摘要
多次波问题一直是海洋地震资料处理中的难题,基于波动方程的多次波压制方法SRME是近20年来发展起来的一种有效的多次波衰减方法.该方法的特点是基于波动理论,利用地震数据本身来预测多次波,而不需要地下介质的任何信息,即这种方法可以应对地下任何复杂的情况,因此应用范围较广.本文通过SRME方法在海洋地震资料LH油田的应用实例证明了该方法的有效性——SRME多次波衰减方法对海底有关的多次波的衰减非常有效,特别是对近道多次波模拟准确,未损伤有效波,一定程度上提高了地震数据的分辨率.
For the exploration of oil and gas reservoirs, multiples can be one of the main problems in applying the seismic method, especially in a marine enviroment. To solve this problem, a method named ＂SRME＂ has been developed over the last two decades and is currently applied to many seismic datasets with large success. It can he used in a prestack mode（common-midpoint gathers）. The algorithm for the multiple attenuation is based on wave theoretical principles in which the data are used as a prediction operator. The estimated multiples are then adaptively substracted from the input data to obtain primary-only data. Its aim is to regularize the data,improve S/N ratio,and balance the seismic amplitudes. The effectiveness of this method in suppressing multiples is demonstrated by a case involving processing marine seismic data in this paper. It indicates that SRME can attenuate multiples related with sea floor.
出处
《地球物理学进展》
CSCD
北大核心
2010年第3期1057-1064,共8页
Progress in Geophysics
