Abstract: Taking a certain dense pattern test area in Daqing oil field as an example, the use of small layer contrast, sedimentary microfacies and single sand identification technology, combined with modern sedimentary model and the outcrop research results and cores, referred to c logging and dynamic data and empirical formula, densely well pattern anatomy and dyad well analysis, summed up internal architecture model of the point bar in the study area. And under the guidance of the model, the author provides the basis for further tapping the potential and development in oil field.