Through modern deposits survey in Dongting and Poyong lacustrine, detailed correlation of sandstone in mature oil field (Gasi N1-N12) and seismic attributes analysis of BZ28 in Bohai Bay, two types of shallow water deltas were recognized according to the sandbody type and distibution. Sand framework is mainly made of distributary channel in the first one and the other is mainly made of distributary bar. Sandstones are narrow and isolated in the delta mainly made of distributary channel, while sandstones are widespread and continuous in the delta made of distributary bar.