【摘要】 以孤北~桩海地区古近系东营组为研究对象,通过大量的地震剖面解释、测井资料分析、钻井岩芯观察,在研究区东营组岩石学特征分析的基础上,详细研究了层序划分及层序特征,共划分出SQ1、SQ2二个长期旋回,Ed1、Ed2、Ed3、Ed4四个中期旋回。同时,还深入讨论了各层序在地震剖面、钻井剖面及测井曲线上的特征;论述了各层序的发育特征。其中,Ed1层序在全区呈对称分布;Ed2层序主要发育下降半旋回;Ed3层序旋回对称明显,全区均有分布;Ed4层序在研究区内主要发育上升半旋回。通过对该地区层序划分的认识,为该地区的层序对比和层序地层格架的建立等,提供了重要的依据。更多还原

【Abstract】 In this paper,with the Dongying formation of paleogene tempestites in Gubei-zhuanghai as the research object,based on lots of interpretation of seismic profiles,analysis of well logging,the observation of drilling cores,and the analysis of the petrology characters,the sequence distribution and the characters of the Dongying formation were researched and divided into two III-grade sequences,SQ1 and SQ2,and four intermediate cyclothem,Ed1、Ed2、Ed3、and Ed4.And the characters of the sequences on seismic profiles,drilling profile and well logging were profoundly discussed also.The developed characters of each sequence had also been discussed.The Ed1 sequence develops ascending and falling cycle in this area;the Ed2 sequence mainly develop the falling cycle;and Ed3 sequence develops ascending and falling cycle;the Ed4 sequence mainly develop the ascending cycle.The matching of successions and the establishing of strata sequence formwork had provided significant condition through the understand of the sequence distribution.更多还原