稳定的反Q滤波统一算法及其在地震资料高分辨率处理中的应用  

A unified algorithm of stable inverse Qfiltering and its application to high-resolution processing of seismic data

作　　者：余连勇 胡光义 赵岩[2,3] 范廷恩 刘洋[2,3] 

机构地区：[1]中海油研究总院 [2]中国石油大学(北京)油气资源与探测国家重点实验室 [3]中国石油大学(北京)CNPC物探重点实验室

出　　处：《中国海上油气》2014年第4期29-33,共5页China Offshore Oil and Gas

基　　金："十二五"国家科技重大专项"大型油气田及煤层气开发"课题"海上开发地震关键技术及应用研究(编号:2011ZX05024-001)"部分研究成果

摘　　要：稳定的反Q滤波被引入到叠前和VSP记录的衰减补偿中得到了较好的效果,但是前人给出的算法比较复杂。基于地下介质的水平层状假设,根据叠前地震记录和VSP记录观测系统的特点,给出了叠前地震记录和VSP记录(零偏和非零偏)反Q滤波的统一算法和公式,实现了对叠前地震记录和VSP记录的高分辨率处理。模型试算和实际地震资料的应用结果表明,本文方法可显著提高叠后、叠前及VSP地震记录的分辨率。Introducing stable inverse Q filtering in-to the attenuation compensation for pre-stack and VSP seismic records is quite good in effects, but the existing algorithms are relatively complex. Based on the assumption of horizontally-layered media in subsurface, a unified algorithm of stable inverse Q filtering and its formulae were developed for pre-stack and VSP （zero-offset and offset） re- cords, by considering the features of pre-stack and VSP observation systems, and it was achieved to conduct high-resolution processing of pre-stack and VSP data. The model calculations and the applica-tion results of theoretical seismograms and actual seismic data have shown that this method can sig-nificantly improve the resolution of post-stack, pre-stack and VSP seismograms.

关 键 词：稳定的反Q滤波 统一算法 模型试算 高分辨率处理 

分 类 号：P631.443[天文地球—地质矿产勘探]