Based on meticulous geological research, this study achieves significant advancements in the quantitative characterization of point bar sand bodies and horizontal joint well layout. By elucidating the genesis of composite sand bodies, we establish “three definitive” criteria for point dam characterization, enabling qualitative descriptions of residual oil in point dams. Furthermore, we facilitate the deployment of horizontal wells through the “vertical intercalation and crossing point dam” approach. At the same time, the quality of the system is controlled, the injection and production capacity is maintained, and the real-time optimization and tracking adjustment is made. Based on a comprehensive understanding of fine geology, incorporating the three major contradictions of plane, interlayer, and intra-layer, dynamic and static depth integration, the “four points and four improves” classification geological adjustment method is developed. Finally, the low water cut period of the block was achieved for 31 months, and the oil recovery rate was increased by 17 percentage points, laying a solid foundation for achieving the ultimate goal of 25 percentage points. This method has a certain reference significance for improving the development effect of strong alkali ternary compound flooding.