叠前深度成像技术及其应用

Prestack depth imaging technique and its application

从原理和技术两个方面分析了地震偏移技术的发展 ,指出了不同偏移技术的差异 ,对叠前深度成像技术中的速度建模准则、成像技术进行了深入的探讨 ,提出了速度建模应遵循的基本原则。通过叠前深度成像技术在海拉尔盆地的应用实例与常规叠前偏移剖面进行比较的结果 ,表明叠前深度成像效果明显优于常规叠后偏移效果。

The development of seismic migration technique is analyzed both from principle and technique and discrepancy of different migration technique is pointed out.The paper further discusses velocity modelling technique in the prestack depth imaging technique,and points out the basic principle of velocity modelling.By applying the prestack depth imaging technique in Hailar Basin and comparing the application case with conventional prestack migration profile,it shows that the result of prestack depth imaging technique is obvious better than that of the conventional poststack migration technique