【摘要】 在对川东北地区飞仙关组沉积构造背景认识的基础上,采用野外露头、岩心、测井及地震剖面等多种分析手段,通过对层序界面、相序、叠置结构、测井曲线及地震层序等标志的综合识别分析,将川东北地区飞仙关组划分为2个三级层序,认识到它们都发育有低位体系域、海侵体系域和高位体系域。进一步,通过层序地层格架剖面的建立,运用层序地层原理,在对层序地层控制因素分析的基础上,建立了川东北地区飞仙关组层序地层演化模式,从层序演化的角度上探讨了滩体的发育分布规律,对于下一步的油气勘探具有重要指导意义。更多还原

【Abstract】 Based on the knowledge of the sedimentary and tectonic settings in the northeast of the Sichuan basin,using the different methods,such as: outcrop,core,well-logging and seismic,and so on,with the careful analysis of the sequence surfaces,facies section,the stacking pattern,well-logging curves and seismic sequence stratigraphy,and so on,there are 2 third-order sequences distinguished in the Feixianguan Formation in the northeast of the Sichuan basin,both of which include the LST,TST and HST.Furthermore,using the theory of the sequence stratigraphy,by establishing the framework of the sequence stratigraphy of the Feixianguan Formation in the northeast of the Sichuan basin,based on the analysis of the control factors of the sequence stratigraphy,the evolution model of the sequence stratigraphy of the Feixianguan Formation is established in the northeast of the Sichuan basin.Furthermore,the distribution of the shoal is discussed in the framework of the sequence evolution;it is important to the further exploration of the hydrocarbon in the northeast of the Sichuan basin.更多还原