几种提取品质因子方法的对比分析
|
摘要
地层的品质因子对衡量地震波传播过程中的能量衰减具有重要意义。实际上对品质因子的反演困难且存在不确定性。基于介质中的地震波传播理论,从方法原理、模型试算和实际资料验证等方面,对比分析了目前常用的5种提取品质因子的方法,即频谱比法、中心频率偏移法、上升时间法、振幅衰减法和解析信号法,认为:频率域方法更稳定,多种方法应联合使用等。
Quality factor is of great significance in quantifying the absorption of seismic energy in wave propagation because of the visco-elasticity of subsurface media.The quality factor is often non-unique when it is inversed from in-situ data.In this paper,based on the fundamental theory of wave propagation in media,we investigated 5 widely used methods of Q-factor inversion.They are spectral ratio method,centroid-frequency shift method,amplitude decay method,rise-time method,and analytical signal method.It is concluded that frequency-domain methods are more stable,and different methods should be used jointly.
Quality factor is of great significance in quantifying the absorption of seismic energy in wave propagation because of the visco-elasticity of subsurface media.The quality factor is often non-unique when it is inversed from in-situ data.In this paper,based on the fundamental theory of wave propagation in media,we investigated 5 widely used methods of Q-factor inversion.They are spectral ratio method,centroid-frequency shift method,amplitude decay method,rise-time method,and analytical signal method.It is concluded that frequency-domain methods are more stable,and different methods should be used jointly.
引文
1Tonn R.The determination of the seismic quality fac-tor Qfrom VSP data:A comparison of different com-putational methods[J].Geophysical Prospecting,1991,39(1):1～27
2Tonn R.七种计算Q值方法的比较[J].郑需要译.世界地震译丛,1992,4:77～83
3白桦,李鲲鹏.基于时谱分析的地层吸收补偿[J].石油地球物理勘探,1999,34(6):642～648
4凌云,高军,张汝杰.基于一维弹性阻尼波动理论的沙丘Q吸收补偿[J].石油地球物理勘探,1997,32(6):795～803
5Quan Y L,Jerry H M.Seismic attenuation tomography using the frequency shift method[J].Geophysics,1997,62(3):895～905
6Zhang C J,Ulrych T J.Estimation of quality factors from CMP records[J].Geophysics,2002,67(5):1542～1547
7朱定,闵小刚,顾汉明.基于主频偏移反演地层的吸收系数[J].勘探地球物理进展,2006,29(1):30～33
8王辉,常旭,刘伊克,等.时间域相邻道地震波衰减成像研究[J].地球物理学报,2001,44(3):396～403
9Kjartansson E.Constant Q-wave propagation and at-tenuation[J].Journal of Geophysical Research,1979,84:4737～4748
10孙成禹.地震波理论与方法[M].山东东营:中国石油大学出版社,2007.124～128
11Haase A B,Stewart R R.Estimating seismic attention(Q)by an analytical signal method[J].Expanded Ab-stract of75thAnnual International SEG Meeting,2005,2617～2620
12Taner M T,Koehler F,Sheriff R E.Complex seismic trace analysis[J].Geophysics,1979,44(6):1041～1063
13Engelhard L.Determination of seismic-wave attenua-tion by complex trace analysis[J].Geophysical Journal International,1996,125:608～622
14Barnes A E.The calculation of instantaneous frequency and instantaneous bandwidth[J].Geophysics,1992,57(11):1520～1524
15钱绍瑚,高建华,谷永兴,等.地层吸收衰减模型的制作及补偿方法的研究[J].石油地球物理勘探,1998,33(增刊1):18～24
16李庆忠.走向精确勘探的道路[M].北京:石油工业出版社,1994.35～39
2Tonn R.七种计算Q值方法的比较[J].郑需要译.世界地震译丛,1992,4:77～83
3白桦,李鲲鹏.基于时谱分析的地层吸收补偿[J].石油地球物理勘探,1999,34(6):642～648
4凌云,高军,张汝杰.基于一维弹性阻尼波动理论的沙丘Q吸收补偿[J].石油地球物理勘探,1997,32(6):795～803
5Quan Y L,Jerry H M.Seismic attenuation tomography using the frequency shift method[J].Geophysics,1997,62(3):895～905
6Zhang C J,Ulrych T J.Estimation of quality factors from CMP records[J].Geophysics,2002,67(5):1542～1547
7朱定,闵小刚,顾汉明.基于主频偏移反演地层的吸收系数[J].勘探地球物理进展,2006,29(1):30～33
8王辉,常旭,刘伊克,等.时间域相邻道地震波衰减成像研究[J].地球物理学报,2001,44(3):396～403
9Kjartansson E.Constant Q-wave propagation and at-tenuation[J].Journal of Geophysical Research,1979,84:4737～4748
10孙成禹.地震波理论与方法[M].山东东营:中国石油大学出版社,2007.124～128
11Haase A B,Stewart R R.Estimating seismic attention(Q)by an analytical signal method[J].Expanded Ab-stract of75thAnnual International SEG Meeting,2005,2617～2620
12Taner M T,Koehler F,Sheriff R E.Complex seismic trace analysis[J].Geophysics,1979,44(6):1041～1063
13Engelhard L.Determination of seismic-wave attenua-tion by complex trace analysis[J].Geophysical Journal International,1996,125:608～622
14Barnes A E.The calculation of instantaneous frequency and instantaneous bandwidth[J].Geophysics,1992,57(11):1520～1524
15钱绍瑚,高建华,谷永兴,等.地层吸收衰减模型的制作及补偿方法的研究[J].石油地球物理勘探,1998,33(增刊1):18～24
16李庆忠.走向精确勘探的道路[M].北京:石油工业出版社,1994.35～39
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