Five types of sedimentary microfacies , such as underwater distributary channel mouth bars, front sheet and far sand bars, and front fan delta muds, are differentiated.

• 研究区可作为储层的砂体主要为水下分流河道砂体、河口坝砂体、前缘席状砂砂体及远砂坝砂体。不同类型的砂体由于其形成环境不同,其物性和分布有较大差异。