模型约束方法在低信噪比地震资料处理中的应用

模型约束方法是低信噪比地震资料处理一种重要方法,由于信噪比低,常规的叠前去噪方法容易损伤有效波的频率成分,而模型约束叠前噪声衰减能够更有效地突出有效波的能量。时差校正问题也是低信噪比地震资料处理中的难题,采用叠加模型道约束的方法能比较完善地解决这一难题,论文对模型约束方法原理和实现过程进行了阐述;采用该方法对实际资料处理,取得了理想的效果。

THE APPLICATION OF MODEL LIMITED METHOD IN LOW S/N SEISMIC DATA PROCESSING

Model limited method is one of the most important method to process the low S/N seismic data.Because of the low S/N,conventional prestack noise attenuation method will damage the frequent element of valid wave.However,the prestack noise attenuation with the model limited method can stress the energy of the valid wave efficiently.Moveout correction is also one of the diffecult problems in processing the low S/N seismic data.If adopting the limited model method,the problem can be solved.The article discussed the principle and procedure of the model limited method and proved the method is effective.