地震数据谱反演压缩感知算法实现及应用  

Implementation and application of compressed sensing algorithm for seismic spectrum inversion

作　　者：夏红敏[1] 刘兰锋[1] 张显辉 陈双全[2,3] XIA Hongmin;LIU Lanfeng;ZHANG Xianhui;CHEN Shuangquan(SINOPEC Petroleum Exploration and Production Research Institute,Beijing 100083,China;State Key Laboratory of Petroleum Resources and Prospecting,China University of Petroleum,Beijing 102249,China;CNPC Key Laboratory of Geophysical Prospecting,China University of Petroleum,Beijing 102249,China)

机构地区：[1]中国石化石油勘探开发研究院,北京100083 [2]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 [3]中国石油大学(北京)CNPC物探重点实验室,北京102249

出　　处：《石油地球物理勘探》2021年第2期295-301,I0010,共8页Oil Geophysical Prospecting

基　　金：国家科技重大专项“鄂北深层岩溶储层地震预测技术”(2017ZX05005-004-009);中石化科研项目“薄储层提高分辨率处理与流体识别技术研究”(PE19008-2)、“碎屑岩薄互层地震高分辨率反演技术”(PE18075-5)联合资助。

摘　　要：地震数据谱反演是将地层反射系数分解为奇分量和偶分量,再利用部分谱信息进行反演的方法。基于压缩感知算法的谱反演,通过梯度投影稀疏重构实现地震谱反演,能够很好地实现谱反演目标函数求解。同时,利用地震数据的二次谱估算地震子波谱用于谱反演。合成数据和实际数据试算结果表明,联合地震数据二次谱算法和基于压缩感知算法的谱反演方法较好地解决了实际数据谱反演中的稳定性问题,反演结果地震信噪比高、横向连续性好,在实际数据处理中参数影响因素少,具有较强的适应性和实用性。Seismic spectrum inversion is a method of decomposing the reflection coefficient into odd and even components,and then using part of spectrum information for inversion.In this study,a spectral inversion method based on compressed sensing algorithm is developed in conjunction with the quadratic spectral calculation method of seismic data.Seismic spectrum inversion is carried out by the compressed sensing algorithm that implements gradient projection and sparse reconstruction,and better improves the stability of conventional spectrum inversion algorithm.At the same time,the second spectrum of seismic data is used to estimate the seismic wavelet spectrum in the inversion,which well realizes the application of spectrum inversion of seismic data.Application to synthetic and raw data has proved that the spectrum inversion method based on compressed sensing algorithm is very adaptable and practicable.In raw data processing,this method is less influenced,and its inversion result has high signal-to-noise ratio and good lateral continuity.

关 键 词：谱反演 压缩感知 稀疏重构 地震子波 高分辨率 

分 类 号：P631[天文地球—地质矿产勘探]