【摘要】 在对鄯勒区域地质资料、地震数据、测井及岩芯资料分析的基础上,研究了鄯勒油田沉积特征及沉积演化模式.结果表明:鄯勒地区西山窑组发育三角洲、扇三角洲和湖泊三种沉积相类型;以北部博格达山为物源的扇三角洲沉积主要发育在研究区北部的西山窑组一段,南部以觉罗塔格山为物源的三角洲沉积在西山窑组一、二段广泛发育,而湖相沉积主要分布于西山窑组三段和四段;在南北双向物源的控制下研究区主要经历了3个沉积演化阶段,即西山窑组一段南北双向混源、湖盆充填式沉积阶段,二段南部稳定的三角洲沉积阶段和三、四段深水体、广水域的扩张沉积阶段.更多还原

【Abstract】 Based on the analysis of the regional geology,seismic data,logging data and core data,the sedimentary characteristics and sedimentary model of Xishanyao formation in Shanle oilfield were investigated.The results show that lacustrine,delta,and fan delta facies are the three types of sedimentary facies in the Xishanyao formation.Fan delta deposit which originated from the Bogda mountain in the Northern part is mainly developed in the first segment of Xishanyao formation,while in the south,delta deposit originated from the Jueluotage mountain is widely developed in the first and second segments of Xishanyao formation.Lacustrine deposit is mainly distributed in the third and fourth segments of Xishanyao formation.Under the control of North-South bidirectional sources,Xishanyao formation underwent three main stages of sedimentary evolution:the lake basin-filling phase controlled by North-South bidirectional sources of the first segment of Xishanyao formation,the North steady delta sedimentation phase of the second segment and the deep-vast water expansion sedimentation phase of the third and fourth segments.更多还原