Abstract:As other inversion,there exists the issue of multiple solutions in the seismic wave impedance inversion.The paper considered that correctly using logging data constraint is the effective approach for solving this issue.Affecting by measuring apparatus in borehole and environmental factors,the logging data resulted in larger errors in interval transit time and density data,so,the correction and match processing of logging data are basis of creating wave impedance model and constrained operation.The statistic was carried out for logging data in multiple wells of Jiyang depression,and the coefficient that the synthetic seismic records correlate with borehole-side seismic traces is only 70%,which is unable to meet the needs of L2 functional of optimum solution,only weakening high-frequency constraint can the trueness of inverted data volume be guaranteed.In a process of data interpretation,it can set uniform threshold of reservoir (the max and min wave impedance values of reservoir),then,using geologic information to carry out strong constraint to wave impedance data volume through bipartite interpolation,which can improve the resolution of reservoir description in both vertical and horizontal directions.