济阳坳陷沾车地区中生界沉积体系

随着油气勘探开发的不断深入，济阳坳陷中生界油气藏日益受到重视。针对济阳坳陷沾车地区中生界缺乏详细地质分层和沉积体系研究、勘探开发受到地震资料解释和层位对比严重限制的实际问题，以该区近130口钻录井、测井层序、古生物和三维地震等资料为基础，采用沉积体系分析方法，将其中生界划分为下一中侏罗统坊子组、中侏罗统三台组、上侏罗统蒙阴组和下白垩统西洼组4个层位；建立了沾车地区中生代地层充填系列，并识别出主要发育的河流沉积体系（包括曲流河和辫状河）、冲积扇沉积体系、湖泊沉积体系和三角洲沉积体系，系统研究了各沉积体系的类型、特点、分布和空间演化。

Mesozoic depositional system of Zhan-Che area in Jiyang Depression

With the in-depth development of exploration and production in Jiyang Depression, the oil & gas reservoirs in the Mesozoic are paid more and more attention. Detailed geologic stratification and sedimentary system research lack in Mesozoic of Zhan ?Che area in Jiyang Depression. Exploration and production are restricted in seismic data interpretation and horizon correlation. Based on the synthesizing data on drilling, well - logging sequence, palaeontology and 3D seismic,four horizons are divided in the Mesozoic Jiyang Depression: Fangzi Formation of Lower-Middle Jurassic ( J1f) ,Santai Formation of Middle Jurassic system( J2a) ,Mengyin Formation of Upper Jurassic ( J3m) , Xiwa Formation of Lower Cretaceous( K1x) according to the analysis method on depositional system. Filling series of Mesozoic formations in Zhan - Che area are established. At the same time,4 kinds of sedimentary systems in the area:fluvial( meandering river and braid river) ,alluvial fan,lacustrine,and delta sedimentary systems,have been identified. The patterns, characteristics, distribution and space evolve-ment of those sedimentary systems have been researched systematically.