岩石各向异性和接收器阵列的空间分布对地震信号的影响
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摘要
由于岩石各向异性,相速度的大小和方向与能量速度的大小和方向不同。在均匀各向异性介质中,弹性波以能量角方向向前传播。基于已报道的岩石各向异向性参数,文章计算了岩石各向异性对地震勘探信号的时-深转换关系的影响。计算结果表明:如果忽略了岩石的各向异性,震源-接收器阵列的空间排列和方位不同,造成的时-深转换关系产生的误差的空间分布也就不同。
Due to the presence of rock anisotropy,the direction and magnitude of the phase velocity differ from those of the energy velocity.The elastic-wave is propagated in the energy angle direction in homogenous anisotropy media.Based on the rock anisotropy parameters reported,this paper calculates the effect of rock anisotropy on the time-depth conversion relation of seismic data. The calculated results show that if ignoring the rock anisotropy,the space distribution of the created time-depth conversion error is related to the space arrange and orientation of the source-receiver array.
Due to the presence of rock anisotropy,the direction and magnitude of the phase velocity differ from those of the energy velocity.The elastic-wave is propagated in the energy angle direction in homogenous anisotropy media.Based on the rock anisotropy parameters reported,this paper calculates the effect of rock anisotropy on the time-depth conversion relation of seismic data. The calculated results show that if ignoring the rock anisotropy,the space distribution of the created time-depth conversion error is related to the space arrange and orientation of the source-receiver array.
引文
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[6]法林,岳伏生,阙征,等.岩石的各向异性对地震勘探信号的影响[J].石油仪器,2007,21
[7]Lin Fa,John P.Castagna,Hefeng Dong.An accurately fastalgorithm of calculating reflection/transmission coefficients[J].Science in China Series G:Physics,Mechanics&As-tronomy,2008,51
[8]Lin Fa,John P.Castagna,Ray L.Brown,et al.Effects ofanisotropy on time-depth relation in transversely isotropicmedium with a vertical axis of symmetry[J].Chinese Sci-ence Bulletin,2010,55
[9]Zhijing Wang.Seismic anisotropy in sedimentary rocks,part2:Laboratory data[J].Geophysics,2002,67
[10]J.M.Carcione.Wave Fields in Real Media:Wave Propa-gation in Anisotropic,Anelastic and Porous Media(Perga-mon,An Imprint of Elsevier Science,Amsterdam,2001)
[11]I.Tsvankin.Seismic Signatures and analysis of reflectiondata in anisotropic media,2005
[12]J.Wright.The effects of transverse isotropy on reflectionamplitude versus offset[J].Geophysics,1987,52
[13]N.C.Banik.An effective anisotropy parameter in trans-versely isotropic media[J].1987,52
[14]K.Y.Kim,K.H.Wrolstad,F.Aminzadeh.Effects oftransverse isotropy on P-wave AVO for gas sands[J].Geophysics,1993,58
[2]P.F.Daley,F.Hron.Reflection and transmission coeffi-cients for transversely isotropic media[J].Bulletin of theSeismological Society of America,1977,67
[3]S.L.Rokhlin,T.K.Boland,L.Adler.Reflection and re-fraction of elastic waves on plane interface between two gen-erally anisotropic media[J].J.Acoust.Soc.Am.,1986,79
[4]B.Mandal.Reflection and transmission properties of elasticwaves on a plane interface for general anisotropic media[J].J.Acoust.Soc.Am.,1991,90
[5]Lin Fa,Ray.L.Brown,John.P.Castagna.Anomalouspost-critical refraction behavior for certain transverselyisotropic media[J].J.Acoust.Soc.Am.,2006 120
[6]法林,岳伏生,阙征,等.岩石的各向异性对地震勘探信号的影响[J].石油仪器,2007,21
[7]Lin Fa,John P.Castagna,Hefeng Dong.An accurately fastalgorithm of calculating reflection/transmission coefficients[J].Science in China Series G:Physics,Mechanics&As-tronomy,2008,51
[8]Lin Fa,John P.Castagna,Ray L.Brown,et al.Effects ofanisotropy on time-depth relation in transversely isotropicmedium with a vertical axis of symmetry[J].Chinese Sci-ence Bulletin,2010,55
[9]Zhijing Wang.Seismic anisotropy in sedimentary rocks,part2:Laboratory data[J].Geophysics,2002,67
[10]J.M.Carcione.Wave Fields in Real Media:Wave Propa-gation in Anisotropic,Anelastic and Porous Media(Perga-mon,An Imprint of Elsevier Science,Amsterdam,2001)
[11]I.Tsvankin.Seismic Signatures and analysis of reflectiondata in anisotropic media,2005
[12]J.Wright.The effects of transverse isotropy on reflectionamplitude versus offset[J].Geophysics,1987,52
[13]N.C.Banik.An effective anisotropy parameter in trans-versely isotropic media[J].1987,52
[14]K.Y.Kim,K.H.Wrolstad,F.Aminzadeh.Effects oftransverse isotropy on P-wave AVO for gas sands[J].Geophysics,1993,58
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