Channel bar sedimentary micro-facies is most important effective sedimentary unit of the reservoir, the inner structure is more uniform and Gamma ray curves are characterized by more smooth and box with low amplitude. 心滩沉积微相是最主要的有效储层沉积单元,其内部结构较均匀,伽马曲线表现为较平滑的低值箱状曲线特征。