转换波反射系数近似公式的比较及分析
|
摘要
多分量地震资料解释的首要问题就是多分量的标定和对比,其中最关键的是转换波反射系数的求取及子波的选取,然而Zoeppritz方程在数学表达上极其复杂,在物理意义上也不直观,因此很难得到直接的应用。为此,在详细介绍五种近似公式的基础上,利用六种模型分析了随入射角的变化各公式的适应性,最后得出结论,Aki和Richard的近似公式适应性普遍比较好。
The most important problem in interpreting multi-wave seismic data is multi-wave calibration and contrast,in which the extraction of the reflection coefficient and the selection of the wavelet are most critical.However,Zoeppritz equation is extremely complex and does not have intuitive physical meaning,and hence it is difficult for this equation to receive a direct application.This paper therefore makes a detailed description of five approximate formulae,based on analyzing the suitability of six models with the variation of the angle of incidence.It is concluded that the approximate formula Aki&Richard generally has better adaptability.
The most important problem in interpreting multi-wave seismic data is multi-wave calibration and contrast,in which the extraction of the reflection coefficient and the selection of the wavelet are most critical.However,Zoeppritz equation is extremely complex and does not have intuitive physical meaning,and hence it is difficult for this equation to receive a direct application.This paper therefore makes a detailed description of five approximate formulae,based on analyzing the suitability of six models with the variation of the angle of incidence.It is concluded that the approximate formula Aki&Richard generally has better adaptability.
引文
[1]石玉梅,姚逢昌,曹宏.多波多分量天然气勘探技术的进展[J].勘探地球物理进展,2003,26(3):172-177.
[2]徐丽萍,杨勤勇.多波多分量地震技术发展与展望[J].勘探地球物理进展,2002,25(3):47-52.
[3]陆基孟.地震勘探原理[M].东营:石油大学出版社,1993.
[4]孙鹏远,孙建国,卢秀丽.P-SV波AVO分[J].石油地球物理勘探,2003,38(2):131-135.
[5]孙鹏远,孙建国,卢秀丽.P-SV波AVO方法研究进展[J].地球物理学进展,2003,18(4):602-607.
[6]Aki K I,Riehards P G.Quantitative seismology[M].San Francis-co:W H Freeman and Co,1980:144-154.
[7]周竹生.P-SV和SH波的AVO分析[J].石油地球物理勘探,1993,28(4):430-438.
[8]郑晓东.AVO理论和方法的一些进展[J].石油地球物理勘探,1993,27(3):305-317.
[9]甘永忠.用P-SV波叠加剖面合成横波层速度剖面[J].石油地球物理勘探,1995,30(1):56-61.
[10]Alejandro A V,Reinaldo J M.Stratigraphic inversion of poststackPS converted waves date[J].Expand Abstracts of 70th Annual In-ternat SEG Mtg,2000:150-153.
[11]Ostrander W J.Plane-wave reflection coefficients for gas sands atnonnormal angles of incidence[J].Geophysics,1984,49:1637-1648.
[12]Goodway B,Chen T,Downten J.Improved AVO fluid detection andlithology discrimination using Lame petrophysical parameters[J].Expanded Abstracts of 67th Annual Internet SEG Mtg,1997:183-186.
[2]徐丽萍,杨勤勇.多波多分量地震技术发展与展望[J].勘探地球物理进展,2002,25(3):47-52.
[3]陆基孟.地震勘探原理[M].东营:石油大学出版社,1993.
[4]孙鹏远,孙建国,卢秀丽.P-SV波AVO分[J].石油地球物理勘探,2003,38(2):131-135.
[5]孙鹏远,孙建国,卢秀丽.P-SV波AVO方法研究进展[J].地球物理学进展,2003,18(4):602-607.
[6]Aki K I,Riehards P G.Quantitative seismology[M].San Francis-co:W H Freeman and Co,1980:144-154.
[7]周竹生.P-SV和SH波的AVO分析[J].石油地球物理勘探,1993,28(4):430-438.
[8]郑晓东.AVO理论和方法的一些进展[J].石油地球物理勘探,1993,27(3):305-317.
[9]甘永忠.用P-SV波叠加剖面合成横波层速度剖面[J].石油地球物理勘探,1995,30(1):56-61.
[10]Alejandro A V,Reinaldo J M.Stratigraphic inversion of poststackPS converted waves date[J].Expand Abstracts of 70th Annual In-ternat SEG Mtg,2000:150-153.
[11]Ostrander W J.Plane-wave reflection coefficients for gas sands atnonnormal angles of incidence[J].Geophysics,1984,49:1637-1648.
[12]Goodway B,Chen T,Downten J.Improved AVO fluid detection andlithology discrimination using Lame petrophysical parameters[J].Expanded Abstracts of 67th Annual Internet SEG Mtg,1997:183-186.
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