【摘要】 以层序地层学理论为指导,在井震联合标定的基础上,综合运用地震、测井、钻井、岩芯及野外露头资料,建立了塔北隆起哈拉哈塘地区白垩系卡普沙良群层序地层格架。将卡普沙良群划分为5个三级层序,并在层序格架内进行了沉积相识别及沉积体系研究,识别出了河流、三角洲及湖泊等沉积体系。结合前陆盆地构造演化阶段的分析,认识了沉积体系展布规律。指出油气勘探应围绕SQ1、SQ2、SQ5层序低位及高位体系域的储集砂体开展,在平面上研究区中部三角洲前缘相带为有利区带。更多还原

【Abstract】 Based on the theory of sequence stratigraphy and analysis of seismic data,logging,cores and outcrop information,the sequence stratigraphy framework of Cretaceous in the central Tabei Uplift is established. The Kapushaliang Group as a second-order sequence,is divided into five third-order sequences. Each third-order sequence consists of lowstand system tract,transgression system tract and highstand system tract. Braided river,meandering delta and laucstrine facies are recognized within the sequence. The distribution of sedimentary systems are analysed with the tectonic evolution of the foreland basin. Halahatang area is located in back-bulge zone of the Kuqa depression foreland basin. The structural evolution of foreland basin of Kuqa depression in Cretaceous has its phases,which controls the characteristics of depositional palaeogeography development in the depression in different stages. The sand bodied of lowstand system tract and highstand system tract of SQ1,SQ2 and SQ5 are favorable explore targets and the meandering delta front in the middle of the study area are also favorable zones.更多还原