相关系数在地震振幅恢复中的应用
|
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 exploration inversion methods based on the amplitude of seis mic waves have been applied very widely. In seismic inter pretation, different processing personal have always differ ent, 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 re ducing the reliability of succeeding reservoir research, an i-dea of examining amplitude processing effectiveness by syn thetic seismogram was proposed and the correlation coeffi cient of synthetic seismogram with well-vicinal seismic trace might be used for supervising and controlling the amplitude processing effectiveness. The results indicated that the pro cessed sections were obviously improved with a clear relation between relative high amplitudes and relative low ampli tudes, active waveshapes and obviously heightened correla tion 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 im pedance relation being more conformable to reality with dis tinct arrangement and clear details.
The geological information contained by the amplitude of seismic waves is very abundant and the exploration inversion methods based on the amplitude of seis mic waves have been applied very widely. In seismic inter pretation, different processing personal have always differ ent, 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 re ducing the reliability of succeeding reservoir research, an i-dea of examining amplitude processing effectiveness by syn thetic seismogram was proposed and the correlation coeffi cient of synthetic seismogram with well-vicinal seismic trace might be used for supervising and controlling the amplitude processing effectiveness. The results indicated that the pro cessed sections were obviously improved with a clear relation between relative high amplitudes and relative low ampli tudes, active waveshapes and obviously heightened correla tion 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 im pedance relation being more conformable to reality with dis tinct arrangement and clear details.
引文
1 程乾生.信号数字处理的数学原理.北京:石油工业出版社,1982
2 贾明辰,牛志杰,覃天等.高保真的地震资料处理方法.新疆石油地质,1999;20(增刊)
3 黄德济,贺振华,包吉山等.地震勘探资料数字处理.北京:地质出版社,1989
4 谢里夫RE ,吉尔达特LP著,初英、李承楚、王宏伟等译.勘探地震学.北京:石油工业出版社,1997
5 王宝祥等.信号与系统.哈尔滨:哈尔滨工业大学出版社,1992
6 张应波,吴志华,张素吟等.反射波振幅异常的提取及平面显示.石油物探,1998;27(2)
7 凌云.大地吸收衰减分析.石油地球物理勘探,2001;36(1)
8 SheriffRE .Factorsaffectingseismicamplitudes.Geophysics,1975;23(1)
2 贾明辰,牛志杰,覃天等.高保真的地震资料处理方法.新疆石油地质,1999;20(增刊)
3 黄德济,贺振华,包吉山等.地震勘探资料数字处理.北京:地质出版社,1989
4 谢里夫RE ,吉尔达特LP著,初英、李承楚、王宏伟等译.勘探地震学.北京:石油工业出版社,1997
5 王宝祥等.信号与系统.哈尔滨:哈尔滨工业大学出版社,1992
6 张应波,吴志华,张素吟等.反射波振幅异常的提取及平面显示.石油物探,1998;27(2)
7 凌云.大地吸收衰减分析.石油地球物理勘探,2001;36(1)
8 SheriffRE .Factorsaffectingseismicamplitudes.Geophysics,1975;23(1)
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心