相关系数在地震振幅恢复中的应用  

APPLICATION OF CORRELATION COEFFI CIENT IN SEISMIC AMPLITUDE RECOVERY

作　　者：刘泽斌[1] 张立[1] 曾武[2] 龚立[1] 张贤松[1] 

机构地区：[1]四川石油管理局石油地质调查处 [2]中国石油西南油气田分公司川中油气矿

出　　处：《天然气工业》2004年第9期48-50,i022,共4页Natural Gas Industry

摘　　要：地震波的振幅包含的地质信息特别丰富 ,基于地震波振幅的各种勘探反演方法应用非常广泛。在生产中 ,由于受各种客观因素的影响 ,不同的解释人员往往对同一结果有不同甚至是完全相反的认识。文章分析了现今的资料处理常常不能有效恢复振幅相对关系 ,没有监控手段 ,使得后续的储层研究可靠性降低的问题 ,提出了用合成记录来检验振幅处理效果的思路 ,并用合成记录与井旁地震道的相关系数来监控处理效果。结果表明 ,处理剖面得到了明显改善 ,振幅相对强弱关系清楚、波形活跃、相关系数明显提高、不同深度平均提高 0 .3左右 ;应用于储层研究的反演剖面效果改善明显 ,波阻抗关系更符合实际、层次分明、细节清楚。The geological information contained by the amplitude of seismic waves is very abundant and the ex ploration inversion methods based on the amplitude of seismic waves have been applied very widely. In seismic interpretation, different processing personal have always different, even opposite, views on the same result because of the influence of various objective factors. Through analyzing the problems those the relative connections of amplitude couldn't be effectively recovered by existent data processing methods and there were no supervision and control means, thus reducing the reliability of succeeding reservoir research, an idea of examining amplitude processing effectiveness by synthetic seismogram was proposed and the correlation coefficient of synthetic seismogram with well-vicinal seismic trace might be used for supervising and controlling the amplitude processing effectiveness. The results indicated that the processed sections were obviously improved with a clear relation between relative high amplitudes and relative low amplitudes, active waveshapes and obviously heightened correlation coefficient (being heightened about 0. 3 on an average at different depths); and the quality of the inversed sections used for reservoir research was greatly raised, the wave impedance relation being more conformable to reality with distinct arrangement and clear details.

关 键 词：合成记录 振幅恢复 地震波 地震道 剖面 反演方法 储层 文章分析 实际 层次 

分 类 号：P631.4[天文地球—地质矿产勘探]