【摘要】 运用层序地层学基本原理,充分利用地震、测井、录井等资料,综合岩性、电性及旋回特征,以层序地层等时对比的思路,对牛青地区沙三段地层进行划分与对比,发现牛青地区沙三段地层为一完整的三级层序,并对湖泛面进行识别,进一步划分出低位、水进、高位3个体系域,建立了沙三段的层序地层格架。认为沙三段地层整体是一个湖平面先上升后下降的沉积过程,在水进域沉积结束时湖水最深。更多还原

【Abstract】 Using the basic principles of sequence stratigraphy,by making full use of seismic,well logs and log data,et al,through a comprehensive analysis of lithology,electrical and cycle characteristic,the formation of Es3in Nuqing area was divided by using the isochronous correlation idea of sequence stratigraphy.we found that the Es3in Nuqing area is a complete third-order sequence,and the flooding surfaces were identified,the formation was further diveded into lowstand,transgressive and highstand 3 system tracts,and established the sequence stratigraphic framework of Es3.Overall,the lake level of Es3was increased at first and then decreased,and at the end of the transgressive system tract was the deepest.更多还原