摘要
Based on the principle and methods of sedimentology,the sedimentary characteristics of Cretaceous Hutubihe Formation of Dixi 12 well block in Junggar Basin were analyzed.The results show that Hutubihe Formation’s lithologic character is fine sandstone,gray siltstone,argillaceous siltstone,brown mudstone alternate layers.Dixi 12 well block is arid braided river.And the microfacies are river channel,channel bar,embankment and flood plain.The sedimentation and facies belt distribution range of different sedimentary microfacies are main factors influencing reservoir performance .