基于LSQR算法的谱反演方法研究
|
摘要
阐述了谱反演原理,给出了谱反演流程。通过单道模型、楔形模型和Marmousi模型的应用分析,验证了谱反演从地震记录中去除地震子波影响进而得到反射系数序列的效果,揭示了谱反演补偿频谱的过程。谱反演能够分辨出小于调谐厚度的薄层,提高了地震勘探的分辨率;谱反演具有恢复复杂地质模型的能力,适用于复杂、隐蔽油气藏的勘探。
The basic principle of spectral inversion was elaborated and the realization workflow was given.By the application analysis of spectral inversion on single-trace model,wedge model and Mamousi model,we verified the effect of removing the impact of seismic wavelet from seismic record and obtaining reflection coefficient sequence,and revealed the compensation of frequency spectrum.Spectral inversion can identify the layer thinner than tuning thickness and improve the resolution of seismic exploration.In addition,spectral inversion can invert complex geologic model and is suitable to prospect the subtle reservoirs.
The basic principle of spectral inversion was elaborated and the realization workflow was given.By the application analysis of spectral inversion on single-trace model,wedge model and Mamousi model,we verified the effect of removing the impact of seismic wavelet from seismic record and obtaining reflection coefficient sequence,and revealed the compensation of frequency spectrum.Spectral inversion can identify the layer thinner than tuning thickness and improve the resolution of seismic exploration.In addition,spectral inversion can invert complex geologic model and is suitable to prospect the subtle reservoirs.
引文
[1]Puryear C I,Castagna J P.Layer-thickness determi-nation and stratigraphic interpretation using spectral inversion:theory and application[J].Geophysics,2008,73(2):37-48
[2]Chopra S,Castagna J P,Xu Y.Thin-bed reflectivity inversion and some applications[J].First Break,2009,27(5):17-24
[3]Chopra S,Castagna J P,Xu Y.Relative acoustic im-pedance application for thin-bed reflectivity inversion[J].Expanded Abstracts of79 th Annual Internat SEG Mtg,2009,3554-3558
[4]Chopra S,Castagna J P,Xu Y.Thin-bed reflectivity inversion and seismic interpretation[J].Expanded Abstracts of77 th Annual Internat SEG Mtg,2007,1923-1927
[5]Chopra S,Castagna J P,Portniaguine O.Seismic res-olution and thin-bed reflectivity inversion[J].CSEG Recorder,2006,31(1):19-25
[6]Chopra S,Castagna J P,Portniaguine O.Thin-bed reflectivity inversion[J].Expanded Abstracts of76 th Annual Internat SEG Mtg,2006,2057-2061
[7]Portniaguine O,Castagna J P.Spectral inversion:lessons from modeling and Boonesville case study[J].Expanded Abstracts of75 th Annual InternatSEG Mtg,2005,1638-1641
[8]Portniaguine O,Castagna J P.Inverse spectral de-composition[J].Expanded Abstracts of74 th Annual Internat SEG Mtg,2004,1786-1789
[9]Yuan S Y,Wang S X.A fast hybrid algorithm for spectral inversion[J].Expanded Abstracts of79 th Annual Internat SEG Mtg,2009,2442-2446
[10]Yuan S Y,Wang S X,Xu Y C,et al.Ill-posed analy-sis for spectral inversion[J].Expanded Abstracts of 79 th Annual Internat SEG Mtg,2009,2447-2451
[11]Castano K P.Optimizing thin-layer mapping through spectral inversion:performance of genetic algorithms and simulated annealing[J].Expanded Abstracts of80 th Annual Internat SEG Mtg,2010,1610-1614
[12]Kallweit R S,Wood L C.The limits of resolution of zero-phase wavelets[J].Geophysics,1982,47(7):1035-1046
[13]Widess M B.How thin is a thin bed?[J].Geophys-ics,1973,38(6):1176-1180
[14]Paige C C,Saunders M A.LSQR:an algorithm for sparse linear equations and sparse least squares[J].ACM Transactions on Mathematical Software,1982,8(1):43-71
[15]李振春,张军华.地震数据处理方法[M].东营:中国石油大学出版社,2004:18-36 Li Z C,Zhang J H.Seismic data processing method[M].Dongying:China University of Petroleum Press,2004:18-36
[2]Chopra S,Castagna J P,Xu Y.Thin-bed reflectivity inversion and some applications[J].First Break,2009,27(5):17-24
[3]Chopra S,Castagna J P,Xu Y.Relative acoustic im-pedance application for thin-bed reflectivity inversion[J].Expanded Abstracts of79 th Annual Internat SEG Mtg,2009,3554-3558
[4]Chopra S,Castagna J P,Xu Y.Thin-bed reflectivity inversion and seismic interpretation[J].Expanded Abstracts of77 th Annual Internat SEG Mtg,2007,1923-1927
[5]Chopra S,Castagna J P,Portniaguine O.Seismic res-olution and thin-bed reflectivity inversion[J].CSEG Recorder,2006,31(1):19-25
[6]Chopra S,Castagna J P,Portniaguine O.Thin-bed reflectivity inversion[J].Expanded Abstracts of76 th Annual Internat SEG Mtg,2006,2057-2061
[7]Portniaguine O,Castagna J P.Spectral inversion:lessons from modeling and Boonesville case study[J].Expanded Abstracts of75 th Annual InternatSEG Mtg,2005,1638-1641
[8]Portniaguine O,Castagna J P.Inverse spectral de-composition[J].Expanded Abstracts of74 th Annual Internat SEG Mtg,2004,1786-1789
[9]Yuan S Y,Wang S X.A fast hybrid algorithm for spectral inversion[J].Expanded Abstracts of79 th Annual Internat SEG Mtg,2009,2442-2446
[10]Yuan S Y,Wang S X,Xu Y C,et al.Ill-posed analy-sis for spectral inversion[J].Expanded Abstracts of 79 th Annual Internat SEG Mtg,2009,2447-2451
[11]Castano K P.Optimizing thin-layer mapping through spectral inversion:performance of genetic algorithms and simulated annealing[J].Expanded Abstracts of80 th Annual Internat SEG Mtg,2010,1610-1614
[12]Kallweit R S,Wood L C.The limits of resolution of zero-phase wavelets[J].Geophysics,1982,47(7):1035-1046
[13]Widess M B.How thin is a thin bed?[J].Geophys-ics,1973,38(6):1176-1180
[14]Paige C C,Saunders M A.LSQR:an algorithm for sparse linear equations and sparse least squares[J].ACM Transactions on Mathematical Software,1982,8(1):43-71
[15]李振春,张军华.地震数据处理方法[M].东营:中国石油大学出版社,2004:18-36 Li Z C,Zhang J H.Seismic data processing method[M].Dongying:China University of Petroleum Press,2004:18-36
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