基于反演的稳定高效衰减补偿方法  

A stable and efficient attenuation compensation method based on inversion

作　　者：王本锋[1,2] 陈小宏[1,2] 李景叶[1,2] 陈增保[1,2] 刘国昌[1,2] 

机构地区：[1]中国石油大学(北京)油气资源与探测国家重点实验室,北京102249 [2]中国石油大学(北京)CNPC物探重点实验室,北京102249

出　　处：《地球物理学报》2014年第4期1265-1274,共10页Chinese Journal of Geophysics

基　　金：国家自然科学基金项目(U1262207;41074098);国家科技重大专项课题(2011ZX05023-005-005)联合资助

摘　　要：反Q滤波方法是提高地震数据分辨率的一种有效途径,可以用来补偿振幅和校正相位.常规的反Q滤波方法一般基于波场延拓理论,具有不稳定性或振幅补偿不足的缺点.本文基于波场延拓的正Q滤波方程,借鉴反演的思想以及正则化策略提出了一种新的衰减补偿方法,该方法稳定、精确,利用该方法可最终得到高分辨的地震记录.该方法仅计算有效频带内的频率分量,提高了计算效率.模拟数据以及实际数据处理验证了本文方法的有效性.Inverse Q filtering, which can compensate amplitude and correct phase, is an effective method to improve the resolution of seismic data. The conventional inverse Q method is usually based on wavefield continuation, which is unstable or under-compensation. Based on the forward Q equation in wavefield continuation, this work proposes a new attenuation compensation method, which is stable and accurate, taking the advantage of the inverse theory and regularization strategy to obtain compensated seismic data eventually. It is also computationally efficient because only effective frequency components are calculated. Tests on synthetic and real data approve that the proposed method is effective.

关 键 词：反Q滤波 反演 正则化 衰减补偿 

分 类 号：P631[天文地球—地质矿产勘探]