大港滩海区沙一段下部重力流水道沉积特征分析

Analyses of Sedimentry Features of Gravity Flow Channel Sand Body in Seabeach of Dagang Oilfield

胡耀军¹,陈昭年²,刘伟兴¹,马　玲¹,盛东杰¹

Hu Yaojun , Chen Zhaonian, Liu Weixing, et al

1. 大港油田勘探开发技术研究中心,2. 中国地质大学能源系,北京

Research Center of Exploration and Development , Dagang Oilfield Company , CNPC, Tianjin 300280 , P. R. China

重力流水道砂体是大港滩海区重要的储油砂体类型。通过对重力流水道砂体的粒度特征、沉积构造、沉积层序、岩相分布及砂体与沉积相带展布特点的分析,初步探讨了大港滩海区重力流沉积的成因,明确了有利储集相带展布,指出了下步勘探方向。

Gravity flow channel sandbody is one of the most important reservoir in Dagang Oilfield. This paper distinguishes turbid-flow channel deposits by grain-size distribution curves , sedimentary structure and sequence ,graded facies and so on , and discusses the origin of channel deposits by analyzing its lithofacies distribution.