Theoretical models of the hydrodynamicfield for petroliferous sedimentary basins may be classified into the symmetrical and asymmetrical types. In sedimentary basins, four local hydrodynamic units can be distinguished : (1) centrifugal flow caused by mudstone compaction in the depressions, (2) gravity-induced centripetal flow recharged by meteoric water infiltration at basin edges, (3) leaky flow, or leaky flow-evaporation loss, and (4) stagnation. The evolution of the hydrodynamic field was cyclic and each cycle may be divided into centrifugal flow stages when the basin subsides and receives deposits, and centripetal flow stage when the basin uplifts and is eroded. Accompanying the formation and evolution of the sedimentary basin, the hydrodynamic field would has a process of formation, development and elimination.The hydrodynamic field in the Songliao basin is obviously asymmetrical. Meteoric water in the northern and eastern parts of the basin infiltrated down asymmetrically to form the gravity-induced centripetal flow; water resulting from mudstone compaction in the depression in the central part of the basin formed centrifugal flow and leaky flow; the southern part of the basin is characterized by leaky flow-evaporation concentration. The intensity of groundwater hydrodynamics shows vertical zoning. With increasing depth, strong, weak and stagnant water zones may be distinguished.