Abstract:

It has been proved by observation of a lot of cores that shallow lacus-trine sandbodies in hydrocarbon-bearing basins of the Meso-Cenozoic inEast China are the products of flood flow and can be divided into three se-dimentary microfacies:1.Channel microfacies,characterized by multistoryfinger sandbodies with base scour and parallel-lamination;2.Overflow mi-crofacies appeared as sheet-like sandbodies with mixed character of coarseand fine grain;3.Distal microfacies,characterized by well-developed lamina-tion and common burrows.The genetic model of shallow lacustrine terrige-nous debris sandbodies,represented by the ones of the Dongpu and Shong-liao Basins,have four properties.