地表一致性约束下异常振幅衰减技术的实现

Realization of surface consistent constrained anomaly amplitude attenuation technology

(1.CNPC东方地球物理公司研究院处理中心,河北涿州072751;2.CNPC东方地球物理公司物探技术研究中心,河北涿州072751)

Wang Jun,Data Processing Center of Geophysical Research Institute,BGP,CNPC,Zhuozhou 072751,China

地表一致性约束下的异常振幅衰减技术对不满足地表一致性的异常振幅进行衰减，在地震资料保幅叠前去噪方面发挥着重要作用。该技术
主要包括振幅的统计计算、地表一致性约束下的统计振幅的迭代分解以及对异常振幅进行判别并计算比例因子、在地表一致性约束下调整每一
道的振幅3个部分。通过对地表一致性异常振幅衰减技术的解剖、方法研究、软件研发,总结出了该项技术的方法原理、算法和基于CGG系统的多
入口程序的实现;结合实际地震资料处理,论证了参数选取方式，通过比较，分析了该技术的实际应用效果。

During the attenuation of anomaly amplitude without surface consistent,surface consistent constrained anomaly amplitude
attenuation technology plays an important role in amplitude-preserved prestack denoising.The technique mainly includes
statistical computation of amplitude,iterative decomposition of statistical amplitude,discrimination of anomaly amplitude and
computation of scaling factor,as well as adjusting the amplitude of every trace constrained by surface consistency.By
analyzing the surface consistent constrained anomaly amplitude attenuation technology,we realized the multi-entry program
based on CGG system.Combining with actual data processing,the parameter selection method was discussed.Meanwhile,the actual
data application effect was analyzed by comparison.

10.3969/j.issn.1000-1441.2001.05.011