【摘要】 鄂尔多斯盆地三叠系延长组地层层序划分方案较多。在V ail经典层序地层学理论指导下,综合利用露头、岩芯、钻井、地震和古生物等资料,通过古水深分析和层序界面的识别与划分,认为将鄂尔多斯盆地三叠系延长组划分为7个三级层序更为合理,指出层序4水进体系域(生)+层序5低位体系域(储)+层序5水进体系域(盖)和层序4水进体系域(生)+层序4低位体系域(储)+层序4水进体系域(盖)是相对较佳的2套生储盖组合,并指出了鄂尔多斯盆地延长组最主要的2套生储盖勘探目的层。更多还原

【Abstract】 There are many sequence stratigraphic classification project of Yanchang formation in Ordos basin.This time is under theory of Vail sequence stratigraphy,avail information of outcrop,lithology,well,seismic and paleontology,analysis depth of ancient water,compartmentalize the sequence,the article and think there seven sequence and two better sources-reservoir-cap assemblages of Yanchang formation in Ordos basin.更多还原