陆地资料层间多次波压制技术优化研究

Study on Optimization of Internal Multiple Suppression Technique for Land Data

在陆地资料中,层间多次波在地震勘探过程中是一种顽强的干扰波,它的存在严重影响了成像的真实性与可靠性。由于陆地资料本身的复杂性,使得层间多次波在成因和类型上更加复杂。在实际陆地资料层间多次波的压制处理中,用单一的方法很难同时兼顾到近偏数据和远偏数据的压制效果,从而影响最终的成像效果。通过对逆散射级数法及Radon变换法原理及效果的分析比较,并根据实际资料处理结果,提出了联合逆散射级数法与Radon变换法压制层间多次波的最优化处理流程,使层间多次波得到最佳的压制效果,提高了地震资料的分辨率和成像精度。

In land data processing,internal multiple removal is one of the most challenging and long-standing problem.The present ofthe internal multiples affects the reality and reliability of seismic imaging.The more complexity of the land data is,the more complex type ofthe internal multiple generates.In field data processing,it is very difficult to apply single method to remove internal multiples at near andfar offsets.Comparing the inverse scattering series(ISS)method and Radon transform method,the joint method including ISS and Radontransform is proposed and tested on the field data.The tested result shows that the combination method can effectively remove the internalmultiples and improve the data resolution and imaging accuracy.