of Junggar Basin. Lucaogou Formation has been partitioned into a complete third-order sequence by previous studies, but to this kind fine-grained sediment sequence internal systems tracts partition interfaces cognition is still inconsistent. With shale gas has been explored and exploited massively in dark argillutite in recent years, deep water argillutite responding to lacustrine level and stratigraphic sequence framework partitioning have proved to be a difficult topic. According to lithofacies and rock geochemical parameters responding to lacustrine level sensitive variation features have carried out identification and analysis for well ZY No.3 Lucaogou Formation systems tracts and systems interfaces. The analysis of high quality source rock distribution features has provided reference for subsequent shale gas exploration and exploitation, also for other areas lacustrine facies argillutite sequence stratigraphic study.
作者
陈健
庄新国
Chen Jian;Zhuang Xinguo(Guangdong Bureau of Coal Geology,Guangzhou,Guangdong 510160;Ministry of EducationKey Laboratory of Tectonics and Petroleum Resources,CUG,Wuhan,Hubei 410074)
出处
《中国煤炭地质》
2021年第7期34-39,共6页
Coal Geology of China
关键词
泥页岩
层序地层学
芦草沟组
argillutite
sequence stratigraphy
Lucaogou Formation
